Carbon Equivalent: CE=


%C +
(%Mn +
 %Si ) +
(%Cr +
%Mo + %V ) +
(%Cu +
 %Ni )
6 5 15

Carbon
Equivalent 		Weldability
Up to 0.35 Excellent
0.36–0.40 Very good
0.41–0.45 Good
0.46–0.50 Fair
Over 0.50 Poor