A36 steel

A36 steel is a common structural steel alloy utilized in the United States. The A36 (UNS K02600) standard was established by the ASTM International. The standard was published in 1960 and has been updated several times since. Prior to 1960, the dominant standards for structural steel in North America were A7 (until 1967) and A9 (for buildings, until 1940). Note that SAE/AISI A7 and A9 tool steels are not the same as the obsolete ASTM A7 and A9 structural steels.

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