Which among the following has the least percentage of carbon in it?
Pig iron
Cast iron
Wrought iron
Haematite
Wrought iron is the purest form of iron and contains least amount of carbon
Cast iron or pig iron contains 2.5 - 4% Carbon. Steel contains 0.2 - 0.5 % Carbon
While Wrought iron contains only 0.12 -0.25 % Carbon.
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