Ferromolybdenum is an iron-molybdenum alloy which is used in steel alloys, cast iron and other alloys. The molybdenum contained in ferromolybdenum increases the quality of steel: durability, hardness capacity, and contributes to maintaining the qualitative features of steel in high temperature, protects from corrosion, increases the frazzle-resistance of cast iron.

        Molybdenum is one of the rare alloying metals which increases the durability, viscosity and corrosion-resistance of the metals and it does not contribute to the increase of refraction.