Reference Info

Standards For Ferrous Metals

STANDARD SPECIFICATION FOR STRUCTURAL STEEL A36

Product Shapes Plates Bars
Thickness, in. (mm) All To 3/4 (19), incl. Over 3/4 to 1 1/2 (19 to 38), incl. Over 1 1/2 to 2 1/2 (38 to 64), incl. Over 2 1/2 to 4 (64 to 102), incl. Over 4 (102) To 3/4 (19), incl. Over 3/4 to 1 1/2 (19 to 38), incl. Over 1 1/2 to 4 (102), incl. Over 4 (102)
Carbon, max, percent 0.26 0.25 0.25 0.26 0.27 0.29 0.26 0.27 0.28 0.29
Manganese, percent     .8-1.2 .8-1.2 .85-1.2 .85-1.2   .6-.9 .6-.9 .6-.9
Phosphorus, max, percent 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04
Sulfur, max, percent 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Silicon, percent       .15-.3 .15-.3 .15-.3        
Copper, min, percent, when copper steel is specified 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

Manganese content of .85-1.35 percent and silicon content of .15-.30 percent is required for shapes over 426 lb./ft.*



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