Chemical Composition Base Element Fe (Iron) C (Carbon) 0.05 % (maximum) Cr (Chromium) 11.5 to 14 % Fe (Iron) 77.8 to 84 % (estimate) Mn (Manganese) 0.5 to 1 % Mo (Molybdenum) 0.5 to 1 % Ni (Nickel) 3.5 to 5.5 % P (Phosphorus) 0.03 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.6 % (maximum) 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 MPa (minimum) Ultimate Tensile Strength 790 MPa (minimum) Elongation 14 % strain (minimum) Brinell Hardness 295 (minimum) Other Information Material Class Ferrous Alloy Alloy Family High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels) Alloy Group Martensitic stainless steel Alloy Sub-Group Miscellaneous martensitic steel Country South Korea Standards Body KS (South Korea) Description Martensitic stainless forgings for pressure vessels. Designation STS F 6NM Specification Type Standard Specification KS D 4115 Specification Year 2001 Specification Status Active Specification Status Notes Active Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Wrought Similar Alloys Click here to find similar alloys
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Chemical Composition