Chemical Composition Base Element Fe (Iron) C (Carbon) 1.05 to 1.15 % Co (Cobalt) 7.75 to 8.75 % Cr (Chromium) 3.5 to 4.25 % Fe (Iron) 71.2 to 76.3 % (estimate) Mn (Manganese) 0.15 to 0.4 % Mo (Molybdenum) 9 to 10 % Ni (Nickel) 0.3 % (maximum) P (Phosphorus) 0.03 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.15 to 0.65 % V (Vanadium) 0.95 to 1.35 % W (Tungsten) 1.15 to 1.85 % Composition Note Fe is listed as a Base element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Other Information Material Class Ferrous Alloy Alloy Family Tool Steel Alloy Group High-speed tool steel Alloy Sub-Group Molybdenum high-speed steel Country China Standards Body SAC (China) Description Bar; HR/forged/CD; ann Designation W2Mo9Cr4VCo8 Specification Type Standard Specification GB 9943 Specification Year 1988 Specification Status Active Specification Status Notes Active in 2005 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Wrought Similar Alloys Click here to find similar alloys Links Organizations China State Bureau of Quality and Technical Supervision (CSBTS) (GB/JB/YB)
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Chemical Composition