Chemical Composition Base Element Fe (Iron) C (Carbon) 0.15 % (maximum) Cr (Chromium) 0.4 % (maximum) Cu (Copper) 0.5 % (maximum) Fe (Iron) 93.2 to 96.5 % (estimate) Mn (Manganese) 0.5 to 0.8 % Mo (Molybdenum) 0.25 % (maximum) Ni (Nickel) 3 to 4 % P (Phosphorus) 0.025 % (maximum) S (Sulfur) 0.025 % (maximum) Si (Silicon) 0.6 % (maximum) V (Vanadium) 0.03 % (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 275 MPa (minimum) Ultimate Tensile Strength 485 MPa (minimum) Elongation 24 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels) Alloy Group Nickel steel and nickel low-alloy steel Alloy Sub-Group Nickel steel casting Country USA Standards Body ASTM (USA) Description Alloy steel castings for pressure-containing applications for petroleum and gas pipelines at low-ambient temps; norm and tempered or QT Designation B3Q Specification Type Standard Specification ASTM A757/A757M-00 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 Casting 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)