It is the purest form of iron; although it may contain traces of carbon. It is usually made by "puddling process" and besides iron contains a small quantity of slag. It is very costly and its use has been almost totally replaced by cheaper steels. However, for some components like chains-links and chain-hooks wrought iron is still the preferred raw materials. In old havelis/houses, one can still see iron railings and gates made of wrought iron.
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