Cast Iron Rod, Material Cast Iron, Material Grade CL 40, Overall Length 36 in, Heat Treatable Heat Treatable, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Outside Diameter 4 1/2 in, Outside Diameter Tolerance +0.092 in/+0.188 in, Yield Strength 42,500 psi, Fabrication Cast, Rockwell Hardness Not Rated, Brinell Hardness 197 BHN, Tensile Strength 40,000 psi, Machinability Not Available, Length Tolerance +/-3 in, Includes Material Certificate No Certificates Included