Chemical Composition Base Element Fe (Iron) Al (Aluminum) 0.01 to 0.04 % C (Carbon) 0.11 % (maximum) Cr (Chromium) 0.45 to 0.7 % Cu (Copper) 0.25 to 0.4 % Fe (Iron) 96.3 to 97.6 % (estimate) Mn (Manganese) 1.1 to 1.35 % Mo (Molybdenum) 0.02 to 0.08 % N (Nitrogen) 0.015 % (maximum) Ni (Nickel) 0.25 to 0.4 % P (Phosphorus) 0.02 % (maximum) S (Sulfur) 0.006 % (maximum) Si (Silicon) 0.3 to 0.5 % V (Vanadium) 0.04 to 0.08 % 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 345 MPa (minimum) Ultimate Tensile Strength 485 MPa (minimum) Elongation 18 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Nickel chromium molybdenum steel Alloy Sub-Group Miscellaneous nickel chromium molybdenum steel Country USA Standards Body ASTM (USA) Description Carbon and HSLA steel structural shapes, plates and bars for use in bridges; El depends on thickness. Designation Grade HPS 50W Specification Type Standard Specification ASTM A709/A709M Specification Year 2004 Specification Status Active Specification Status Notes active 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

Base Element

Fe (Iron)