LC Tool Steel Plate Brinell Hardness 168 Fabrication Hot Rolled Heat Treatable Yes Heat Treatment Tempered Includes Material Certificate Yes Length Tolerance +0.1875 in/+0.375 in Material Tool Steel Material Grade LC Mechanical Finish Precision Ground Overall Length 24 in Overall Width 7 in Rockwell Hardness B71 Shape Rectangular Bar Standards AISI C-1018 ASTM A1018 FEDERAL 635 UNS G10180 System of Measurement Inch Tensile Strength 65 000 psi Thickness 1 in