W1 Tool Steel Rod Material Tool Steel Material Grade W1 Overall Length 36 in Heat Treatable Yes Heat Treatment Water Hardened Mechanical Finish Precision Ground Outside Diameter 5/32 in Outside Diameter Tolerance +/-0.0005 in Yield Strength 55 000 psi Fabrication Hot Rolled Rockwell Hardness C28 Brinell Hardness 275 Tensile Strength 95 000 psi Machinability 100 Percent Length Tolerance +1/8 in/-0 in Includes Material Certificate Yes