Chemical Composition
Base Element
C (Carbon)
1.05 to 1.5
%    
Co (Cobalt)
4.5 to 5.3
%    
Cr (Chromium)
3.5 to 4.5
%    
Fe (Iron)
74 to 79.4
%    (estimate)
Mn (Manganese)
0.4
%  (maximum)  
Mo (Molybdenum)
3.5 to 4.2
%    
P (Phosphorus)
0.03
%  (maximum)  
S (Sulfur)
0.03
%  (maximum)  
Si (Silicon)
0.45
%  (maximum)  
V (Vanadium)
1.7 to 2.2
%    
W (Tungsten)
6.4 to 7.4
%    
 



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