Carbon Steel Flat Bar, Material Carbon Steel, Material Grade A1011, Thickness 0.135 in, Thickness Tolerance 0 in/-0.006 in, Overall Length 12 in, Overall Width 6 in, Fabrication Hot Rolled, Heat Treatable Not Heat Treatable, Heat Treatment Annealed, Mechanical Finish Mill, Yield Strength 36,000 psi, Tensile Strength 58,000 psi, Brinell Hardness 135 BHN, Rockwell Hardness 75 HRB, Machinability Not Rated, Standards ASTM A1011, Includes Material Certificate No Certificates Included