D2 Tool Steel Rectangular Bar Bar Material Tool Steel Material Grade D2 Thickness 0.0625 in Thickness Tolerance +/-0.001 in Overall Length 36 in Overall Width 2 in Heat Treatable Yes Heat Treatment Air Hardened Mechanical Finish Precision Ground Yield Strength 68 000 psi Tensile Strength 110 000 psi Brinell Hardness 220 to 255 Rockwell Hardness B97 to B102 Standards ASTM A681 SAE J437 Includes Material Certificate Yes Length Tolerance +0.25 in/+0.5 in Shape Rectangular Bar