ASTM A500 is a standard specification published by the

ASTM ASTM International, formerly known as American Society for Testing and Materials, is a standards organization that develops and publishes voluntary consensus technical international standards for a wide range of materials, products, systems and s ...

for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is the most commonly specified ASTM standard in the US for

hollow structural section A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology. HSS members can be cir ...

s. Another related standard is ASTM A501, which is a hot-formed version of this A500. Other HSS ASTM Standards include ASTM A1065, ASTM A1085 and ASTM A847. CSA G40.21 is the preferred HSS standard in Canada. ASTM A500 defines four grades of

carbon steel Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states: * no minimum content is specified or required for chromium, cobalt ...

based primarily on material strength.ASTM A500/A500M-07. This is a standard set by the standards organization

ASTM International ASTM International, formerly known as American Society for Testing and Materials, is a standards organization that develops and publishes voluntary consensus technical international standards for a wide range of materials, products, systems and s ...

, a voluntary standards development organization that sets technical standards for materials, products, systems, and services.

Density

Like other carbon steels, A500 and A501 steels have a specific gravity of approximately 7.85, and therefore a density of approximately 7850 kg/m³ (0.284 pounds per cubic inch).A500A steel material properties
, accessed October 8, 2006.

Grades

A500 cold-formed tubing comes in four grades based on chemical composition, tensile strength, and heat treatment. The most commonly specified and utilized is Grade C. The minimum copper content is optional. Grade D must be heat treated.

Mechanical Properties

Shaped structural tubing

References

{{ASTM standards Steels ASTM standards Structural engineering standards