Niobium and tantalum have similar properties. Like tantalum niobium is a body-centered cubic, soft and ductile metal which can be worked and machined easily if it shows no impurities.

Niobium has a high melting point 2470 ℃, and consequently very low vapour pressures and low evaporation rates at high temperatures.

The superconductivity of niobium is worth mentioning. If niobium is cooled down below -264℃, its electrical resistance disappears. -264℃ is the highest transition temperature of superconductivity of all pure metals.

The mechanical properties of niobium are influenced by small amounts of interstitially dissolved oxygen, nitrogen, hydrogen or carbon: the hardness and the tensile strength get larger whereas the elongation gets smaller.

Niobium and the niobium alloy have very similar physical properties. Alloying niobium with 1% zirconium increases the strength of niobium and decreases slightly its elongation. The increased strength is very advantageous especially at high temperatures. The tensile strength of the alloy niobium at 1000℃ is twice as high as that of unalloyed niobium.

Molybdenum and tungsten manufacturer-Zhengzhou Sanhui Co., Ltd has been dealing in refractory metal for over 24 years. We are one Alibaba 10 years’ golden supplier. We are pioneer of argon-arc welding electrode of the world. Come to us for standard and customized metal products, like tungsten, titanium, molybdenum products.