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Noric Steel
Noric steel is a historical steel from Noricum, a kingdom located in modern Austria and Slovenia. The proverbial hardness of Noric steel is expressed by Ovid: ''"...durior ..ferro quod noricus excoquit ignis..."'' which roughly translates to "...harder than iron which Noric fire tempers Anaxarete.html" ;"title="as Anaxarete">as Anaxarete towards the advances of Iphis]..." and it was widely used for the weapons of the Roman military after Noricum joined the Empire in 16 BC. The iron ore was quarried at two mountains in modern Austria still called ''Erzberg'' "ore mountain" today, one at Hüttenberg, Carinthia and the other at Eisenerz, Styria, separated by . The latter is the site of the modern Erzberg mine. Buchwald identifies a sword of found in Krenovica, Moravia as an early example of Noric steel due to a chemical composition consistent with Erzberg ore. A more recent sword, dating to and found in Zemplin, eastern Slovakia, is of extraordinary length for the period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 and low raw material cost, steel is one of the most commonly manufactured materials in the world. Steel is used in structures (as concrete Rebar, reinforcing rods), in Bridge, bridges, infrastructure, Tool, tools, Ship, ships, Train, trains, Car, cars, Bicycle, bicycles, Machine, machines, Home appliance, electrical appliances, furniture, and Weapon, weapons. Iron is always the main element in steel, but other elements are used to produce various grades of steel demonstrating altered material, mechanical, and microstructural properties. Stainless steels, for example, typically contain 18% chromium and exhibit improved corrosion and Redox, oxidation resistance versus its carbon steel counterpart. Under atmospheric pressures, steels generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zemplín (region)
Zemplín is the name of an informal List of traditional regions of Slovakia, traditional region located in eastern Slovakia. It includes the Slovak part of the former Zemplén County, Zemplén county, often including the Slovak part of the Ung county (Slovak: ''Užská župa''/''Užský komitát''). Geography Zemplín region stretches from the Carpathian Mountains in the north to the lowest point in Slovakia at AMSL. The region is situated in the easternmost part of Slovakia (except for the region between Vihorlatské vrchy and the Latorica river, if the former territory of Ung county is not included). Rivers in the region include: Bodrog, Laborec, Latorica, Uzh, Ondava and a small part of the Tisza river. Zemplín is no longer an administrative region, but is divided between two of the 21 official tourism regions, Lower Zemplín and Upper Zemplín. Administratively, the region is divided between Košice Region, which includes Trebišov District, Trebišov and the western part o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Danish Academy Of Sciences And Letters
The Royal Danish Academy of Sciences and Letters ({{Langx, da, Det Kongelige Danske Videnskabernes Selskab or ''Videnskabernes Selskab'') is a Danish academy of science. The Royal Danish Academy was established on 13 November 1742, and was created with the purpose of strengthening the position of Science in Denmark as well as promoting interdisciplinary understanding. The Royal Danish Academy works as a body of cooperation and a meeting place for prominent scientists from all areas of basic scientific research. Its core activities consist of organizing the biweekly meetings for the academy's members, publishing scientific works, advising, and communicating, organizing and conducting events and lectures of a scientific character (e.g. public lectures and symposiums) as well as participating in international cooperation with other scientific academies and with scientific organizations like for example ISC and EASAC. Since 1745, the Royal Danish Academy has had its own publishing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wootz Steel
Wootz steel is a crucible steel characterized by a pattern of bands and high carbon content. These bands are formed by sheets of microscopic carbides within a tempered martensite or pearlite matrix in higher-carbon steel, or by ferrite and pearlite banding in lower-carbon steels. It was a pioneering steel alloy developed in southern India in the mid-1st millennium BC and exported globally. History Wootz steel originated in the mid-1st millennium BC in India, wootz steel was made in Golconda in Telangana, Karnataka, Tamilnadu and Sri Lanka. The steel was exported as cakes of steely iron that came to be known as "wootz". The method was to heat black magnetite ore in the presence of carbon in a sealed clay crucible inside a charcoal furnace to completely remove slag. An alternative was to smelt the ore first to give wrought iron, then heat and hammer it to remove slag. The carbon source was bamboo and leaves from plants such as Avārai. Locals in Sri Lanka adopted the productio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toledo Steel
Toledo steel, historically known for being unusually hard, is from Toledo, Spain, which has been a traditional sword-making, metal-working center since about the Roman period, and came to the attention of Rome when used by Hannibal in the Punic Wars. It soon became a standard source of weaponry for Roman legions. Toledo steel was famed for its high quality alloy. History The name "Toledo steel" comes from the city where these special steel products were most-notably crafted: Toledo, Spain. Toledo steel forging techniques were developed from ancient customs associated with culture in the Iberian Peninsula, and used to forge many different types of weapons over the course of many centuries. In simple terms, the Toledo steel technique consisted of a steel blade that enveloped a wrought iron strip, thus preventing the steel from bending or cracking. As such, the strong and durable Toledo steel weapons were said to have had a "soul of iron". In ancient Iberia, blacksmiths in Tol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamahagane Steel
is a type of steel made in the Japanese tradition. The word means 'precious', and the word means 'steel'. is used to make Japanese swords, daggers, knives, and other kinds of tools. The carbon content of the majority of analyzed Japanese swords historically lies between a mass of 0.5–0.7%; however, the range extends up to 1.5%. Production is made of an found in Shimane, Japan. There are two main types of iron sands: and . is lower quality, is better quality. The (furnace master) decides the amount of the mixing parts. Depending on the desired result, the mixes one or more types of sands. The iron sand is put in a , a clay tub furnace. The clay tub measures about tall, long and wide. The tub is dried and heated to about . Then, it is mixed with charcoal to add carbon to the steel so it can be hardened. The process of making continues for 36–72 hours (a day and a half to three days), depending on how many people work and how much metal is to be obtained. Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Tène Culture
