1018 Carbon Steel Rod, Material Carbon Steel, Material Grade 1018, Overall Length 36 in, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Outside Diameter 1/2 in, Outside Diameter Tolerance +0.0000 in/-0.0020 in, Yield Strength 55,000 psi, Fabrication Cold Finished, Rockwell Hardness Not Rated, Brinell Hardness 70, Tensile Strength 65,000 psi, Machinability 78 Percent, Length Tolerance +/-3.000 in, Includes Material Certificate Yes, Standards ASTM A108, ASTM A29