Niobium grades

Niobium (Nb) is the 41st element in the periodic table of D. I. Mendeleev. Atomic weight 93.986, melting point 2741°K, boiling point 5015°K. It is a bright grayish-silvery metal, which has a volume-centred cubic crystal lattice of the form α-Fe, a = 0.3294 nm.


Production of niobium is increasing rapidly due to the organic combination of its properties such as small thermal neutron capture cross-section, refractoriness, ability to form heat resistant and superconducting alloys, getter properties, corrosion resistance, low electron yielding work, excellent hot and cold pressure machinability and weldability. The main uses of niobium are in space and aviation engineering, the military, electronics, radio engineering, nuclear power and industrial chemistry.


This metal is quite expensive. Niobium metal dust is flammable and irritating to the skin and eyes. Some of its compounds are very toxic. The maximum permissible concentration of niobium is 0.01 mg/l. Once in the human body, this element causes severe neuritis and subsequent paralysis of the limbs.


Pure niobium and its alloys are used for the production of aircraft and missile parts, shells for plutonium and uranium atomic boilers (niobium carbide, melting point 3480 ° C), containers for metals in liquid form. Liquid potassium and sodium used as heat carriers in nuclear reactors move through niobium tubes. Niobium is characterized by low induced (artificial) radioactivity and is used to make containers for storing radioactive waste. It is in demand in production of electrolytic capacitors; "hot" fittings of powerful generator and electronic lamps and (cathodes, anodes, grids, etc.). Niobium alloys are used to produce corrosion-resistant equipment in the chemical industry. It is alloyed with nonferrous metals, including uranium. Niobium is used in cryotrons - superconducting components of calculating machines. It is also well known for its use in accelerating structures for the andron collider.

Chemical Composition

Grade Nitrogen Oxygen Hydrogen Carbon Silicon Tantalum Iron Titanium The sum of tungsten and molybdenum
NB-1 0,1 0,01 0,001 0,01 0,005 0,1 0,005 0,005 0,01

Steel tubes alloyed with niobium have the highest strength and corrosion resistance. Packaged pipes can be transported as desired. In transit, they are protected against mechanical deformation, moisture and the effects of active chemicals.


We sell niobium tubes at the best price. The technical documentation includes data on the chemical composition, the limiting percentage of impurities, and the mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale production. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

Buy at a bargain price

Evek GmbH stocks a diverse range of rare and refractory metal products. We supply certified niobium rolled steel from domestic and foreign manufacturers. Our staff is always happy to provide you with expert assistance in the selection of rolled metal products. We employ some of the most experienced consulting managers. Strict adherence to production standards, excellent quality products and minimal lead time are the face of our company. Discount discounts have been introduced for regular customers.