Niobium, atomic number 41, atomic weight 92.90638, gray white metal, melting point 2468 ℃, boiling point 4742 ℃, specific gravity 8.57 g/cm ³, Body centered cubic structure.

Niobium and niobium alloy alloys have high strength at high temperatures, relatively low density compared to other high-temperature high-strength metals such as tungsten and tantalum, and are easy to machine and shape. Therefore, they are commonly used as key components in rocket engines.

The superconducting transition temperature of niobium is high, and superconducting materials such as niobium titanium, niobium tin, niobium aluminum germanium are not only used for power transmission, power generation, manufacturing of superconducting magnets, and controlling nuclear fusion, but also for navigation devices in spacecraft, electromagnetic propulsion equipment for high-speed diving vessels, and superconducting high-speed trains.

Niobium has good corrosion resistance and can be used as a heat exchanger, condenser, filter, agitator, etc. Niobium carbide can be used alone or in combination with tungsten carbide and molybdenum carbide, as a coating for hot forging dies, cutting tools, jet engine turbine blades, valves, tail skirts, and rocket nozzles.

Alloy steel containing niobium has high strength, good toughness, and resistance to cold quenching, making it widely used in oil pipelines.

Main products and applications:

Niobium sheet: mainly used as a superconducting barrier material;

High temperature niobium alloys (niobium tungsten alloys, niobium hafnium alloys): Due to their excellent mechanical properties and stability at high temperatures, they are mainly used in the aerospace field (structural materials for rocket nozzles, etc.);

Niobium strip: LED backlight;

Niobium alloy tube: a key component material for high-pressure sodium lamps used in electric light sources.