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How to Calculate the Carbon Equivalent of Steel 
Written by C. L. Easey 
A steel weight that is used when building a structure is a type of reinforcement will you need to weld to obtain adequate structural support. However, before welding reinforcing steel you will need to calculate its carbon equivalent (C.E.). This is the hardenability of the parent metal and dictates its weldability. To do this you need to know the elemental content of the reinforcing steel. Step 1 Write out the equation to use for calculating the reinforcing steel's carbon equivalent. This is expressed as βCE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15.β Step 2 Input the percentage of copper in the reinforcing steel for βCβ into the equation. Input the percentage of manganese in the reinforcing steel for βMnβ into the equation. Step 3 Input the percentage of chromium for βCrβ into the equation. Input the percentage of molybdenum for βMoβ into the equation. Input the percentage of Vanadium for βVβ into the equation. Step 4 Input the percentage of nickel in the reinforcing steel for βNiβ into the equation. Input the percentage of copper for βCuβ into the equation. Step 5 Solve the equation to obtain the carbon equivalent of the steel. You can then weld your reinforcing steel to the structure if the carbon equivalent is adequate. Tips Divide the percentage of the element by 100 to obtain a decimal. An example of the carbon equivalent of reinforcing steel is 0.45 percent.
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