Chemical Composition Base Element Fe (Iron) B (Boron) 0.002 % (maximum) C (Carbon) 0.015 to 0.03 % Co (Cobalt) 0.25 % (maximum) Cr (Chromium) 17 to 18 % Cu (Copper) 0.05 % (maximum) Fe (Iron) 63.8 to 67 % (estimate) Mn (Manganese) 1.6 to 2 % Mo (Molybdenum) 2.3 to 2.7 % N (Nitrogen) 0.06 to 0.08 % Ni (Nickel) 12 to 12.5 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.02 % (maximum) Si (Silicon) 0.5 % (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. Other Information Material Class Ferrous Alloy Country Germany Description SEL 90; WNr. 1.4909. Designation CRONIDUR 4909 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 Krupp Stahl AG
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Chemical Composition