05/15/2018

Niobium Metal

Niobium metal is silvery white metal, which is ductile. It process into powder normally. However other forms are available too as chips, slugs, sheets, foils, granules, cylinders, ingot, wires and rods. Niobium metal is stable in air. Under high temperature, it compounds with sulfur, nitrogen and carbon. It alloy with titanium, zirconium, hafnium and tungsten easily. The chemical property of niobium is very close to tantalum. Although its corrosion resistance is not high as tantalum, but its price is lower and more common. So with low request situations, it replace tantalum like tank coating for chemical processing.

Niobium Metal

CAS No.: 7440-03-1 EINECS No.: 231-113-5 Molecular Formula: Nb Molecular Weight: 92.91
Density: 8.57 Melting Point: 2520℃ Boiling Point: 4742℃ UN 1383 4.2/PG 2

Applications

Niobium metal can absorb gas, which use as degasifier. It is also great superconductor at low temperature. Niobium is the third elements that is one of the II category superconductor after vanadium and technetium. The purity of niobium will affect its superconducting property.

Niobium metal apply to high-temperature alloys normally, for examples inconel 718, C-103, FS85, Cb129Y, Cb752 and Nb1Zr.  Inconel 718 is a kind of Ni-Nb alloy, which contain Ni 50%, Cr 18.6%, Fe 18.5%, Nb 5%, Mo 3.1%, Ti 0.9% and Al 0.4%. C-103 is a kind of niobium alloy, which contains 89% Nb, 10% Hf and 1% Ti.

Niobium powder is for welding electrode production normally. There are different kinds, FNb-1, FNb-2 and FNb-3.