Chemical Composition
Base Element
C (Carbon)
0.25
%  (maximum)  
Fe (Iron)
98.5 to 98.8
%    (estimate)
Mn (Manganese)
1
%    
Mo (Molybdenum)
0.25
%    
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
241 to 345
MPa    
Ultimate Tensile Strength
448 to 552
MPa    
Elongation
24 to 30
% strain    
 
Other Information
Material Class
Country
USA
Description
Cast: 65,000-80,000 TS; 35,000-50,000 YP; 24-30 El; 35-50 RA. For general and structural applications, gears, shafts, housings. AISI 4024 modified. Tough.
Designation
BIRDSBORO-CMO
Specification Type
Specification Status
Source
Available forms
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