4142 Alloy Steel Rectangular Bar, Material Alloy Steel, Material Grade 4142, Thickness 0.5 in, Thickness Tolerance +/-0.001 in, Overall Length 36 in, Overall Width 1 3/4 in, Fabrication Hot Rolled, Heat Treatable Yes, Heat Treatment Pre-Hardened, Mechanical Finish Precision Ground, Yield Strength 60,500 psi, Tensile Strength 95,000 psi, Brinell Hardness 261, Rockwell Hardness C32, Standards AISI 4142, ASTM A322, UNS G41420, Includes Material Certificate Yes, Length Tolerance +0.25 in/+0.5 in