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) 0.035 % (maximum) Si (Silicon) 0.1 to 0.4 % 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 1.07e7 lbf/ft^2 (minimum) Ultimate Tensile Strength 1.57e7 to 2.4e7 lbf/ft^2 Elongation 11 % strain (minimum) Brinell Hardness 235 (maximum) Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium steel Alloy Sub-Group 5135/5135H Country International Standards Body ISO (International) Description Direct-hardened wrought steel for black product machine parts; QT, mech props vary with diameter; ann to max hardness Designation 37Cr4 Specification Type Standard Specification ISO 683-1 Specification Year 1987 Specification Status Active Specification Status Notes active 1987 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