Chemical Composition
Base Element
C (Carbon)
0.25 to 0.35
%    
Cr (Chromium)
0.75 to 1
%    
Fe (Iron)
96.2 to 97.1
%    (estimate)
Mo (Molybdenum)
0.15 to 0.25
%    
Ni (Nickel)
1.75 to 2.25
%    
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
552 to 1250
MPa    
Ultimate Tensile Strength
689 to 1520
MPa    
Elongation
2 to 22
% strain    
Brinell Hardness
220 to 460
   
 
Other Information
Material Class
Country
USA
Description
Heat treated: 100,000-220,000 TS; 80,000-182,000 YS; 2-22 El; 14-55 RA; 220-460 HB; For dipper teeth, gears, rollers, wheels; resists abrasion and shock.
Designation
B-F N.C.M.
Specification Type
Specification Status
Source
Available forms
Similar Alloys
 
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