Range attributes 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 % Discrete attributes ~Checking Status Not verified - Original build Date Last Checked Thursday, October 17, 2013 Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group 4140/ 4142 Available forms Wrought Base Element Fe (Iron) Country Italy Material Class Ferrous Alloy Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Specification Status Active Specification Type Standard Standards Body UNI (Italy) Short text attributes Composition Note_old 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. Country* Italy Description_old Wear resistant Designation G40CrMo4 Specification UNI 3160 Specification Status Notes active Long text attributes 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. Description Wear resistant Hyperlink attributes Similar Alloys Click here to find similar alloys Integer attributes Specification Year 1983 Further Information Organizations Ente Nazionale Italiano di Unificazione (UNI) (Italian National Standardization Office)
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Range attributes

C (Carbon)

0.37 to 0.42