Chemical Composition
Base Element
C (Carbon)
0.77 to 0.87
%    
Cr (Chromium)
3.5 to 4.5
%    
Fe (Iron)
81.2 to 85.4
%    (estimate)
Mn (Manganese)
0.4
%  (maximum)  
Mo (Molybdenum)
8 to 9
%    
P (Phosphorus)
0.07
%  (maximum)  
S (Sulfur)
0.06
%  (maximum)  
Si (Silicon)
0.5
%  (maximum)  
V (Vanadium)
0.9 to 1.4
%    
W (Tungsten)
1.4 to 2
%    
 



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