Chemical Composition Base Element Fe (Iron) C (Carbon) 0.85 to 0.95 % Cr (Chromium) 3 to 4 % Cu (Copper) 0.3 % (maximum) Fe (Iron) 79.6 to 85.5 % (estimate) Mn (Manganese) 0.4 to 0.7 % Mo (Molybdenum) 3.1 to 4 % Ni (Nickel) 0.4 % (maximum) P (Phosphorus) 0.04 % (maximum) S (Sulfur) 0.04 % (maximum) Si (Silicon) 0.2 to 0.4 % V (Vanadium) 2 to 2.6 % W (Tungsten) 5 to 7 % 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 Russia Standards Body GOST (Russia) Description Tool Designation 90KH4M4F2W6L Specification Type Standard Specification GOST 977 Specification Status Active 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 State Committee of the Russian Federation for Standardization and Metrology Gosstandart of Russia (GOST)
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Chemical Composition