A1011 Carbon Steel Sheet Material Carbon Steel Material Grade A1011 Heat Treatable No Heat Treatment Annealed Mechanical Finish Mill Overall Length 18 in Overall Width 18 in Thickness 0.135 in Thickness Tolerance -0.006/+0.000 in Yield Strength 36 000 psi Fabrication Hot Rolled Machinability Not Rated Rockwell Hardness B75 Tensile Strength 58 000 psi Length Tolerance -0.125/+0.125 in Width Tolerance -0.125/+0.125 in Standards ASTM A1011 Includes Material Certificate Yes