Chemical Composition Base Element Fe (Iron) B (Boron) 0.001 to 0.005 % C (Carbon) 0.12 to 0.21 % Cr (Chromium) 0.85 to 1.2 % Fe (Iron) 95.4 to 96.7 % (estimate) Mn (Manganese) 0.45 to 0.7 % Mo (Molybdenum) 0.45 to 0.6 % Ni (Nickel) 1.2 to 1.5 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.035 % (maximum) Si (Silicon) 0.2 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. Mechanical Properties Yield Strength 620 MPa (minimum) Ultimate Tensile Strength 725 to 930 MPa Elongation 14 % strain (minimum) 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 High-strength alloy steel plates for use in fusion welded boilers and other pressure vessels; QT, t<=100 mm. Designation Grade P Specification Type Standard Specification ASTM A517/A517M-93 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