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It depends on what you want to use it for. On the Moh's scale, steel is somewhere between 4 and 4.5, whereas iron is between 6 and 7. In swords, both iron and steel kinds have appeared, but steel is slightly better than iron due to its strength-to-weight ratio and its flexibility. Keep in mind, steel--unlike iron--is made of different metals to improve its strength. For piping, steel would be better (but not the first choice among other materials to use).

Steel is also more resistant to rust, than iron, and the weldability of steel is better than iron.

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15y ago

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