1018 Carbon Steel Plate Material Carbon Steel Material Grade 1018 Heat Treatable Yes Heat Treatment No Heat Treatment Mechanical Finish Mill Overall Length 6 ft Overall Width 9 in Thickness 1 in Thickness Tolerance -0.004 in Yield Strength 54 000 psi Fabrication Cold Finished Machinability 78 Percent Rockwell Hardness Not Rated Tensile Strength 80 000 psi Length Tolerance +/-6 in Width Tolerance -0.013 in Standards A108 ASTM A29 Appearance Unpolished Brinell Hardness 70