Keys to the Past

Glossary

Cast iron

Iron (Fe) that has been smelted from a blast furnace to temperatures so high that the ironstone has passed its melting point (15400C) that it has turned to liquid. It contains some carbon from the fuel used. Whilst at temperature it can be run into moulds called pigs for transportation to a foundry. This is brittle. It may be made into steel through cementation.

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