Alloy Steel Plate, Material Alloy Steel, Material Grade 4142, Heat Treatable Heat Treatable, Heat Treatment Pre-Hardened, Mechanical Finish Mill, Overall Length 36 in, Overall Width 8 in, Thickness 1 in, Thickness Tolerance +/-0.001 in, Yield Strength Not Rated, Fabrication Hot Rolled, Rockwell Hardness 94 HRB, Machinability 50 Percent, Tensile Strength Not Rated, Width Tolerance +0.005 in, Standards ASTM A322, Includes Material Certificate Material Certificate with Lot Number