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A blacksmith is a
metalsmith A metalsmith or simply smith is a craftsperson fashioning useful items (for example, tools, kitchenware, tableware, jewelry, armor and weapons) out of various metals. Smithing is one of the oldest list of metalworking occupations, metalworking o ...
who creates objects primarily from
wrought iron Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%), or 0.25 for low carbon "mild" steel. Wrought iron is manufactured by heating and melting high carbon cast iron in an ...
or
steel Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength a ...
, but sometimes from other metals, by
forging Forging is a manufacturing process involving the shaping of metal using localized compression (physics), compressive forces. The blows are delivered with a hammer (often a power hammer) or a die (manufacturing), die. Forging is often classif ...
the
metal A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated wit ...
, using tools to hammer, bend, and cut (cf.
tinsmith A tinsmith is a historical term for a skilled craftsperson who makes and repairs things made of tin or other light metals. The profession was also known as a tinner, tinker, tinman, or tinplate worker; whitesmith may also refer to this profe ...
). Blacksmiths produce objects such as gates, grilles, railings, light fixtures, furniture, sculpture, tools, agricultural implements, decorative and religious items, cooking utensils, and weapons. There was a historical distinction between the heavy work of the blacksmith and the more delicate operations of a whitesmith, who usually worked in
gold Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...
,
silver Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. ...
,
pewter Pewter () is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. In the past, it was an alloy of tin and lead, but most modern pewter, in order to prevent lead poi ...
, or the finishing steps of fine steel. The place where a blacksmith works is variously called a smithy, a forge, or a blacksmith's shop. While there are many professions who work with metal, such as
farrier A farrier is a specialist in equine hoof care, including the trimming and balancing of horses' hooves and the placing of shoes on their hooves, if necessary. A farrier combines some blacksmith's skills (fabricating, adapting, and adju ...
s,
wheelwright A wheelwright is a Artisan, craftsman who builds or repairs wooden wheels. The word is the combination of "wheel" and the word "wright" (which comes from the Old English word "''wryhta''", meaning a worker - as also in shipbuilding, shipwright ...
s, and
armorer Historically, an armourer is a person who makes personal armour, especially plate armour. Historically armourers were often men, but women could also undertake the occupation: for example Alice la Haubergere worked as an armourer in Cheapside i ...
s, in former times the blacksmith had a general knowledge of how to make and repair many things, from the most complex of weapons and armor to simple things like nails or lengths of chain.


Etymology

The "black" in "blacksmith" refers to the black
firescale Firestain is a layer of oxides that is visible on the surface of objects made of metal alloys containing copper when the object is heated, as by a jeweler heating a ring to apply solder during a repair. On copper-containing alloys of gold or of si ...
, a layer of oxides that forms on the surface of the metal during heating. The origin of smith is the
Old English Old English ( or , or ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the Early Middle Ages. It developed from the languages brought to Great Britain by Anglo-S ...
word meaning "blacksmith", originating from the
Proto-Germanic Proto-Germanic (abbreviated PGmc; also called Common Germanic) is the linguistic reconstruction, reconstructed proto-language of the Germanic languages, Germanic branch of the Indo-European languages. Proto-Germanic eventually developed from ...
''*smiþaz'' meaning "skilled worker".


Smithing process

Blacksmiths work by heating pieces of wrought iron or steel until the metal becomes soft enough for shaping with hand tools, such as a hammer, an
anvil An anvil is a metalworking tool consisting of a large block of metal (usually Forging, forged or Steel casting, cast steel), with a flattened top surface, upon which another object is struck (or "worked"). Anvils are massive because the hi ...
and a
chisel A chisel is a hand tool with a characteristic Wedge, wedge-shaped cutting edge on the end of its blade. A chisel is useful for carving or cutting a hard material such as woodworking, wood, lapidary, stone, or metalworking, metal. Using a chi ...
. Heating generally takes place in a
forge A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the smith to heat a piece of metal to a temperature at which it becomes easier to shape by forging, or to the ...
fueled by propane, natural gas, coal, charcoal, coke, or oil. Some modern blacksmiths may also employ an
oxyacetylene Principle of burn cutting Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the United States) and oxy-fuel cutting are processes that use fuel gases (or liquid fuels such as gasoline or petrol, diesel, bio ...
or similar
blowtorch A blowtorch, also referred to as a blowlamp, is an ambient air fuel-burning tool used for applying flame and heat to various applications, usually in metalworking, but occasionally for foods like crème brûlée. Description Early blowtorches ...
for more localized heating.
Induction heating Induction heating is the process of heating electrically conductive materials, namely metals or semi-conductors, by electromagnetic induction, through heat transfer passing through an inductor that creates an electromagnetic field within the coi ...
methods are gaining popularity among modern blacksmiths. Color is important for indicating the temperature and workability of the metal. As iron heats to higher temperatures, it first glows red, then orange, yellow, and finally white. The ideal heat for most forging is the bright yellow-orange color that indicates ''forging heat''. Because they must be able to see the glowing color of the metal, some blacksmiths work in dim, low-light conditions, but most work in well-lit conditions. The key is to have consistent lighting, but not too bright. Direct sunlight obscures the colors. The techniques of
smithing A metalsmith or simply smith is a craftsperson fashioning useful items (for example, tools, kitchenware, tableware, jewelry, armor and weapons) out of various metals. Smithing is one of the oldest metalworking occupations. Shaping metal with a ...
can be roughly divided into forging (sometimes called "sculpting"), welding, heat-treating, and finishing.


Forging

Forging Forging is a manufacturing process involving the shaping of metal using localized compression (physics), compressive forces. The blows are delivered with a hammer (often a power hammer) or a die (manufacturing), die. Forging is often classif ...
—the process smiths use to shape metal by hammering—differs from machining in that forging does not remove material. Instead, the smith hammers the iron into shape. Even punching and cutting operations (except when trimming waste) by smiths usually re-arrange metal around the hole, rather than drilling it out as
swarf Swarf, also known as chips or by other process-specific names (such as turnings, filings, or shavings), are pieces of metal, wood, or plastic that are the debris or waste resulting from machining, woodworking, or similar subtractive (material-r ...
. Forging uses seven basic operations or techniques: * Drawing down * Shrinking (a type of upsetting) * Bending * Upsetting *
Swaging Swaging () is a forging process in which the dimensions of an item are altered using Die (manufacturing), dies into which the item is forced. Swaging is usually a cold working process, but also may be hot working, hot worked. The term swage ma ...
* Punching * Forge welding These operations generally require at least a hammer and
anvil An anvil is a metalworking tool consisting of a large block of metal (usually Forging, forged or Steel casting, cast steel), with a flattened top surface, upon which another object is struck (or "worked"). Anvils are massive because the hi ...
, but smiths also use other tools and techniques to accommodate odd-sized or repetitive jobs.


