Chemical Composition Base Element Fe (Iron) C (Carbon) 0.38 to 0.45 % Cr (Chromium) 0.9 to 1.2 % Fe (Iron) 96.7 to 98 % (estimate) Mn (Manganese) 0.6 to 0.9 % Mo (Molybdenum) 0.15 to 0.3 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.035 % (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 Yield Strength 650 MPa (minimum) Ultimate Tensile Strength 900 to 1300 MPa Elongation 10 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group 4140/ 4142 Country International Standards Body ISO (International) Description Cold-heading/cold-extruding steel wire rods, wire or bars for quenching and tempering; d=2-100 mm; mech props vary with diameter. Alternate Name formerly C32 Designation 42CrMo4E Specification Type Standard Specification ISO 4954 Specification Year 1993 Specification Status Active Specification Status Notes active 1993 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