Chemical Composition
Base Element
Al (Aluminum)
0.05 to 0.15
%    
B (Boron)
0.003
%    
C (Carbon)
0.03
%  (maximum)  
Co (Cobalt)
8.5 to 9.5
%    
Fe (Iron)
58.1 to 68.3
%    (estimate)
Mo (Molybdenum)
4.6 to 5.2
%    
Ni (Nickel)
18 to 19
%    
Ti (Titanium)
0.5 to 8
%    
Zr (Zirconium)
0.02
%    
Balance
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
2010
MPa    
Ultimate Tensile Strength
2030
MPa    
Elongation
11.5
% strain    
Rockwell Hardness C scale
48 to 50
   
 
Other Information
Material Class
Country
USA
Description
Maraged: 295,000 TS; 292,000 YS; 11.5 El; 59 RA, 48-50 HRC; For rocket cases, aircraft landing gears, missile and aircraft components. Maraging steel, high strength, ductility and toughness.
Designation
ALMAR 18 (300)
Specification Type
Specification Status
Source
Available forms
Similar Alloys
 
Links
 



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