Niobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41.
N 0434 (OTTO) Niobium wire, 1.0 mm (0.04in) dia, 99.8% Cas 7440-03-1 - used in a vast array of applications. Some of these uses include sodium vapor lamps, HD television back lighting, capacitors, jewellery and chemical processing equipment.