Chemical Composition Base Element Fe (Iron) C (Carbon) 0.34 to 0.41 % Cr (Chromium) 0.9 to 1.2 % Fe (Iron) 97 to 98.1 % (estimate) Mn (Manganese) 0.6 to 0.9 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.02 to 0.04 % 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 510 MPa (minimum) Ultimate Tensile Strength 750 to 1150 MPa Elongation 11 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium steel Alloy Sub-Group 5135/5135H Country United Kingdom Standards Body BSI (United Kingdom) Description Semi-finished products, hot formed for the fabrication of machine parts; QT condition, mech props vary with size. Alternate Name 1.7038 Designation 37CrS4 Specification Type Standard Specification BS EN 10083-1 Specification Year 1991 Specification Status Active Specification Status Notes active 1991 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 British Standards Institution (BSI)
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Chemical Composition