Fran Scott describes some of the uses of steel and then finds out how it is made from iron that has been produced in a blast furnace. The carbon content is reduced by blasting heated oxygen onto ...

Kelly’s invention used chemical reactions to remove impurities in molten pig iron, a crude form of iron, and reduce the fuel requirements of the process. It was a key development that contributed to ...

The alloy is harder and stronger than the pure metal. Steel contains atoms of other elements as well as iron. These atoms have different sizes to iron atoms, so they distort the layers of atoms in ...