Carbon Steel Rod, Material Carbon Steel, Material Grade 1018, Overall Length 6 ft, Heat Treatable Heat Treatable, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Outside Diameter 4 in, Outside Diameter Tolerance +/-0.004 in, Yield Strength 54,000 psi, Fabrication Cold Rolled, Rockwell Hardness 71 HRB, Brinell Hardness 126 BHN, Tensile Strength 64,000 psi, Machinability 78 Percent, Length Tolerance +/-0.125 in, Includes Material Certificate Material Certificate with Lot Number