The following content about the "use of molybdenum" answer.
1. Steel additive: As an alloy additive for steel, molybdenum is the most important use, and steel containing molybdenum accounts for 1/10 of the world's crude steel production.

2. Alloy steel consumes the largest amount of molybdenum, accounting for 44% of the world's total molybdenum consumption, accounting for more than half of the molybdenum added to steel.

3 stainless steel it accounts for about 22% of the total molybdenum consumption, usually add molybdenum amount of 4%~5%, often used for corrosion prevention, corrosion resistance.

4. Such as oil refining, gas Wells and oil Wells in severe corrosion, aircraft engines, Marine equipment, chemical equipment, etc.

5. Molybdenum and molybdenum-based alloys: Their consumption accounts for about 6% of the world's total molybdenum consumption.

6. Molybdenum melting point, high boiling point, good high temperature strength, anti-friction corrosion resistance, high thermal conductivity, small coefficient of thermal expansion, good hardenability and other advantages, so that it is widely used in aerospace, weapons, electronics, chemical and other fields, recovery satellite reentry into the atmosphere, must overcome hot gas erosion.

7. Therefore, it is required to withstand vibration, shock, vacuum, radiation and temperature changes. Molybdenum-based alloy is commonly used to make the skin of the stability skirt of the satellite recovery module.

8.TZM molybdenum alloy is also used in the production of solid fuel rocket engine nozzle of space rocket or space shuttle, nose cone of rocket, leading edge of aircraft, rudder, heat shield, honeycomb structure, etc.

9. Molybdenum chemical products: This accounts for about 10% of the total consumption of molybdenum, about half of which is used as lubricants, and the second catalyst, pigment, corrosion inhibitor, reagent, etc.

Application and application of molybdenum (molybdenum metal application) Application and development of molybdenum:
Molybdenum alloy rod (bar), wire, plate, strip, foil and shaped products are widely used in metallurgy, machinery manufacturing, electronics, lighting and some high-tech fields. Such as lamp line bracket, core axis and reflection screen; Anode, grid, auxiliary electrode and gasket for the electronic industry; Vessels, boats and heaters used in electroplating and sputtering; Heating element, electrode and heat shield of high temperature furnace; Surface treatment for surfacing and spraying; Thermocouple and protective sleeve for temperature measurement; A burning ship, etc. The use of molybdenum was further expanded. For example, thermal spraying with molybdenum powder or molybdenum wire greatly prolongs the service life of piston rings and gear parts on automobiles. Molybdenum can replace platinum crucible and electrode in glass and refractory fiber material industry, and great achievements have been made. With the advent of high temperature, molybdenum has been widely used in halogen mercury lamp and vacuum furnace. In the die casting industry, molybdenum and its alloys can be used as die casting materials for nonferrous metals and ferrous metals. Molybdenum based ceramic tube is suitable for continuous measurement of oxygen top blow converter and hot extrusion die in the process of steelmaking. Molybdenum plugs are widely used in perforated seamless steel pipes and stainless steel pipes to significantly improve productivity, product quality and reduce costs. Alloys formed from molybdenum and tungsten have excellent corrosion resistance (zinc liquid and zinc vapor). Mo-30W alloy has been widely used to make vertical shafts and temperature measuring sleeves, greatly reducing downtime and maintenance, and improving working conditions. Molybdenum has excellent oxidation resistance and can be used as a heating element at 1700℃ in the atmosphere. It can also be used as a crucible for melting rare earths and drawing certain single crystals in place of the valuable platinum crucible. More and more attention has been paid to the application of molybdenum in chemical industry, especially the rapid development of molybdenum compounds in chemical industry. In recent years, although molybdenum is in decline, the application of molybdenum compounds is still growing and developing towards multipolarization. Molybdenum and molybdenum alloys have high stability in many reaction media. Widely used in chemical, oil refining, glass and other light industry as anticorrosive materials, such as chemical equipment lining, parts, valves, steam pipes, heat exchangers, reboiler and so on. At present, molybdenum and molybdenum alloys have been used to make such acids, bases, salts, molten glass and some equipment components that work in gaseous media. The application of molybdenum compounds mainly includes the following aspects: catalyst and catalytic activator, lubricant and lubricating additives, pigments, dyes, paints and inks, water quality and medium corrosion inhibitors, composite ion exchangers, batteries, flame retardants, smoke suppressors and getter, trace element additives, molybdenum compound fertilizer, superconducting materials, ceramic materials, polymer fillers, energy storage materials, gasoline Adding agent, glass material, etc. It is predicted that in the next 10 years, new applications and developments of molybdenum are likely to be mainly in the fine chemical industry, which is likely to lead to a breakthrough growth in molybdenum consumption. Molybdenum Like tungsten, molybdenum is a refractory rare metal.