FeMo is an iron alloy consisting of molybdenum and iron, generally containing 50-60% molybdenum, and is used as an alloying additive in steelmaking. Ferro Molybdenum is an alloy of molybdenum and iron. Its main use is as a molybdenum additive in steelmaking. Adding molybdenum to steel gives it a uniform fine grain organisation, improves its hardenability, helps eliminate temper brittleness, and alloys with special physical properties. Adding molybdenum to cast iron improves its strength and wear resistance.