Chemical Composition Base Element Fe (Iron) C (Carbon) 0.2 to 0.6 % Cr (Chromium) 24 to 28 % Fe (Iron) 44.4 to 57.8 % (estimate) Mn (Manganese) 2 % (maximum) Ni (Nickel) 18 to 22 % Si (Silicon) 3 % (maximum) Balance Fe (Iron) Composition Note Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Mechanical Properties Yield Strength 324 to 345 MPa Ultimate Tensile Strength 517 to 538 MPa Elongation 10 to 17 % strain Brinell Hardness 187 Other Information Material Class Ferrous Alloy Country USA Description Cast and aged: 75,000-78,000 TS; 47,000-50,000 YS; 10-17 El; 187 HB; For corrosion and heat resistant castings; heat and corrosion resistant; ACI-HK. Designation AFCOLOY 25-20 Specification Type Manufacturer's Specification Specification Status Obsolete Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Available forms Casting Similar Alloys Click here to find similar alloys Links Organizations Atlas Foundry Co.
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Chemical Composition