Chemical Composition
Base Element
B (Boron)
0.0015 to 0.006
%    
C (Carbon)
0.07 to 0.15
%    
Cr (Chromium)
15.5 to 17.5
%    
Fe (Iron)
62.1 to 69
%    (estimate)
Mn (Manganese)
1.5
%  (maximum)  
Ni (Nickel)
12.5 to 14.5
%    
P (Phosphorus)
0.035
%  (maximum)  
S (Sulfur)
0.015
%  (maximum)  
Si (Silicon)
0.5
%  (maximum)  
Ti (Titanium)
0.4 to 0.7
%    
W (Tungsten)
2.5 to 3
%    
 



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