Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Heat Treatable, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Overall Length 6 in, Overall Width 6 in, Thickness 1.5 in, Thickness Tolerance -0.004 in, Yield Strength 54,000 psi, Fabrication Cold Rolled, Machinability 78 Percent, Rockwell Hardness 39 HRC, Tensile Strength 80,000 psi, Length Tolerance +0.125 in/0 in, Width Tolerance -0.008 in, Standards ASTM A108, ASTM A29