Question
How is ‘Cast iron’ different from ‘pig iron’?
Solution
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Cast iron |
Pig iron |
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1.It is obtained by melting pig iron with scrap iron and coke using hot air blast. It contains about 3% carbon. |
1. It is obtained from the blast furnace. It contains about 4% carbon and other impurities like S, P, Si, and Mn. |
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2. It has a slightly lower melting point than pig iron. |
2. It has slightly higher melting point than cast iron. |
