Chemical Composition Base Element Fe (Iron) C (Carbon) 0.3 to 0.5 % Cr (Chromium) 24 to 27 % Fe (Iron) 45.4 to 55.7 % (estimate) Mn (Manganese) 2 % (maximum) Mo (Molybdenum) 0.5 % (maximum) Ni (Nickel) 19 to 22 % P (Phosphorus) 0.04 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 1 to 2.5 % 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 4.59e6 lbf/ft^2 (minimum) Ultimate Tensile Strength 9.4e6 lbf/ft^2 (minimum) Elongation 6 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels) Alloy Group Austenitic stainless steel Alloy Sub-Group CK/ HH/ HK grades Country International Standards Body ISO (International) Description Cast steel for heat-resistant service. Designation GX40CrNiSi25-20 Specification Type Standard Specification ISO 11973 Specification Year 1999 Specification Status Active Specification Status Notes active 1999 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Casting Similar Alloys Click here to find similar alloys Links Organizations International Organization for Standardization (ISO)
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Chemical Composition