Drawing

Drawing lengthens the metal by reducing one or both of the other two dimensions. As the depth is reduced, or the width narrowed, the piece is lengthened or "drawn out." As an example of drawing, a smith making a chisel might flatten a square bar of steel, lengthening the metal, reducing its depth but keeping its width consistent. Drawing does not have to be uniform. A taper can result as in making a wedge or a woodworking chisel blade. If tapered in two dimensions, a point results. Drawing can be accomplished with a variety of tools and methods. Two typical methods using only hammer and anvil would be hammering on the anvil horn, and hammering on the anvil face using the cross peen of a hammer. Another method for drawing is to use a tool called a fuller, or the peen of the hammer, to hasten the drawing out of a thick piece of metal. (The technique is called fullering from the tool.) Fullering consists of hammering a series of indentations with corresponding ridges, perpendicular to the long section of the piece being drawn. The resulting effect looks somewhat like waves along the top of the piece. Then the smith turns the hammer over to use the flat face to hammer the tops of the ridges down level with the bottoms of the indentations. This forces the metal to grow in length (and width if left unchecked) much faster than just hammering with the flat face of the hammer.


Bending

Heating iron to a "forging heat" allows bending as if it were a soft,
ductile Ductility refers to the ability of a material to sustain significant plastic deformation before fracture. Plastic deformation is the permanent distortion of a material under applied stress, as opposed to elastic deformation, which is reversi ...
metal, like copper or silver. Bending can be done with the hammer over the horn or edge of the anvil or by inserting a bending fork into the
hardy hole An anvil is a metalworking tool consisting of a large block of metal (usually forged or cast steel), with a flattened top surface, upon which another object is struck (or "worked"). Anvils are massive because the higher their inertia, th ...
(the square hole in the top of the anvil), placing the work piece between the tines of the fork, and bending the material to the desired angle. Bends can be dressed and tightened, or widened, by hammering them over the appropriately shaped part of the anvil. Some metals are "hot short", meaning they lose their tensile strength when heated. They become like
Plasticine Plasticine is a putty-like modelling material made from calcium salts, petroleum jelly and aliphatic acids. Though originally a brand name for the British version of the product, it is now applied generically in English as a product category ...
: although they may still be manipulated by squeezing, an attempt to stretch them, even by bending or twisting, is likely to have them crack and break apart. This is a problem for some blade-making steels, which must be worked carefully to avoid developing hidden cracks that would cause failure in the future. Though rarely hand-worked,
titanium Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...
is notably hot short. Even such common smithing processes as decoratively twisting a bar are impossible with it.


Upsetting

Upsetting is the process of making metal thicker in one dimension through shortening in the other. One form is to heat the end of a rod and then hammer on it as one would drive a nail: the rod gets shorter, and the hot part widens. An alternative to hammering on the hot end is to place the hot end on the anvil and hammer on the cold end.


Punching

Punching may be done to create a decorative pattern, or to make a hole. For example, in preparation for making a hammerhead, a smith would punch a hole in a heavy bar or rod for the hammer handle. Punching is not limited to depressions and holes. It also includes cutting, slitting, and drifting—all done with a chisel.


Combining processes

The five basic forging processes are often combined to produce and refine the shapes necessary for finished products. For example, to fashion a cross-peen hammer head, a smith would start with a bar roughly the diameter of the hammer face: the handle hole would be punched and drifted (widened by inserting or passing a larger tool through it), the head would be cut (punched, but with a wedge), the peen would be drawn to a wedge, and the face would be dressed by upsetting. As with making a chisel, since it is lengthened by drawing it would also tend to spread in width. A smith would therefore frequently turn the chisel-to-be on its side and hammer it back down—upsetting it—to check the spread and keep the metal at the correct width. Or, if a smith needed to put a 90-degree bend in a bar and wanted a sharp corner on the outside of the bend, they would begin by hammering an unsupported end to make the curved bend. Then, to "fatten up" the outside radius of the bend, one or both arms of the bend would need to be pushed back to fill the outer radius of the curve. So they would hammer the ends of the stock down into the bend, 'upsetting' it at the point of the bend. They would then dress the bend by drawing the sides of the bend to keep the correct thickness. The hammering would continue—upsetting and then drawing—until the curve had been properly shaped. In the primary operation was the bend, but the drawing and upsetting are done to refine the shape.


Welding

Welding Welding is a fabrication (metal), fabrication process that joins materials, usually metals or thermoplastics, primarily by using high temperature to melting, melt the parts together and allow them to cool, causing Fusion welding, fusion. Co ...
is the joining of the same or similar kind of metal. A modern blacksmith has a range of options and tools to accomplish this. The basic types of welding commonly employed in a modern workshop include traditional
forge welding Forge welding (FOW), also called fire welding, is a solid-state welding process that joins two pieces of metal by heating them to a high temperature and then hammering them together. It may also consist of heating and forcing the metals together ...
as well as modern methods, including oxyacetylene and
arc welding Arc welding is a welding process that is used to join metal to metal by using electricity to create enough heat to melt metal, and the melted metals, when cool, result in a joining of the metals. It is a type of welding that uses a welding power ...
. In forge welding, the pieces to join are heated to what is generally referred to as ''welding heat''. For mild steel most smiths judge this temperature by color: the metal glows an intense yellow or white. At this temperature the steel is near molten. Any foreign material in the weld, such as the oxides or "scale" that typically form in the fire, can weaken it and cause it to fail. Thus the mating surfaces to be joined must be kept clean. To this end a smith makes sure the fire is a reducing fire: a fire where, at the heart, there is a great deal of heat and very little oxygen. The smith also carefully shapes mating faces so that as they come together foreign material squeezes out as the metal is joined. To clean the faces, protect them from oxidation, and provide a medium to carry foreign material out of the weld, the smith sometimes uses flux—typically powdered borax, silica sand, or both. The smith first cleans parts to be joined with a wire brush, then puts them in the fire to heat. With a mix of drawing and upsetting the smith shapes the faces so that when finally brought together, the center of the weld connects first and the connection spreads outward under the hammer blows, pushing out the flux (if used) and foreign material. The dressed metal goes back in the fire, is brought near to welding heat, removed from the fire, and brushed. Flux is sometimes applied, which prevents oxygen from reaching and burning the metal during forging, and it is returned to the fire. The smith now watches carefully to avoid overheating the metal. There is some challenge to this because, to see the color of the metal, the smith must remove it from the fire—exposing it to air, which can rapidly oxidize it. So the smith might probe into the fire with a bit of steel wire, prodding lightly at the mating faces. When the end of the wire sticks on to the metal, it is at the right temperature (a small weld forms where the wire touches the mating face, so it sticks). The smith commonly places the metal in the fire so he can see it without letting surrounding air contact the surface. (Note that smiths don't always use flux, especially in the UK.) Now the smith moves with rapid purpose, quickly taking the metal from the fire to the anvil and bringing the mating faces together. A few light hammer taps bring the mating faces into complete contact and squeeze out the flux—and finally, the smith returns the work to the fire. The weld begins with the taps, but often the joint is weak and incomplete, so the smith reheats the joint to welding temperature and works the weld with light blows to "set" the weld and finally to dress it to the shape.


