Chemical Composition Base Element Fe (Iron) C (Carbon) 0.17 to 0.22 % Cr (Chromium) 0.25 % (maximum) Cu (Copper) 0.35 % (maximum) Fe (Iron) 95.8 to 97.4 % (estimate) Mn (Manganese) 0.45 to 0.65 % Mo (Molybdenum) 0.2 to 0.3 % Ni (Nickel) 1.65 to 2 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.04 % (maximum) Si (Silicon) 0.15 to 0.35 % 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 229 (maximum) Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Nickel chromium molybdenum steel Alloy Sub-Group 4320/4320H Country USA Standards Body ASTM (USA) Description Alloy steel forgings for carburizing applications. Alternate Name 4620 Designation G46200 Specification Type Standard Specification ASTM A837/A837M Specification Year 2003 Specification Status Active Specification Status Notes active 2003 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