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Niobium is a silver-grey, soft and ductile rare high-melting-point metal. It is currently the most important superconducting material.

Niobium has good low-temperature plasticity and can be cold-pressed into products in various forms such as niobium sheet, niobium rods, and niobium wires. Superconductivity is best at extremely low temperatures. For example, its resistance is close to zero at about minus 260°C. Niobium does not react with air at room temperature and will not be completely oxidized when red-hot in oxygen. Niobium has high resistance to high temperatures and has sufficient strength, plasticity and thermal conductivity above 1000°C. Niobium can directly combine with sulfur, nitrogen and carbon at high temperatures. Niobium does not react with inorganic acids or bases and is not soluble in aqua regia, but is soluble in hydrofluoric acid.

Features: Niobium has a density of 8.57g/cm³, a melting point of 2477°C, and a boiling point of 4744°C.

Uses: Heat exchanger tubes in petrochemical industry, thermometer protection tubes, corrosion-resistant and high-temperature industry, aerospace engines, weapon thrusters, rocket missile liquid bicomponent engines, nuclear reactors, submersibles, gas turbines, automobile engines, diesel Manufacturing of engines, high-temperature furnace heating belts, high-temperature molds, high-temperature fixtures and high-temperature crucibles.