Steels are alloys of iron, carbon, and other metals and non-metals. The composition of the steel is adjusted so that it has the precise properties needed. Steels can be repeatedly recycled without any loss of performance. There are two main processes used to make steel. The Basic Oxygen Steelmaking Process, which is used for the majority of steel production, uses iron freshly produced from the blast furnace together with some scrap steel. The Electric Arc Furnace Process uses scrap steel only.