Finishing

Depending on the intended use of the piece, a blacksmith may finish it in a number of ways: * A simple jig (a tool) that the smith might only use a few times in the shop may get the minimum of finishing—a rap on the anvil to break off scale and a brushing with a wire brush. * Files bring a piece to final shape, removing burrs and sharp edges, and smoothing the surface. *
Heat treatment Heat treating (or heat treatment) is a group of industrial, thermal and metalworking processes used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are a ...
and
case-hardening Case-hardening or carburization is the process of introducing carbon to the surface of a low-carbon iron, or more commonly a low-carbon steel object, in order to Hardened steel, harden the surface. Iron which has a carbon content greater than ~ ...
achieve the desired hardness. * The wire brush—as a hand tool or power tool—can further smooth, brighten, and polish surfaces. * Grinding stones, abrasive paper, and emery wheels can further shape, smooth, and polish the surface. A range of treatments and finishes can inhibit oxidation and enhance or change the appearance of the piece. An experienced smith selects the finish based on the metal and on the intended use of the item. Finishes include (among others): paint, varnish, bluing, browning, oil, and wax.


Blacksmith's striker

A blacksmith's striker is an assistant (frequently an
apprentice Apprenticeship is a system for training a potential new practitioners of a Tradesman, trade or profession with on-the-job training and often some accompanying study. Apprenticeships may also enable practitioners to gain a license to practice in ...
) whose job is to swing a large
sledgehammer A sledgehammer is a tool with a large, flat, massive, often metal head, attached to a long wooden or solid handle. The long handle is combined with a heavy head which allows the sledgehammer to pick up momentum during a swing and applying a large ...
in heavy forging operations, as directed by the blacksmith. In practice, the blacksmith holds the hot iron at the anvil (with tongs) in one hand, and indicates where to strike the iron by tapping it with a small hammer in the other hand. The striker then delivers a heavy blow to the indicated spot with a sledgehammer. During the 20th century and into the 21st century, this role has become increasingly unnecessary and automated through the use of
trip hammer Trip may refer to: Arts and entertainment Books Fictional characters * Trip (Pokémon), Trip (''Pokémon''), a ''Pokémon'' character * Trip (Power Rangers), in the American television series ''Time Force Power Rangers'' * Trip, in the 2013 film ...
s or reciprocating power hammers.


Blacksmith's materials

When iron
ore Ore is natural rock or sediment that contains one or more valuable minerals, typically including metals, concentrated above background levels, and that is economically viable to mine and process. The grade of ore refers to the concentration ...
is smelted into usable metal, a certain amount of
carbon Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 ...
is usually
alloy An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have prop ...
ed with the iron. (Charcoal is almost pure carbon.) The amount of carbon significantly affects the properties of the metal. If the carbon content is over 2%, the metal is called
cast iron Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...
, because it has a relatively low melting point and is easily cast. It is quite brittle, however, and cannot be forged so therefore not used for blacksmithing. If the carbon content is between 0.25% and 2%, the resulting metal is
tool steel Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive ...
, which can be heat treated as discussed above. When the carbon content is below 0.25%, the metal is either "
wrought iron Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%), or 0.25 for low carbon "mild" steel. Wrought iron is manufactured by heating and melting high carbon cast iron in an ...
(wrought iron is not smelted and cannot come from this process) " or "mild steel." The terms are never interchangeable. In preindustrial times, the material of choice for blacksmiths was wrought iron. This iron had a very low carbon content, and also included up to 5% of glassy iron silicate
slag The general term slag may be a by-product or co-product of smelting (pyrometallurgical) ores and recycled metals depending on the type of material being produced. Slag is mainly a mixture of metal oxides and silicon dioxide. Broadly, it can be c ...
in the form of numerous very fine stringers. This slag content made the iron very tough, gave it considerable resistance to rusting, and allowed it to be more easily "forge welded," a process in which the blacksmith permanently joins two pieces of iron, or a piece of iron and a piece of steel, by heating them nearly to a white heat and hammering them together. Forge welding is more difficult with modern mild steel, because it welds in a narrower temperature band. The fibrous nature of wrought iron required knowledge and skill to properly form any tool which would be subject to stress. Modern steel is produced using either the
blast furnace A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. ''Blast'' refers to the combustion air being supplied above atmospheric pressure. In a ...
or arc furnaces. Wrought iron was produced by a labor-intensive process called ''puddling'', so this material is now a difficult-to-find specialty product. Modern blacksmiths generally substitute mild steel for making objects traditionally of wrought iron. Sometimes they use electrolytic-process pure iron.


Other metals

Many blacksmiths also incorporate materials such as
bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloid ...
,
copper Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orang ...
, or
brass Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, but copper typically has the larger proportion, generally copper and zinc. I ...
in artistic products.
Aluminum Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...
and
titanium Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...
may also be forged by the blacksmith's process. Bronze is an alloy of copper and
tin Tin is a chemical element; it has symbol Sn () and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the ...
, while brass is an alloy of copper and
zinc Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic tabl ...
. Each material responds differently under the hammer and must be separately studied by the blacksmith.


Terminology

*
Iron Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...
is a naturally occurring metallic element. It is almost never found in its native form (pure iron) in nature. It is usually found as an
oxide An oxide () is a chemical compound containing at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion (anion bearing a net charge of −2) of oxygen, an O2− ion with oxygen in the oxidation st ...
or
sulfide Sulfide (also sulphide in British English) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive. ''Sulfide'' also refers to large families o ...
, with many other impurity elements mixed in. *
Wrought iron Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%), or 0.25 for low carbon "mild" steel. Wrought iron is manufactured by heating and melting high carbon cast iron in an ...
is the purest form of iron generally encountered or produced in quantity. It may contain as little as 0.04%
carbon Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 ...
(by weight). From its traditional method of manufacture, wrought iron has a fibrous internal texture. Quality wrought-iron blacksmithing takes the direction of these fibers into account during forging, since the strength of the material is stronger in line with the grain than across the grain. Most of the remaining impurities from the initial smelting become concentrated in silicate
slag The general term slag may be a by-product or co-product of smelting (pyrometallurgical) ores and recycled metals depending on the type of material being produced. Slag is mainly a mixture of metal oxides and silicon dioxide. Broadly, it can be c ...
trapped between the iron fibers. This slag produces a lucky side effect during forge-welding. When the silicate melts, it makes wrought iron self-fluxing. The slag becomes a liquid glass that covers the exposed surfaces of the wrought iron, preventing oxidation which would otherwise interfere with the successful welding process. *
Steel Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength a ...
is an alloy of iron and between 0.3% and 1.7% carbon by weight. The presence of carbon allows steel to assume one of several different crystalline configurations. Macroscopically, this is seen as the ability to "turn the hardness of a piece of steel on and off" through various processes of heat-treatment. If the concentration of carbon is held constant, this is a reversible process. Steel with a higher carbon percentage may be brought to a higher state of maximum hardness. *
Cast iron Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...
is iron that contains between 2.0% to 6% carbon by weight. There is so much carbon present that the hardness cannot be switched off. Hence, cast iron is a brittle metal, which can break like glass. Cast iron cannot be forged without special heat treatment to convert it to malleable iron. Steel with less than 0.6% carbon content cannot be hardened enough by simple heat-treatment to make useful hardened-steel tools. Hence, in what follows, wrought-iron, low-carbon-steel, and other soft unhardenable iron varieties are referred to indiscriminately as just ''iron''.


