Chemical Composition Base Element Fe (Iron) B (Boron) 0.0005 to 0.003 % C (Carbon) 0.42 to 0.49 % Cr (Chromium) 0.3 to 0.6 % Cu (Copper) 0.2 % (maximum) Fe (Iron) 96.6 to 98.2 % (estimate) Mn (Manganese) 0.7 to 1.05 % Mo (Molybdenum) 0.08 to 0.15 % Ni (Nickel) 0.15 to 0.45 % 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 Miscellaneous or unclassified Alloy Sub-Group Boron steel Country USA Standards Body SP Manual (USA) Description Bar Designation 81B45H Specification Type Standard Specification SP Manual Specification Year 1996 Specification Status Withdrawn Specification Status Notes active 2005 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed.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