Chemical Composition Base Element Fe (Iron) B (Boron) 0.0005 % (minimum) C (Carbon) 0.37 to 0.44 % Cr (Chromium) 0.3 to 0.7 % Cu (Copper) 0.35 % (maximum) Fe (Iron) 97 to 98.5 % (estimate) Mn (Manganese) 0.65 to 1.1 % Mo (Molybdenum) 0.06 % (maximum) P (Phosphorus) 0.025 % (maximum) S (Sulfur) 0.025 % (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 ASTM (USA) Description Cold-finished alloy steel bars. Designation 50B40H Specification Type Standard Specification ASTM A331-95 Specification Year 2000 Specification Status Obsolete Specification Status Notes withdrawn 2004 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed.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 Society for Testing and Materials (ASTM)
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Chemical Composition