Aluminum Plate, Material Aluminum, Material Grade 6061, Temper T6511, Plate, Overall Length 4 ft, Length Tolerance +0.125 in/0 in, Overall Width 8 in, Thickness 0.5 in, Fabrication Extruded, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 40,000 psi, Tensile Strength 42,000 psi, Brinell Hardness 93 BHN, Rockwell Hardness 59 HRB, Includes Material Certificate Material Certificate with Lot Number, Standards AMS QQ-A-200/8, Shape Plate, System of Measurement Inch