Chemical Composition Base Element Fe (Iron) As (Arsenic) 0.02 % (maximum) C (Carbon) 0.25 to 0.35 % Cr (Chromium) 0.9 to 1.5 % Fe (Iron) 94.2 to 97.5 % (estimate) Mn (Manganese) 1 % (maximum) Mo (Molybdenum) 1 to 1.5 % Ni (Nickel) 0.75 % (maximum) P (Phosphorus) 0.012 % (maximum) S (Sulfur) 0.015 % (maximum) Sb (Antimony) 0.01 % (maximum) Si (Silicon) 0.15 to 0.35 % Sn (Tin) 0.02 % (maximum) V (Vanadium) 0.2 to 0.3 % 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 1.22e7 lbf/ft^2 Ultimate Tensile Strength 1.51e7 to 1.8e7 lbf/ft^2 Elongation 17 % strain Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group Chromium molybdenum vanadium steel Country USA Standards Body DoD (USA) Description Forging for steam turbines; supersedes MIL-S-860B(66) Designation Grade F Specification Type Standard Specification DoD-F-24669/8 Specification Year 1991 Specification Status Obsolete Specification Status Notes Inactive 1999 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 Department of Defense (MIL/DoD-F/FED QQ)
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Chemical Composition

Base Element

Fe (Iron)