Aluminum Rod, Aluminum, 6061, T6511, Rod, Outside Diameter 4 in, Outside Diameter Tolerance +/-0.012 in, 6 ft Overall Length, Length Tolerance +0.125 in/0 in, Fabrication Extruded, Heat Treatment Tempered, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 40,000 psi, Tensile Strength 42,000 psi, 93 BHN Brinell Hardness, 59 HRB Rockwell Hardness, Includes Material Certificate Material Certificate with Lot Number, Standards AMS QQA200/8, Minimum Temperature 1,080 Degrees F