Chemical Composition Base Element Fe (Iron) C (Carbon) 0.2 % (maximum) Cr (Chromium) 23 to 30 % Fe (Iron) 67.8 to 77 % (estimate) Mn (Manganese) 1.5 % (maximum) Ni (Nickel) 0.5 % (maximum) Balance Fe (Iron) Other elements 0.10-0.25 N2 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 276 MPa Ultimate Tensile Strength 483 MPa Elongation 18 to 100 % strain Rockwell Hardness B scale 95 Other Information Material Class Ferrous Alloy Country USA Description Annealed: 70,000 TS min; 40,000 YS min; 18 El min; 95 HRB max. Good resistance to oxidation at 1500-2100 F, and resists attack by slag flue dust. Designation B&W CROLOY 27 (T/P 446) 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 Babcock & Wilcox (Power Generation Group)
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Chemical Composition