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In Alloys
Molybdenum is used in alloys to make the metal stronger and more heat-resistant. When used in alloys, molybdenum goes into the making of things ranging from rifle barrels to filaments for light bulbs. More than 75 percent of molybdenum consumption is accounted for by the iron and steel industries.
Molybdenum goes into the making of strong and tough steels, such as those used to make automotive parts, construction equipment, and gas transmission pipes. Other important uses for alloys include tool steels, bearings, machining components, dies, steel mill rolls, cast irons, auto parts, and crusher parts. Molybdenum is also used in creating super alloys for use in furnace parts, gas turbine parts, and chemical processing equipment.
Stainless Steel
Approximately 60 percent of the United States' molybdenum needs are for stainless steel and alloy steel. Stainless steel is used for more than flatware. Stainless steels are required to meet the strength and corrosion-resistant requirements for water distribution systems, for food handling equipment, and for chemical processing equipment. Stainless steel is used in hospitals, laboratories, and in the home.
Other Uses
Besides making steel alloys, molybdenum is used in the chemical and lubricant industries. The element functions as a catalyst. It is used in paint pigments, smoke and flame retardants, and as corrosion inhibitors. It serves as a dry lubricant in the form of molybdenum disulfide on space vehicles, because it is resistant to high loads and temperatures.
Because of its high melting temperature, molybdenum is used in making light bulb filaments, metal-working dies, and furnace parts. For some special electrical applications, molybdenum cathodes are used. It also functions as a catalyst in certain chemical applications.