The La Tène culture (; ) was a Iron Age Europe, European Iron Age culture. It developed and flourished during the late Iron Age (from about 450 BC to the Roman Republic, Roman conquest in the 1st century BC), succeeding the early Iron Age Hallstatt culture without any definite cultural break, under considerable Mediterranean influence from the Greeks in pre-Roman Gaul, the Etruscan civilization, Etruscans, and the Culture of Golasecca, Golasecca culture, but whose artistic style nevertheless did not depend on those Mediterranean influences. La Tène culture's territorial extent corresponded to what is now Prehistory of France#The Iron Age, France, History of Belgium#Celtic and Roman periods, Belgium, Early history of Switzerland#Iron Age, Switzerland, History of Austria#Iron Age, Austria, History of England#Later Prehistory, England, History of Germany#Iron Age, Southern Germany, the History of the Czech lands#Iron Age, Czech Republic, Prehistoric Italy#Iron Age, Northern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Age Sword
Swords made of iron (as opposed to bronze) appear from the Early Iron Age ( century BC), but do not become widespread before the 8th century BC. Early Iron Age swords were significantly different from later steel swords. They were work-hardened, rather than quench-hardened, which made them about the same or only slightly better in terms of strength and hardness to earlier bronze swords. This meant that they could still be bent out of shape during use. The easier production, however, and the greater availability of the raw material allowed for much larger scale production. Eventually smiths learned of processes to refine smelted iron and make steel. By quenching (making the steel hard and brittle) and tempering (removing the brittleness), swords could be made that would suffer much less damage, and would spring back into shape if bent. It took a long time, however, before this was done consistently, and even until the end of the early medieval period, many swords were still u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Age Europe
In Europe, the Iron Age is the last stage of the prehistoric Europe, prehistoric period and the first of the protohistory, protohistoric periods,The Junior Encyclopædia Britannica: A reference library of general knowledge. (1897). Chicago: E.G. Melvin. (seriously? 1897 "Junior" encyclopedia? which initially meant descriptions of a particular area by Greek and Roman writers. For much of Europe, the period came to an abrupt end after conquest by the Romans, though ironworking remained the dominant technology until recent times. Elsewhere, the period lasted until the early centuries AD, and either Christianization or a new conquest in the Migration Period. Ferrous metallurgy, Iron working was introduced to Europe in the late 11th century BC, probably from the Caucasus, and slowly spread northwards and westwards over the succeeding 500 years. For example, the Iron Age of Prehistoric Ireland begins around 500 BC, when the Greek Iron Age had already ended, and finishes around 400 AD. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Ferrous Metallurgy
History is the systematic study of the past, focusing primarily on the human past. As an academic discipline, it analyses and interprets evidence to construct narratives about what happened and explain why it happened. Some theorists categorize history as a social science, while others see it as part of the humanities or consider it a hybrid discipline. Similar debates surround the purpose of history—for example, whether its main aim is theoretical, to uncover the truth, or practical, to learn lessons from the past. In a more general sense, the term ''history'' refers not to an academic field but to the past itself, times in the past, or to individual texts about the past. Historical research relies on primary and secondary sources to reconstruct past events and validate interpretations. Source criticism is used to evaluate these sources, assessing their authenticity, content, and reliability. Historians strive to integrate the perspectives of several sources to develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damascus Steel
Damascus steel (Arabic: فولاذ دمشقي) refers to the high-carbon crucible steel of the blades of historical swords forged using the wootz process in the Near East, characterized by distinctive patterns of banding and mottling reminiscent of flowing water, sometimes in a "ladder" or "rose" pattern. "Damascus steel" developed a reputation for being tough, resistant to shattering, and capable of being honed to a sharp, resilient edge. The term "Damascus steel" traces its roots to the medieval city of Damascus, Syria, perhaps as an early example of branding. However, there is now a general agreement that many of the swords, or at least the steel ingots from which they were forged, were imported from elsewhere. Originally, they came from either Southern India, where the steel-making techniques used were first developed, or from Khorasan, Iran. The methods used to create medieval Damascus steel died out by the late 19th century. Modern steelmakers and metallurgists have stud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crucible Steel
Crucible steel is steel made by melting pig iron, cast iron, iron, and sometimes steel, often along with sand, glass, ashes, and other fluxes, in a crucible. Crucible steel was first developed in the middle of the 1st millennium BCE in Southern India and Sri Lanka using the wootz process. In ancient times, it was not possible to produce very high temperatures with charcoal or coal fires, which were required to melt iron or steel. However, pig iron, having a higher carbon content and thus a lower melting point, could be melted, and by soaking wrought iron or steel in the liquid pig-iron for a long time, the carbon content of the pig iron could be reduced as it slowly diffused into the iron, turning both into steel. Crucible steel of this type was produced in South and Central Asia during the medieval era. This generally produced a very hard steel, but also a composite steel that was inhomogeneous, consisting of a very high-carbon steel (formerly the pig-iron) and a lower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
