Ferroaluminum

Ferroaluminum is a master alloy consisting primarily of iron and aluminum. It is produced by the aluminothermic reduction of alumina in the presence of iron. The typical composition of ferroaluminum varies, but it generally contains between 35% and 50% aluminum, with the remainder being iron. Other elements may be present in small quantities as impurities.

The primary use of ferroaluminum is as an alloying addition in the production of steels and cast irons. It acts as a deoxidizer and a scavenger of nitrogen and other impurities in molten metal. The addition of ferroaluminum can improve the mechanical properties of the resulting metal, such as tensile strength and ductility. It is also used in the production of non-ferrous alloys.

In steelmaking, ferroaluminum is particularly valued for its ability to reduce the oxygen content of the molten steel, preventing the formation of undesirable oxides that can weaken the final product. Its use helps to achieve cleaner, more consistent steel with improved performance characteristics. The exact grade and composition of ferroaluminum used depend on the specific application and the desired properties of the final alloy.