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6.15 How is ‘cast iron’ different from ‘pig iron”?

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The iron that obtains from the blast furnace is pig iron. it contains 4% carbon and many impurities like (s,P,Si,Mn)

Cast iron is obtained from pig iron by melting pig iron with scrap iron and coke using hot air blast. It contains slightly less carbon content around 3% and it is hard an brittle.

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