History, prehistory, religion, and mythology


Mythology

In Hindu mythology,
Tvastar Tvashtr (, ) or Tvashta (, ) is a Vedic Hindu artisan god or fashioner. He is mentioned as an Aditya (sons of goddess Aditi) in later Hindu scriptures like the ''Mahabharata'' and ''Puranas'', though his significance gets reduced. Tvashtr is som ...
also known as Vishvakarma is the blacksmith of the devas. The earliest references of
Tvastar Tvashtr (, ) or Tvashta (, ) is a Vedic Hindu artisan god or fashioner. He is mentioned as an Aditya (sons of goddess Aditi) in later Hindu scriptures like the ''Mahabharata'' and ''Puranas'', though his significance gets reduced. Tvashtr is som ...
can be found in the
Rigveda The ''Rigveda'' or ''Rig Veda'' (, , from wikt:ऋच्, ऋच्, "praise" and wikt:वेद, वेद, "knowledge") is an ancient Indian Miscellany, collection of Vedic Sanskrit hymns (''sūktas''). It is one of the four sacred canoni ...
.
Hephaestus Hephaestus ( , ; wikt:Hephaestus#Alternative forms, eight spellings; ) is the Greek god of artisans, blacksmiths, carpenters, craftsmen, fire, metallurgy, metalworking, sculpture and volcanoes.Walter Burkert, ''Greek Religion'' 1985: III.2. ...
(Latin: Vulcan) was the blacksmith of the
gods A deity or god is a supernatural being considered to be sacred and worthy of worship due to having authority over some aspect of the universe and/or life. The ''Oxford Dictionary of English'' defines ''deity'' as a God (male deity), god or god ...
in
Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...
and
Roman mythology Roman mythology is the body of myths of ancient Rome as represented in the literature and visual arts of the Romans, and is a form of Roman folklore. "Roman mythology" may also refer to the modern study of these representations, and to th ...
. A supremely skilled artisan whose forge was a volcano, he constructed most of the weapons of the gods, as well as beautiful assistants for his smithy and a metal fishing-net of astonishing intricacy. He was the god of metalworking, fire, and craftsmen. In
Celtic mythology Celtic mythology is the body of myths belonging to the Celtic peoples.Cunliffe, Barry, (1997) ''The Ancient Celts''. Oxford, Oxford University Press , pp. 183 (religion), 202, 204–8. Like other Iron Age Europeans, Celtic peoples followed ...
, the role of Smith is held by eponymous (their names do mean 'smith') characters : Goibhniu (Irish myths of the
Tuatha Dé Danann The Tuatha Dé Danann (, meaning "the folk of the goddess Danu"), also known by the earlier name Tuath Dé ("tribe of the gods"), are a supernatural race in Irish mythology. Many of them are thought to represent deities of pre-Christian Gaelic ...
cycle) or
Gofannon Gofannon () is a Middle Welsh reflex of Gobannus, one of the List of Celtic deities, deities worshipped by the Celts, ancient Celts. He features in Welsh mythology, Middle Welsh literature as a great Smith (metalwork), metal worker and as the son ...
(Welsh myths/ the
Mabinogion The ''Mabinogion'' () is a collection of the earliest Welsh prose stories, compiled in Middle Welsh in the 12th–13th centuries from earlier oral traditions. There are two main source manuscripts, created –1410, as well as a few earlier frag ...
).
Brigid Brigid or Brigit ( , ; meaning 'exalted one'),Campbell, MikBehind the Name.See also Xavier Delamarre, ''brigantion / brigant-'', in ''Dictionnaire de la langue gauloise'' (Éditions Errance, 2003) pp. 87–88: "Le nom de la sainte irlandaise ''B ...
or Brigit, an Irish
goddess A goddess is a female deity. In some faiths, a sacred female figure holds a central place in religious prayer and worship. For example, Shaktism (one of the three major Hinduism, Hindu sects), holds that the ultimate deity, the source of all re ...
, is sometimes described as the patroness of blacksmiths. In the Nart mythology of the
Caucasus The Caucasus () or Caucasia (), is a region spanning Eastern Europe and Western Asia. It is situated between the Black Sea and the Caspian Sea, comprising parts of Southern Russia, Georgia, Armenia, and Azerbaijan. The Caucasus Mountains, i ...
the hero known to the
Ossetians The Ossetians ( or ; ),Merriam-Webster (2021), s.v"Ossete" also known as Ossetes ( ), Ossets ( ), and Alans ( ), are an Iranian peoples, Iranian ethnic group who are indigenous to Ossetia, a region situated across the northern and southern side ...
as Kurdalægon and the
Circassians The Circassians or Circassian people, also called Cherkess or Adyghe (Adyghe language, Adyghe and ), are a Northwest Caucasian languages, Northwest Caucasian ethnic group and nation who originated in Circassia, a region and former country in t ...
as Tlepsh is a blacksmith and skilled craftsman whose exploits exhibit
shaman Shamanism is a spiritual practice that involves a practitioner (shaman) interacting with the spirit world through altered states of consciousness, such as trance. The goal of this is usually to direct spirits or spiritual energies into ...
ic features, sometimes bearing comparison to those of the Scandinavian deity
Odin Odin (; from ) is a widely revered god in Norse mythology and Germanic paganism. Most surviving information on Odin comes from Norse mythology, but he figures prominently in the recorded history of Northern Europe. This includes the Roman Em ...
. One of his greatest feats is acting as a type of male
midwife A midwife (: midwives) is a health professional who cares for mothers and Infant, newborns around childbirth, a specialisation known as midwifery. The education and training for a midwife concentrates extensively on the care of women throughou ...
to the hero Xamyc, who has been made the carrier of the embryo of his son Batraz by his dying wife the water-sprite Lady Isp, who spits it between his shoulder blades, where it forms a womb-like cyst. Kurdalaegon prepares a type of tower or scaffold above a quenching bath for Xamyc, and, when the time is right,
lances The English term lance is derived, via Middle English ''wikt:launce#Noun 3, launce'' and Old French ''wikt:lance#Old French, lance'', from the Latin ''wikt:lancea#Noun, lancea'', a generic term meaning a spear or javelin employed by both infant ...
the cyst to liberate the infant hero Batraz as a newborn babe of white-hot
steel Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength a ...
, whom Kurdalægon then quenches like a newly forged sword. The
Anglo-Saxon The Anglo-Saxons, in some contexts simply called Saxons or the English, were a Cultural identity, cultural group who spoke Old English and inhabited much of what is now England and south-eastern Scotland in the Early Middle Ages. They traced t ...
Wayland Smith, known in
Old Norse Old Norse, also referred to as Old Nordic or Old Scandinavian, was a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants ...
as Völundr, is a heroic blacksmith in Germanic mythology. The
Poetic Edda The ''Poetic Edda'' is the modern name for an untitled collection of Old Norse anonymous narrative poems in alliterative verse. It is distinct from the closely related ''Prose Edda'', although both works are seminal to the study of Old Norse ...
states that he forged beautiful gold rings set with wonderful gems. He was captured by king Níðuðr, who cruelly hamstrung him and imprisoned him on an island. Völundr eventually had his revenge by killing Níðuðr's sons and fashioning goblets from their skulls,
jewels A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewellery, jewelry or other adornments. Certain Rock (geology), rocks (such ...
from their eyes and a
brooch A brooch (, ) is a decorative jewellery item designed to be attached to garments, often to fasten them together. It is usually made of metal, often silver or gold or some other material. Brooches are frequently decorated with enamel or with gem ...
from their teeth. He then
rape Rape is a type of sexual assault involving sexual intercourse, or other forms of sexual penetration, carried out against a person without consent. The act may be carried out by physical force, coercion, abuse of authority, or against a person ...
d the king's daughter, after drugging her with strong beer, and escaped, laughing, on wings of his own making, boasting that he had fathered a child upon her. Seppo
Ilmarinen Ilmarinen () is a god and archetypal artificer from Finnish mythology. He is immortal and capable of creating practically anything. In addition, he is described as working the known metals of the time, including brass, copper, iron, gold, and sil ...
, the Eternal Hammerer, blacksmith and inventor in the ''
Kalevala The ''Kalevala'' () is a 19th-century compilation of epic poetry, compiled by Elias Lönnrot from Karelian and Finnish oral folklore and mythology, telling a story about the Creation of the Earth, describing the controversies and retaliatory ...
'', is an archetypal artificer from Finnish mythology.
Tubal-Cain Tubal-cain or Tubalcain ( – ''Tūḇal Qayīn'') is a person mentioned in the Bible, in , named therein as the first blacksmith. He is stated as the "forger of all instruments of bronze and iron". A descendant of Cain, he was the son of Lamec ...
is mentioned in the
book of Genesis The Book of Genesis (from Greek language, Greek ; ; ) is the first book of the Hebrew Bible and the Christian Old Testament. Its Hebrew name is the same as its incipit, first word, (In the beginning (phrase), 'In the beginning'). Genesis purpor ...
of the
Torah The Torah ( , "Instruction", "Teaching" or "Law") is the compilation of the first five books of the Hebrew Bible, namely the books of Genesis, Exodus, Leviticus, Numbers and Deuteronomy. The Torah is also known as the Pentateuch () ...
as the original smith. Ogun, the god of blacksmiths, warriors, hunters and others who work with iron is one of the pantheon of
Orisha Orishas (singular: orisha) are divine spirits that play a key role in the Yoruba religion of West Africa and several religions of the African diaspora that derive from it, such as Haitian Vaudou, Cuban Santería and Brazilian Candomblé. The p ...
traditionally worshipped by the
Yoruba people The Yoruba people ( ; , , ) are a West African ethnic group who inhabit parts of Nigeria, Benin, and Togo, which are collectively referred to as Yorubaland. The Yoruba constitute more than 50 million people in Africa, are over a million outsid ...
of
Nigeria Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of . With Demographics of Nigeria, ...
.


