Ferroalloy refers to various alloys of iron with a high proportion of one or more other element manganese or silicon for example. It is used in the production of steels and alloys as a raw material. The main ferroalloys are: FeAl – ferroaluminum FeB – ferroboron – 12–20% of boron max. 3% of silicon max. 2% aluminium max. 1% of carbon FeCe – ferrocerium FeCr – ferrochromium FeMg – ferromagnesium FeMn – ferromanganese FeMo – ferromolybdenum – min. 60% Mo max. 1% Si max.