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How is 'cast iron ' different from 'pig ...

How is 'cast iron ' different from 'pig iron'?

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Pig iron : The iron obtained from blast fur- khown as pig tron.and cast into variety of shapes. Cast iron: It is different from pig iron and is made by melting pig iron with scrap iron and coke using hot air blast. It has slightly lower carbon content (about 3 % ) and is extremely hard and brittle.
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