Chemical Composition Base Element Fe (Iron) C (Carbon) 0.05 % Cr (Chromium) 20 % Fe (Iron) 27.2 % (estimate) Mn (Manganese) 5 % Mo (Molybdenum) 2.25 % Nb (Niobium) 0.15 % Ni (Nickel) 45 % Si (Silicon) 0.4 % 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. Other Information Material Class Ferrous Alloy Country USA Description For heat exchanger and condenser tubing. Designation ARMCO 20-45-5 Specification Type Manufacturer's Specification Specification Status Obsolete Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Available forms Tube Similar Alloys Click here to find similar alloys Links Organizations Armco Inc.
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Chemical Composition