Aluminum Plate 6061, Material Aluminum, Material Grade 6061, Temper T6511, Plate, Overall Length 24 in, Length Tolerance +/-2.000 in, Overall Width 12 in, Width Tolerance +/-0.016 in, Thickness 0.25 in, Thickness Tolerance +/-0.008 in, Fabrication Extruded, Heat Treatment Pre-Hardened, Heat Treatable Yes, Mechanical Finish Mill, Yield Strength 37,000 psi, Tensile Strength 42,000 psi, Brinell Hardness 95, Rockwell Hardness B95, Includes Material Certificate Yes