Chemical Composition Base Element Fe (Iron) C (Carbon) 1.22 to 1.3 % Co (Cobalt) 7.8 to 8.8 % Cr (Chromium) 3.7 to 4.2 % Fe (Iron) 70.6 to 73.8 % (estimate) Mn (Manganese) 0.2 to 0.4 % Mo (Molybdenum) 8 to 8.5 % P (Phosphorus) 0.03 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.4 to 0.65 % V (Vanadium) 3 to 3.3 % W (Tungsten) 1.9 to 2.2 % 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. Mechanical Properties Brinell Hardness 269 (maximum) Other Information Material Class Ferrous Alloy Alloy Family Tool Steel Alloy Group High-speed tool steel Alloy Sub-Group Molybdenum high-speed steel Country USA Standards Body ASTM (USA) Description Mo-type high-speed steels used to fabricate tools Designation M46 Specification Type Standard Specification ASTM A600-92a Specification Year 1999 Specification Status Active Specification Status Notes active 1999 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 American Society for Testing and Materials (ASTM)
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Chemical Composition