A36 Carbon Steel Plate Material Carbon Steel Material Grade A36 Heat Treatable No Heat Treatment No Heat Treatment Mechanical Finish Mill Overall Length 4 ft Overall Width 12 in Thickness 0.25 in Thickness Tolerance +/-0.030 in Yield Strength 36 000 psi Fabrication Hot Rolled Machinability 72 Percent Rockwell Hardness Not Rated Tensile Strength 58 000 psi Length Tolerance +/-0.125 in Width Tolerance +/-0.125 in Standards ASTM A36 Includes Material Certificate Yes