Chemical Composition Base Element Fe (Iron) C (Carbon) 0.15 to 0.25 % Cr (Chromium) 20 to 22 % Fe (Iron) 62.2 to 67.5 % (estimate) Mn (Manganese) 1 to 1.5 % N (Nitrogen) 0.15 to 0.25 % Ni (Nickel) 10.5 to 12.5 % P (Phosphorus) 0.045 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.7 to 1.25 % 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 430 MPa Ultimate Tensile Strength 820 MPa Elongation 26.2 % strain Other Information Material Class Ferrous Alloy Alloy Family High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels) Alloy Group Miscellaneous or unclassified Alloy Sub-Group Miscellaneous high-alloy steel Country USA Standards Body SAE (USA) Description Engine poppet valve Designation EV4 Specification Type Standard Specification SAE J775 Specification Year 1993 Specification Status Former designation 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 SAE, International (SAE) (SAE J)
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Chemical Composition