Chemical Composition Base Element Fe (Iron) C (Carbon) 0.39 to 0.44 % Cr (Chromium) 0.7 to 0.95 % Fe (Iron) 93.3 to 94.8 % (estimate) Mn (Manganese) 0.6 to 0.9 % Mo (Molybdenum) 0.3 to 0.45 % Ni (Nickel) 1.65 to 2 % P (Phosphorus) 0.01 % (maximum) S (Sulfur) 0.01 % (maximum) Si (Silicon) 1.5 to 1.8 % V (Vanadium) 0.05 to 0.1 % 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. Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Silicon steel Alloy Sub-Group Chromium silicon steel Country United Kingdom Standards Body BSI (United Kingdom) Description Ni-Si-Cr-Mo-V steel billets, bars, and forgings. Designation S-155A Specification Type Standard Specification BS S 155 Specification Status Active Specification Status Notes active 1976 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 British Standards Institution (BSI)
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Chemical Composition