Just as there is a Carbon Equivalent (CEQ) calculation for carbon steels, there is also one for low alloy steels, generally with carbon <=0.17%, typical of microalloyed linepipe steels. The method used to calculate CEQ values for low alloy steels is the Ito-Bessyo Formula.  The carbon equivalent number for carbon steel indicates the weldability of the steel, with weldability issues possible for values greater than 0.26%.

% Carbon :

% Manganese :

% Chromium :

% Molybdenum :

% Vanadium :

% Nickel :

% Silicon :

% Copper :

% Boron :

Ito-Bessyo Carbon Equivalent Number :

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