Chemical Composition Base Element Fe (Iron) C (Carbon) 0.28 % (maximum) Cr (Chromium) 0.75 to 2 % Fe (Iron) 91.9 to 96.8 % (estimate) Mn (Manganese) 0.7 % (maximum) Mo (Molybdenum) 0.2 to 0.7 % Ni (Nickel) 2 to 4 % P (Phosphorus) 0.012 % (maximum) S (Sulfur) 0.015 % (maximum) Si (Silicon) 0.15 to 0.35 % V (Vanadium) 0.05 % (minimum) 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 620 to 760 MPa Ultimate Tensile Strength 725 MPa (minimum) Elongation 19 % strain (minimum) 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 ASTM (USA) Description Vacuum-treated alloy steel forgings intended for use as turbine rotor disks and wheels. Designation Class 2 Specification Type Standard Specification ASTM A471 Specification Year 2002 Specification Status Active Specification Status Notes active 2002 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 American Society for Testing and Materials (ASTM)
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Chemical Composition

Base Element

Fe (Iron)