Aluminum fluoride is primarily used in the production of aluminum metal through the Hall-HÉroult process. It serves as a source of fluoride ions, helping to lower the melting point of alumina in electrolytic cells, which improves energy efficiency during aluminum smelting. It is also used in the manufacture of fluorinated pharmaceuticals and agrochemicals as a fluorinating agent. In the glass and ceramic industries, aluminum fluoride modifies the melting behavior and improves product durability. Additionally, it finds use in the production of synthetic cryolite and other aluminum-based fluorides used in various industrial applications.