Chemical Composition Base Element Fe (Iron) C (Carbon) 0.38 to 0.43 % Cr (Chromium) 0.25 to 0.4 % Fe (Iron) 97 to 98 % (estimate) Mn (Manganese) 0.95 to 1.25 % Mo (Molybdenum) 0.05 to 0.1 % Ni (Nickel) 0.2 to 0.4 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.04 % (maximum) Si (Silicon) 0.15 to 0.35 % 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 Nickel chromium molybdenum steel Alloy Sub-Group 8640/ 8740 Country USA Standards Body SP Manual (USA) Description Bar Designation EX 52 Specification Type Standard Specification SP Manual Specification Year 1996 Specification Status Withdrawn Specification Status Notes active 2005 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed.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 Iron and Steel Institute (AISI)
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Chemical Composition