ASTM A500 is a standard specification published by the
ASTM for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is commonly specified 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, but the more stringent CSA G40.21 is preferred in Canada. Another related standard is ASTM A501, which is a hot-formed version of this A500. ASTM A500 defines four grades of
carbon steel 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 an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, ...
, 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/m
3 (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 yield strength requirements are higher for square and rectangular than for round tubing. 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