Chemical Composition Base Element Fe (Iron) Al (Aluminum) 0.05 % (maximum) C (Carbon) 0.17 to 0.23 % Cr (Chromium) 0.35 to 0.65 % Cu (Copper) 0.3 % (maximum) Fe (Iron) 96.4 to 98.3 % (estimate) Mn (Manganese) 0.6 to 0.95 % Mo (Molybdenum) 0.15 to 0.25 % Ni (Nickel) 0.4 to 0.7 % P (Phosphorus) 0.025 % (maximum) S (Sulfur) 0.015 % (maximum) Si (Silicon) 0.4 % (maximum) 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 170 (maximum) Other Information Material Class Ferrous Alloy Alloy Family Tool Steel Alloy Group Miscellaneous or unclassified Alloy Sub-Group Miscellaneous tool steel Country International Standards Body ISO (International) Description Wrought case-hardening ball and roller bearing steel; ann to achieve spheroidized carbides. Designation 20NiCrMo2 Specification Type Standard Specification ISO 683-17 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 International Organization for Standardization (ISO)
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Chemical Composition