Before the Iron Age

Gold Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...
,
silver Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. ...
, and
copper Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orang ...
all occur in nature in their
native state In biochemistry, the native state of a protein or nucleic acid is its properly Protein folding, folded and/or assembled form, which is operative and functional. The native state of a biomolecule may possess all four levels of biomolecular structu ...
s, as reasonably pure metals
humans Humans (''Homo sapiens'') or modern humans are the most common and widespread species of primate, and the last surviving species of the genus ''Homo''. They are Hominidae, great apes characterized by their Prehistory of nakedness and clothing ...
probably worked these metals first. These metals are all quite
malleable Ductility refers to the ability of a material to sustain significant plastic deformation before fracture. Plastic deformation is the permanent distortion of a material under applied stress, as opposed to elastic deformation, which is reversi ...
, and humans' initial development of hammering techniques was undoubtedly applied to these metals. During the
Chalcolithic The Chalcolithic ( ) (also called the Copper Age and Eneolithic) was an archaeological period characterized by the increasing use of smelted copper. It followed the Neolithic and preceded the Bronze Age. It occurred at different periods in di ...
era and the
Bronze Age The Bronze Age () was a historical period characterised principally by the use of bronze tools and the development of complex urban societies, as well as the adoption of writing in some areas. The Bronze Age is the middle principal period of ...
, humans in the Mideast learned how to smelt, melt,
cast Cast may refer to: Music * Cast (band), an English alternative rock band * Cast (Mexican band), a progressive Mexican rock band * The Cast, a Scottish musical duo: Mairi Campbell and Dave Francis * ''Cast'', a 2012 album by Trespassers William ...
,
rivet A rivet is a permanent mechanical fastener. Before being installed, a rivet consists of a smooth cylinder (geometry), cylindrical shaft with a head on one end. The end opposite the head is called the ''tail''. On installation, the deformed e ...
, and (to a limited extent)
forge A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the smith to heat a piece of metal to a temperature at which it becomes easier to shape by forging, or to the ...
copper and bronze. Bronze is an
alloy An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have prop ...
of copper and approximately 10% to 20%
Tin Tin is a chemical element; it has symbol Sn () and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the ...
. Bronze is superior to just copper, by being harder, being more resistant to corrosion, and by having a lower melting point (thereby requiring less fuel to melt and cast). Much of the copper used by the Mediterranean World came from the island of
Cyprus Cyprus (), officially the Republic of Cyprus, is an island country in the eastern Mediterranean Sea. Situated in West Asia, its cultural identity and geopolitical orientation are overwhelmingly Southeast European. Cyprus is the List of isl ...
. Most of the tin came from the
Cornwall Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...
region of the island of
Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
, transported by sea-borne
Phoenicia Phoenicians were an Ancient Semitic-speaking peoples, ancient Semitic group of people who lived in the Phoenician city-states along a coastal strip in the Levant region of the eastern Mediterranean, primarily modern Lebanon and the Syria, Syrian ...
n and
Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...
traders. Copper and bronze cannot be hardened by heat-treatment, they can only be hardened by
cold working In metallurgy, cold forming or cold working is any metalworking process in which metal is shaped below its recrystallization temperature, usually at the ambient temperature at or near room temperature. Such processes are contrasted with hot wo ...
. To accomplish this, a piece of bronze is lightly hammered for a long period of time. The localized stress-cycling causes
work hardening Work hardening, also known as strain hardening, is the process by which a material's load-bearing capacity (strength) increases during plastic (permanent) deformation. This characteristic is what sets ductile materials apart from brittle materi ...
by changing the size and shape of the metal's
crystals A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macrosc ...
. The hardened bronze can then be ground to sharpen it to make edged tools. Clocksmiths as recently as the 19th century used
work hardening Work hardening, also known as strain hardening, is the process by which a material's load-bearing capacity (strength) increases during plastic (permanent) deformation. This characteristic is what sets ductile materials apart from brittle materi ...
techniques to harden the teeth of
brass Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, but copper typically has the larger proportion, generally copper and zinc. I ...
gear A gear or gearwheel is a rotating machine part typically used to transmit rotational motion and/or torque by means of a series of teeth that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or ...
s and ratchets. Tapping on just the teeth produced harder teeth, with superior wear-resistance. By contrast, the rest of the gear was left in a softer and tougher state, more capable of resisting cracking. Bronze is sufficiently corrosion-resistant that artifacts of bronze may last thousands of years relatively unscathed. Accordingly, museums frequently preserve more examples of Bronze Age metal-work than examples of artifacts from the much younger
Iron Age The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progre ...
. Buried iron artifacts may completely
rust Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH) ...
away in less than 100 years. Examples of ancient iron work still extant are very much the exception to the norm.


