Chemical Composition Base Element Fe (Iron) C (Carbon) 0.3 to 0.4 % Cr (Chromium) 4.75 to 5.5 % Fe (Iron) 88.2 to 91.5 % (estimate) Mn (Manganese) 0.2 to 0.6 % Mo (Molybdenum) 1.25 to 1.75 % P (Phosphorus) 0.03 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.8 to 1.25 % V (Vanadium) 0.2 to 0.5 % W (Tungsten) 1 to 1.7 % 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 Hot-work tool steel Alloy Sub-Group Chromium hot-work steel Country USA Standards Body SP Manual (USA) Description Multiple forms, conditions, and finishes Designation H12 Specification Type Standard Specification SP Manual Specification Year 2000 Specification Status Active Specification Status Notes active 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 American Iron and Steel Institute (AISI)
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Chemical Composition