Aluminum Rectangular Bar, Aluminum, 6063, T52, Rectangular, 8 ft Overall Length, Length Tolerance +/-1 in, 3/4 in Overall Width, Width Tolerance +/-0.01 in, 0.25 in Thickness, Thickness Tolerance +/-0.008 in, Fabrication Extruded, Heat Treatment Tempered, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 21,000 psi, Tensile Strength 27,000 psi, 60 BHN Brinell Hardness, 65 HRB Rockwell Hardness, Includes Material Certificate No Certificates Included, Standards ASTM B221