Chemical Composition Base Element Fe (Iron) C (Carbon) 0.37 to 0.42 % Cr (Chromium) 0.8 to 1.2 % Fe (Iron) 96.7 to 97.7 % (estimate) Mn (Manganese) 0.75 to 1 % Mo (Molybdenum) 0.15 to 0.25 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.035 % (maximum) Si (Silicon) 0.2 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. Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group 4140/ 4142 Country Italy Standards Body UNI (Italy) Description Wear resistant Designation G40CrMo4 Specification Type Standard Specification UNI 3160 Specification Year 1983 Specification Status Active Specification Status Notes 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 Ente Nazionale Italiano di Unificazione (UNI) (Italian National Standardization Office)
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Chemical Composition