Tool Steel Rod, Material Tool Steel, Material Grade D2, Overall Length 6 ft, Heat Treatable Heat Treatable, Heat Treatment Air-Hardened, Mechanical Finish Mill, Outside Diameter 1 3/4 in, Outside Diameter Tolerance +0.01 in/+0.041 in, Yield Strength 50,000 psi, Fabrication Hot Rolled, Rockwell Hardness 60 HRC, Brinell Hardness 217 BHN, Tensile Strength Not Rated, Machinability 27 Percent, Length Tolerance +/-6 in, Includes Material Certificate Material Certificate with Lot Number