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Maraging steel, ALMAR 18 (250) (AL Tech Specialty Steel Corp.)
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Chemical Composition
Base Element
Fe (Iron)
Al (Aluminum)
0.05 to 15
%
B (Boron)
0.003
%
C (Carbon)
0.03
% (maximum)
Co (Cobalt)
7 to 8.5
%
Fe (Iron)
51.8 to 71
%
(estimate)
Mo (Molybdenum)
4.6 to 5.2
%
Ni (Nickel)
17 to 19
%
Ti (Titanium)
0.3 to 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
3.34e7
lbf/ft^2
Ultimate Tensile Strength
3.51e7
lbf/ft^2
Elongation
12
% strain
Rockwell Hardness C scale
48
Other Information
Material Class
Ferrous Alloy
Country
USA
Description
Maraged: 243,000 TS; 232,000 YS; 12 El; 57 RA; 48 HRC; For fuel rocket cases, aircraft landing gears, missile and aircraft components. Maraging steel, high strength, ductility and toughness.
Designation
ALMAR 18 (250)
Specification Type
Manufacturer's Specification
Specification Status
Obsolete
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
AL Tech Specialty Steel Corp.
No warranty is given for the accuracy of these data
Copyright © 2024 ASM International®
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