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Chromium alloy steel, B&W CROLOY 1/2 (T/P-2) (Babcock & Wilcox)
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Chemical Composition
Base Element
Fe (Iron)
C (Carbon)
0.1 to 0.2
%
Cr (Chromium)
0.5 to 0.81
%
Fe (Iron)
97.4 to 98.6
%
(estimate)
Mn (Manganese)
0.3 to 0.61
%
Mo (Molybdenum)
0.44 to 0.65
%
Si (Silicon)
0.1 to 0.3
%
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
4.32e6
lbf/ft^2
Ultimate Tensile Strength
8.65e6
lbf/ft^2
Elongation
30 to 100
% strain
Rockwell Hardness B scale
85
Other Information
Material Class
Ferrous Alloy
Country
USA
Description
Annealed: 60,000 TS min; 30,000 YS min; 30 El min; 85 HRB max. Superior to CARBON MOLY for creep strength and graphitization; for high temperature steam piping. Oxidation resistant to 1075 F in air.
Designation
B&W CROLOY 1/2 (T/P-2)
Specification Type
Manufacturer's Specification
Specification Status
Active
Source
Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000
Available forms
Pipe
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Organizations
Babcock & Wilcox (Power Generation Group)
No warranty is given for the accuracy of these data
Copyright © 2024 ASM International®
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