Chemical Composition Base Element Fe (Iron) C (Carbon) 0.07 % (maximum) Cr (Chromium) 0.45 to 0.75 % Cu (Copper) 1.45 to 1.75 % Fe (Iron) 91.5 to 93.4 % (estimate) Mn (Manganese) 0.75 to 1.15 % Mo (Molybdenum) 0.55 to 0.65 % Nb (Niobium) 0.02 to 0.06 % Ni (Nickel) 3.35 to 3.65 % P (Phosphorus) 0.015 % (maximum) S (Sulfur) 0.005 % (maximum) Si (Silicon) 0.4 % (maximum) Balance Fe (Iron) Composition Note Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Mechanical Properties Yield Strength 621 to 827 MPa Ultimate Tensile Strength 689 to 896 MPa Other Information Material Class Ferrous Alloy Country USA Description Quenched and precipitation heat treated. 100,000-130,000 psi TS; 90,000-120,000 psi YS. Designation SPARTAN III Specification Type Manufacturer's Specification Specification Status Active Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Available forms Wrought Similar Alloys Click here to find similar alloys Links Organizations Bethlehem Lukens Plate
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Chemical Composition