Chemical Composition Base Element Fe (Iron) C (Carbon) 0.2 to 0.28 % Cr (Chromium) 0.9 to 1.2 % Fe (Iron) 97 to 98 % (estimate) Mn (Manganese) 0.5 to 0.8 % Mo (Molybdenum) 0.2 to 0.35 % P (Phosphorus) 0.03 % S (Sulfur) 0.035 % 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 Yield Strength 235 to 363 MPa Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group 4118/ 4120/ 4121 Country India Standards Body BIS (India) Description Steels for fasteners for use 300 degrees C to 650 degrees C; hot tensile properties; <=100 mm ruling section Designation 24Cr4Mo3 Specification Type Standard Specification IS 14331 Specification Year 2001 Specification Status Active Specification Status Notes active 2001 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 Bureau of Indian Standards (BIS)
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Chemical Composition