61R2.25-12-A Aluminum Rod 6061, Aluminum, 6061, T6511, Rod, Outside Diameter 2 1/4 in, Outside Diameter Tolerance +/-0.024 in, 12 in Overall Length, Length Tolerance +/-1.000 in, Fabrication Extruded, Heat Treatment Hardened, Heat Treatable Yes, Mechanical Finish Mill, Yield Strength 40,000 psi, Tensile Strength 45,000 psi, 95 Brinell Hardness, Not Rated Rockwell Hardness, Includes Material Certificate Yes, Standards AMS-QQ-A-220, ASTM B211, Minimum Temperature -320 Degrees F