A2 Tool Steel Rectangular Bar Material Tool Steel Material Grade A2 Thickness 1 in Thickness Tolerance +0.015 in Overall Length 18 in Overall Width 2 in Heat Treatable Yes Heat Treatment Air Hardened Mechanical Finish Precision Ground Yield Strength 50 000 psi Tensile Strength 100 000 psi Brinell Hardness 200 to 235 Rockwell Hardness B94 to B99 Standards ASTM A681 SAE J437 Includes Material Certificate Yes Length Tolerance +0.125 in/+0.25 in Shape Rectangular Bar