Aluminum Plate, Material Aluminum, Material Grade 6061, Temper T651, Plate, Overall Length 18 in, Length Tolerance +0.125 in/0 in, Overall Width 18 in, Thickness 1.75 in, Heat Treatment No Heat Treatment, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 39,000 psi, Tensile Strength 46,000 psi, Brinell Hardness 93 BHN, Rockwell Hardness 60, Includes Material Certificate Material Certificate with Lot Number, Standards ASTM B209, Shape Plate, System of Measurement Inch