Iron Age

Concurrent with the advent of alphabetic characters in the
Iron Age The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progre ...
, humans became aware of the metal
iron Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...
. However, in earlier ages, iron's qualities, in contrast to those of bronze, were not generally understood. Iron artifacts, composed of
meteoric iron Meteoric iron, sometimes meteoritic iron, is a native metal and early-universe protoplanetary-disk remnant found in meteorites and made from the elements iron and nickel, mainly in the form of the mineral phases kamacite and taenite. Meteoric ...
, have the
chemical composition A chemical composition specifies the identity, arrangement, and ratio of the chemical elements making up a compound by way of chemical and atomic bonds. Chemical formulas can be used to describe the relative amounts of elements present in a com ...
containing up to 40%
nickel Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slo ...
. As this source of this iron is extremely rare and fortuitous, little development of smithing skills peculiar to iron can be assumed to have occurred. That we still possess any such artifacts of meteoric iron may be ascribed to the vagaries of climate, and the increased corrosion-resistance conferred on iron by the presence of nickel. During the (north) Polar Exploration of the early 20th century,
Inughuit The Inughuit (singular: Inughuaq), Inuhuit, or Smith Sound Inuit, historically called Arctic Highlanders or Polar Eskimos, are an ethnic subgroup of the Greenlandic Inuit. They are the northernmost group of Inuit and the northernmost people in No ...
, northern
Greenlandic Inuit The Greenlandic Inuit or sometimes simply the Greenlandic are an ethnic group and nation Indigenous peoples of the Americas, indigenous to Greenland, where they constitute the largest ethnic population. They share a common #History, ancestry, ...
, were found to be making iron knives from two particularly large nickel-iron meteors. One of these meteors was taken to
Washington, D.C. Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with ...
, where it was remitted to the custody of the
Smithsonian Institution The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums, Education center, education and Research institute, research centers, created by the Federal government of the United States, U.S. government "for the increase a ...
. The
Hittites The Hittites () were an Anatolian peoples, Anatolian Proto-Indo-Europeans, Indo-European people who formed one of the first major civilizations of the Bronze Age in West Asia. Possibly originating from beyond the Black Sea, they settled in mo ...
of
Anatolia Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
first discovered or developed the smelting of iron ores around 1500 BC. They seem to have maintained a near monopoly on the knowledge of iron production for several hundred years, but when their empire collapsed during the Eastern Mediterranean upheavals around 1200 BC, the knowledge seems to have escaped in all directions. In the
Iliad The ''Iliad'' (; , ; ) is one of two major Ancient Greek epic poems attributed to Homer. It is one of the oldest extant works of literature still widely read by modern audiences. As with the ''Odyssey'', the poem is divided into 24 books and ...
of
Homer Homer (; , ; possibly born ) was an Ancient Greece, Ancient Greek poet who is credited as the author of the ''Iliad'' and the ''Odyssey'', two epic poems that are foundational works of ancient Greek literature. Despite doubts about his autho ...
(describing the
Trojan War The Trojan War was a legendary conflict in Greek mythology that took place around the twelfth or thirteenth century BC. The war was waged by the Achaeans (Homer), Achaeans (Ancient Greece, Greeks) against the city of Troy after Paris (mytho ...
and
Bronze Age The Bronze Age () was a historical period characterised principally by the use of bronze tools and the development of complex urban societies, as well as the adoption of writing in some areas. The Bronze Age is the middle principal period of ...
Greek and Trojan warriors), most of the
armor Armour (Commonwealth English) or armor (American English; see American and British English spelling differences#-our, -or, spelling differences) is a covering used to protect an object, individual, or vehicle from physical injury or damage, e ...
and weapons (swords and spears) are stated to have been of bronze. Iron is not unknown, however, as
arrowhead An arrowhead or point is the usually sharpened and hardened tip of an arrow, which contributes a majority of the projectile mass and is responsible for impacting and penetrating a target, or sometimes for special purposes such as signaling. ...
s are described as iron, and a "ball of iron" is listed as a prize awarded for winning a competition. The events described probably occurred around 1200 BC, but Homer is thought to have composed this epic poem around 700 BC; so exactitude must remain suspect. The historical record during the
Late Bronze Age Collapse The Late Bronze Age collapse was a period of societal collapse in the Mediterranean basin during the 12th century BC. It is thought to have affected much of the Eastern Mediterranean and Near East, in particular Egypt, Anatolia, the Aegea ...
is very inconsistent. Very few iron artifacts remain from the early
Iron Age The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progre ...
, due to loss from corrosion and re-use of iron as a valuable commodity. However, all of the basic operations of blacksmithing were in use by the time the Iron Age reached a particular locality. The scarcity of records and artifacts, and the rapidity of the transition from Bronze Age to Iron Age, is a reason to use evidence of bronze smithing to infer about the early development of blacksmithing. It is uncertain when Iron weapons replaced Bronze weapons because the earliest Iron swords did not significantly improve on the qualities of existing bronze artifacts. Unalloyed iron is soft, does not hold an edge as well as a properly constructed bronze blade and needs more maintenance. Iron ores are more widely available than the necessary materials to create bronze however, which made iron weapons more economical than comparable bronze weapons. Small amounts of steel are often formed during several of the earliest refining practices, and when the properties of this alloy were discovered and exploited, steel edged weapons greatly outclassed bronze. Iron is different from most other materials (including bronze), in that it does not immediately go from a solid to a liquid at its
melting point The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state of matter, state from solid to liquid. At the melting point the solid and liquid phase (matter), phase exist in Thermodynamic equilib ...
. H2O is a solid (ice) at −1 C (31 F), and a liquid (water) at +1 C (33 F). Iron, by contrast, is definitely a solid at , but over the next it becomes increasingly plastic and more "taffy-like" as its temperature increases. This extreme temperature range of variable solidity is the fundamental material property upon which blacksmithing practice depends. Another major difference between bronze and iron fabrication techniques is that bronze ''can'' be melted. The melting point of iron is much higher than that of bronze. In the western (Europe & the Mideast) tradition, the technology to make fires hot enough to melt iron did not arise until the 16th century, when smelting operations grew large enough to require overly large bellows. These produced blast-furnace temperatures high enough to melt partially refined ores, resulting in ''
cast iron Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...
''. Thus cast-iron frying pans and cookware did not become possible in Europe until 3000 years after the introduction of iron smelting. China, in a separate developmental tradition, was producing cast iron at least 1000 years before this. Although iron is quite abundant, good quality steel remained rare and expensive until the industrial developments of
Bessemer process The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace. The key principle is steelmaking, removal of impurities and undesired eleme ...
''et al.'' in the 1850s. Close examination of blacksmith-made antique tools clearly shows where small pieces of steel were forge-welded into iron to provide the hardened steel cutting edges of tools (notably in axes, adzes, chisels, etc.). The re-use of quality steel is another reason for the lack of artifacts. The Romans (who ensured that their own weapons were made with good steel) noted (in the 4th century BC) that the
Celts The Celts ( , see Names of the Celts#Pronunciation, pronunciation for different usages) or Celtic peoples ( ) were a collection of Indo-European languages, Indo-European peoples. "The Celts, an ancient Indo-European people, reached the apoge ...
of the Po River Valley had iron, but not good steel. The Romans record that during battle, their Celtic opponents could only swing their swords two or three times before having to step on their swords to straighten them. On the
Indian subcontinent The Indian subcontinent is a physiographic region of Asia below the Himalayas which projects into the Indian Ocean between the Bay of Bengal to the east and the Arabian Sea to the west. It is now divided between Bangladesh, India, and Pakista ...
, Wootz steel was, and continues to be, produced in small quantities. In southern Asia and western Africa, blacksmiths form endogenous castes that sometimes speak distinct languages.


