1018 Carbon Steel Rectangular Bar Material Carbon Steel Material Grade 1018 Thickness 0.75 in Thickness Tolerance +/-0.001 in Overall Length 24 in Overall Width 5 in Fabrication Cold Finished Heat Treatable Yes Heat Treatment No Heat Treatment Mechanical Finish Precision Ground Yield Strength 53 700 psi Tensile Strength 63 800 psi Brinell Hardness 126 Rockwell Hardness 71 Machinability 78 Percent Standards ASTM A681 Appearance Metallic Includes Material Certificate Yes