Cast Iron Rod, Material Cast Iron, Material Grade 80-55-06, Overall Length 12 in, Heat Treatable Heat Treatable, Heat Treatment Tempered, Mechanical Finish Mill, Outside Diameter 2 1/2 in, Outside Diameter Tolerance +0.088 in/+0.148 in, Yield Strength 55,000 psi, Fabrication Cast, Rockwell Hardness Not Rated, Brinell Hardness 187 BHN, Tensile Strength 80,000 psi, Machinability Not Available, Length Tolerance +/-1 in, Includes Material Certificate Material Certificate with Lot Number