A2 Tool Steel Rectangular Bar Material Tool Steel Material Grade A2 Thickness 0.5 in Thickness Tolerance +/-0.001 in Overall Length 18 in Overall Width 1 1/2 in Fabrication Hot Rolled Heat Treatable Yes Heat Treatment Air Hardened Mechanical Finish Precision Ground Yield Strength 65 000 psi Tensile Strength 103 000 psi Brinell Hardness 200 to 235 Rockwell Hardness C24 Standards AISI A-2 ASTM A681-08 FEDERAL QQT 570 REV C SAE J437 UNS T30102 Includes Material Certificate Yes