Ferromolybdenum is an alloy of iron and molybdenum, which usually has between 55 and 75% molybdenum by weight. The main use of this alloy is to provide molybdenum element in steel and increase its hardness. This alloy is widely used in the production of low-alloy and high-strength steel parts that can withstand heat at high temperatures. Molybdenum is a carbide-forming alloying element. Therefore, ferromolybdenum is considered as one of the hardening ferroalloys of heat-treatable alloy steels. It should be noted that molybdenum prevents the corrosion of stainless steels and when mixed with iron, it strengthens and increases the hardness of the austenite phase.