1018 Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Yes, Heat Treatment Case Hardened, Mechanical Finish Polished, Overall Length 36 in, Overall Width 12 in, Thickness 0.63 in, Thickness Tolerance +0.000 in/-0.0013 in, Yield Strength 54,000 psi, Fabrication Cold Finished, Machinability 78 Percent, Rockwell Hardness Not Rated, Tensile Strength 80,000 psi, Width Tolerance +0.000 in/-0.0013 in, Standards ASTM A108, ASTM A29, Brinell Hardness 70, Shape Plate