Medieval period

In the medieval period, blacksmithing was considered part of the set of ''mechanic arts, seven mechanical arts''. Prior to the Industrial Revolution, a "village Forge, smithy" was a staple of every town. Factories and mass-production reduced the demand for blacksmith-made tools and hardware. Blacksmiths typically worked in small shops, often in the center of a village or town. Their shops were typically equipped with a forge, an anvil, and a variety of other tools. The work of a medieval blacksmith was physically demanding and often dangerous. Blacksmiths had to be able to lift and move heavy pieces of metal, and they had to be careful not to burn themselves on the hot forge. Despite the challenges, blacksmithing was a respected trade in medieval society. Blacksmiths were considered to be skilled artisans, and their work was essential to the functioning of medieval society.


Women

Whilst the majority of blacksmiths named in Britain in the medieval period were men, some women also worked as smiths. For example, in 1346 Katherine Le Fevre was appointed by Edward III to ‘keep up the king’s forge within the Tower of London, Tower and carry on [its] work … receiving the wages pertaining to the office’. Another example is of Alice la Haubergere (Mail-maker) who owned an armour shop and worked as an armourer in Cheapside. In York in 1403 Agnes Hecche was left her father's mail-making equipment in his will, and took over the family business with her brother. Others included the Bellfounding, bell founder Johanna Hill and Johanna Sturdy, Johanna Hill, the cutler Agnes Cotiller and Eustachia l’Armurer.


Medieval blacksmithing techniques

Medieval blacksmiths used a variety of techniques to create metal objects. One of the most common techniques was forging. Forging is the process of heating metal until it is soft enough to be shaped with a hammer and anvil. Another common technique was welding. Welding is the process of joining two pieces of metal together by heating them until they melt and then hammering them together. Blacksmiths also used a variety of other techniques, such as casting, cutting, and filing. The original fuel for forge fires was charcoal. Coal did not begin to replace charcoal until the forests of first Britain (during the AD 17th century), and then the eastern United States of America (during the 19th century) were largely depleted. Coal ''can be'' an inferior fuel for blacksmithing, because much of the world's coal is contaminated with sulfur. Sulfur contamination of iron and steel make them "red short", so that at red heat they become "crumbly" instead of "plastic". Coal sold and purchased for blacksmithing should be largely free of sulfur. European blacksmiths before and through the medieval era spent a great deal of time heating and hammering iron before forging it into finished articles. Although they were unaware of the chemical basis, they were aware that the quality of the iron was thus improved. From a scientific point of view, the reducing atmosphere of the forge was both removing oxygen (rust), and soaking more
carbon Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 ...
into the iron, thereby developing increasingly higher grades of steel as the process was continued.


Industrial era

During the eighteenth century, agents for the Sheffield cutlery industry scoured the British country-side, offering new carriage springs for old. Springs must be made of hardened steel. At this time, the processes for making steel produced an extremely variable product—quality was not ensured at the initial point of sale. Springs that had survived cracking through hard use over the rough roads of the time, had proven to be of a better quality steel. Much of the fame of Sheffield cutlery (knives, shears, etc.) was due to the extreme lengths the companies took to ensure they used high-grade steel. During the first half of the nineteenth century, the US government included in their treaties with many Native Americans in the United States, Native American tribes, that the US would employ blacksmiths and wikt:striker, strikers at United States Army, Army forts, with the expressed purpose of providing Native Americans with iron tools and repair services. During the early to mid-nineteenth century, both European armies as well as both the Federal government of the United States, U.S. Federal and Confederate States Army, Confederate armies employed blacksmiths to shoe horses and repair equipment such as wagons, horse tack, and artillery equipment. These smiths primarily worked at a traveling forge that when combined with a Limbers and caissons (military), limber, comprised wagons specifically designed and constructed as blacksmith shops on wheels to carry the essential equipment necessary for their work. Lathes, patterned largely on their woodturning counterparts, had been used by some blacksmiths since the middle-ages. During the 1790s Henry Maudslay created the first screw-cutting lathe, a watershed event that signaled the start of blacksmiths being replaced by machinists in factories for the hardware needs of the populace. Samuel Colt neither invented nor perfected interchangeable parts, but his insistence (and other industrialists at this time) that his firearms be manufactured with this property, was another step towards the obsolescence of metal-working artisans and blacksmiths. (See also Eli Whitney). As demand for their products declined, many more blacksmiths augmented their incomes by taking in work shoeing horses. A shoer-of-horses was historically known as a
farrier A farrier is a specialist in equine hoof care, including the trimming and balancing of horses' hooves and the placing of shoes on their hooves, if necessary. A farrier combines some blacksmith's skills (fabricating, adapting, and adju ...
in English. With the introduction of automobiles, the number of blacksmiths continued to decrease, many former blacksmiths becoming the initial generation of automobile Mechanics. The nadir of blacksmithing in the United States was reached during the 1960s, when most of the former blacksmiths had left the trade, and few if any new people were entering the trade. By this time, most of the working blacksmiths were those performing
farrier A farrier is a specialist in equine hoof care, including the trimming and balancing of horses' hooves and the placing of shoes on their hooves, if necessary. A farrier combines some blacksmith's skills (fabricating, adapting, and adju ...
work, so the term ''blacksmith'' was effectively co-opted by the farrier trade.


