Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade A36, Thickness 1.25 in, Thickness Tolerance +/-0.0312 in, Overall Length 24 in, Overall Width 4 1/2 in, Fabrication Hot Rolled, Heat Treatable Not Heat Treatable, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 36,000 psi, Tensile Strength 67,000 psi, Brinell Hardness 120 BHN, Rockwell Hardness 52 HRC, Machinability 72 Percent, Standards ASTM A36