Ferromolybdenum

Ferro molybdenum is an important iron-molybdenum metal alloy, with a molybdenum content of 60–75% It is the main source for molybdenum alloying of HSLA steel.

Production

The alloy is produced by heating a mixture of molybdenum(VI) oxide MoO₃, aluminium, and iron. The oxide and the aluminium combine via an aluminothermic reaction to give molybdenum in situ. The ferromolybdenum can be purified by electron [beam melting] or used as it is. For alloying with steel the ferromolybdenum is added to molten steel before casting.