1018 Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Overall Length 12 in, Overall Width 8 in, Thickness 0.25 in, Thickness Tolerance -0.003 in, Yield Strength 54,000 psi, Fabrication Cold Finished, Machinability 78 Percent, Rockwell Hardness Not Rated, Tensile Strength 80,000 psi, Length Tolerance +/-1 in, Width Tolerance -0.013 in, Standards A108, ASTM A29, Appearance Unpolished, Brinell Hardness 70