Bright surface SATM A500 steel round bar

ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes. A500 is the most common specification in North America for Hollow Structural Sections (HSS).

ASTM A500 offers high weldability and is used frequently in structural applications in bridges and buildings as well as in both the automotive and appliance industry.

The black ASTM A500 steel round bar is also used for fire sprinkler systems because ASTM A500 is more fire-resistant than galvanized round bar. Another related standard is ASTM A50, which is a hot-formed version of this A500. ASTM A500 defines four grades of carbon steel based primarily on material strength.

ASTM A500 cold working

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.

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