Ferromolybdenum is an alloying component of steel, the alloy includes molybdenum, which occupies a little more than half of the volume and iron. Other impurities are also present in ferromolybdenum, but in very small amounts

A ferroalloy consisting of molybdenum and iron, usually containing 50 ~ 60% molybdenum, used as an alloy additive in steelmaking.Ferromolybdenum is an alloy of molybdenum and iron.

Its main use is as an additive for molybdenum in steelmaking.

The addition of molybdenum to the steel can make the steel have uniform fine grain structure and improve the hardenability of the steel, which is beneficial to eliminate the temper brittleness.

In high – speed steel, molybdenum can be used in place of some tungsten. Molybdenum, together with other alloying elements, is widely used in the production of stainless steels, heat resistant steels, acid resistant steels, tool steels and alloys with special physical properties.

Molybdenum is added to cast iron to increase its strength and wear resistance.