1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 1.25 in, Thickness Tolerance +0.000 in/-0.006 in, Overall Length 24 in, Overall Width 3 3/4 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment Case Hardened, Mechanical Finish Polished, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Shape Rectangular Bar