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Nickel-chromium-molybdenum alloy steel, BIRDSBORO-40A5 (Birdsboro Corp.)
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Chemical Composition
Base Element
Fe (Iron)
C (Carbon)
0.45
% (maximum)
Cr (Chromium)
0.5
%
Fe (Iron)
97.1 to 97.5
%
(estimate)
Mn (Manganese)
0.95
%
Mo (Molybdenum)
0.5
%
Ni (Nickel)
0.5
%
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
1.37e7 to 1.8e7
lbf/ft^2
Ultimate Tensile Strength
1.73e7 to 2.15e7
lbf/ft^2
Elongation
9 to 14
% strain
Brinell Hardness
290 to 350
Other Information
Material Class
Ferrous Alloy
Country
USA
Description
Cast: 120,000-150,000 TS; 95,000-125,000 YP; 9-14 El; 22-30 RA; 290-350 HB; For general and structural castings, shafts, gears, housings. High strength, shock resistant. AISI 8640 modified.
Designation
BIRDSBORO-40A5
Specification Type
Manufacturer's Specification
Specification Status
Obsolete
Source
Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000
Available forms
Casting
,
Shaft
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Organizations
Birdsboro Corp.
No warranty is given for the accuracy of these data
Copyright © 2024 ASM International®
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