Chemical Composition Base Element Fe (Iron) C (Carbon) 0.35 to 0.6 % Fe (Iron) 98.1 to 99.7 % (estimate) Mn (Manganese) 1.2 % (maximum) P (Phosphorus) 0.04 % (maximum) S (Sulfur) 0.05 % (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 485 MPa (minimum) Ultimate Tensile Strength 690 MPa (minimum) Elongation 12 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family Carbon Steel Alloy Group Medium-carbon steel Alloy Sub-Group 1043 Country USA Standards Body ASTM (USA) Description Heat-treated carbon steel joint bars for general use in standard railroad track Designation A49 Specification Type Standard Specification ASTM A49 Specification Year 2001 Specification Status Active Specification Status Notes active 2001 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