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-1400 – steel

-1400 – steel

Iron can be hardened if it is reheated in a furnace with some charcoal, allowing carbon to transfer from the charcoal to the iron. The hot metal alloy is then quenched in water and the result is steel, which is just as workable as iron but will hold a sharp edge longer.

PRECURSOR:
iron age

SUCCESSOR:
blast furnace

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