Aluminum Flat Bar Stock, Aluminum, 6061, T6511, Flat, 6 in Overall Length, Length Tolerance +0.125 in/0 in, 3 1/2 in Overall Width, Width Tolerance +/-0.024 in, 1.5 in Thickness, Thickness Tolerance +/-0.014 in, Fabrication Extruded, Heat Treatment Tempered, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 37,000 psi, Tensile Strength 42,000 psi, 95 BHN Brinell Hardness, 95 HRB Rockwell Hardness, Includes Material Certificate Material Certificate with Lot Number