Neoclassicism era

In the final part of the 18th century, forged ironwork continued to decline due to the aforementioned industrial revolution, shapes of the elements in the designs of window grilles and other decorative functional items continued to contradict natural forms, surfaces begin to be covered in paint, cast iron elements are incorporated into the forged designs. Main features of Neoclassicism ironwork (also referred to as Louis XVI style and Empire style ironwork) include smooth straight bars, decorative geometric elements, double or oval volutes and the usage of elements from Classical antiquity (Meander (art), wreaths etc.). Typical for this kind of ironwork is that the ironwork is painted white with gold (gilded) elements.


20th and 21st centuries

During the 20th century various gases (natural gas, acetylene, etc.) have also come to be used as fuels for blacksmithing. While these are fine for blacksmithing iron, special care must be taken when using them to blacksmith steel. Each time a piece of steel is heated, there is a tendency for the carbon content to leave the steel (decarburization). This can leave a piece of steel with an effective layer of unhardenable iron on its surface. In a traditional charcoal or coal forge, the fuel is really just carbon. In a properly regulated charcoal/coal fire, the air in and immediately around the fire should be a oxidizing and reducing flames, reducing atmosphere. In this case, and at elevated temperatures, there is a tendency for vaporized carbon to soak ''into'' steel and iron, counteracting or negating the decarburizing tendency. This is similar to the process by which a case of steel is developed on a piece of iron in preparation for case hardening. A renewed interest in blacksmithing occurred as part of the trend in "do-it-yourself" and "self-sufficiency" that occurred during the 1970s. Currently there are many books, organizations and individuals working to help educate the public about blacksmithing, including local groups of smiths who have formed clubs, with some of those smiths demonstrating at historical sites and living history events. Some modern blacksmiths who produce decorative metalwork refer to themselves as artist-blacksmiths. In 1973 the Artists Blacksmiths’ Association of North America was formed with 27 members. By 2013 it had almost 4000 members. Likewise the British Artist Blacksmiths Association was created in 1978, with 30 charter members and had about 600 members in 2013 and publish for members a quarterly magazine. While developed nations saw a decline and re-awakening of interest in blacksmithing, in many developing nations blacksmiths continued making and repairing iron and steel tools and hardware for people in their local area.


Notable blacksmiths


Mythological and religious

* Ptah, patron god of craftsmen and architects. * Ama-Tsu-Mara, Ame-no-Mahitotsu, god of metal-working and blacksmiths. * Svarog, god of the forge, fire, the sun, and creation. * Goibniu, Irish god of blacksmithing, one of the Trí Dée Dán. *
Hephaestus Hephaestus ( , ; wikt:Hephaestus#Alternative forms, eight spellings; ) is the Greek god of artisans, blacksmiths, carpenters, craftsmen, fire, metallurgy, metalworking, sculpture and volcanoes.Walter Burkert, ''Greek Religion'' 1985: III.2. ...
/Vulcan (mythology), Vulcan, god of metalworking and the forge. * Thor, god of storms, metalworking, and the forge. * Tubal-cain, in biblical tradition, the first smith. * Sons of Ivaldi, in Norse mythology, three dwarf brothers who make a variety of gifts for the Gods. * Reginn, Mime, brother of Alberich, Wagnerian dwarfs and maker of the sword Nothung and the Tarnhelm. * Kaveh the blacksmith, Kāveh, in Persian mythology, was a blacksmith who launched a national uprising against the evil foreign tyrant Zahhak, Zahāk, after losing two of his children to serpents of Zahāk. * Tlepsh and Kurdalægon respectively the Circassians, Circassian and Ossetian people, Ossetian forms of the blacksmith hero of the Narts, who presides at the birth / quenching of the
steel Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength a ...
child who grows into the hero Batraz / Pataraz.


Historical

* James Black (blacksmith), James Black, creator of original Bowie knife * John Silvester (blacksmith), John Silvester, a blacksmith at the Tower of London * Panday Pira, the first Filipino cannon maker


Modern

* Elizabeth Brim, noted for feminine imagery of lingerie or shoes in her work, also for the Brim technique of inflating balloons of hot metal with compressed air. * Roland Greefkes, wrought iron work * Paul Zimmermann (blacksmith), Paul Zimmermann, contemporary forge work


See also

* Blacksmiths festival, an annual festival that takes place in Ivano-Frankivsk * Blacksmith Scene (also, known as Blacksmith Scene #1 and Blacksmithing Scene) * Bladesmith * Coppersmith * Goldsmith *
Hephaestus Hephaestus ( , ; wikt:Hephaestus#Alternative forms, eight spellings; ) is the Greek god of artisans, blacksmiths, carpenters, craftsmen, fire, metallurgy, metalworking, sculpture and volcanoes.Walter Burkert, ''Greek Religion'' 1985: III.2. ...
* Hefaiston, one of the most important annual meetings of artist blacksmiths in the world (Czech Republic) * Ironmongery * Makera Assada * Metallurgy * National School of Blacksmithing (United Kingdom) * Silversmith * St Clement's Day * Tinsmith * Whitesmith * Worshipful Company of Blacksmiths


Footnotes


References

* Andrews, Jack. ''New Edge of the Anvil'', 1994. * Einhorn, David, M. ''Civil War Blacksmithing: : Constructing Cannon Wheels, Traveling Forge, Knives, and Other Projects and Information'', 2010. * McRaven, Charles. ''The Blacksmith's Craft, originally published in 1981 as Country Blacksmithing''. * Sims, Lorelei. ''The Backyard Blacksmith — Traditional Techniques for the Modern Smith'', 2006. * Holmstrom, John Gustaf. ''Modern Blacksmithing, Rational Horse Shoeing and Wagon Making'' (With Rules, Tables, Recipes, Etc.)


External links


Royal Naval Museum – Sea Your History – Blacksmiths

Find Blacksmiths In the UK with The National Directory Of Blacksmiths

'' "Be Your Own Blacksmith" '', Popular Science, January 1949
basics of being a blacksmith
(ABANA) The Artist Blacksmith's Association of North America, Inc.

Family of English blacksmiths dating back to c1550.

Blacksmith Scene (1893) (video)

Forging of Chain by Two Blacksmiths (video)
{{Authority control Blacksmiths, Metalworking occupations Articles containing video clips