Haines & Maassen Metallhandelsgesellschaft mbH



Nb

Niobium

Melting point

2468° Celsius Niob

Specific weight

8.58 g/cm3

Abundance of element

2*10-3

Colour

white shiny

Atomic number

41

Boiling point

4742° Celsius

Purities available

Niobium 99.5%,
Niobium 99.9%
higher purities on request

Forms available

Sheets/Foils (from 100 x 100 mm) usual standard ASTM B393, rods or bars usual standard ASTM B392, wire, plates, powder, pieces
Special forms and cuttings can be supplied to your technical drawings – please let us know your requirement.

Packing

50/100 kg drums, wooden crates
small quantities (for instance single rods or foils) in special packing by parcel. We also gladly supply small quantities for instance for research and development.

Buying Niobium

If you would like to buy niobium metal or niobium semi products or find out our current niobium price please click here for our contact information. We would also appreciate your call at +49 228 946510.

 

Niobium: Niobium alloys

Niobium, in particular ferroniobium and niobium oxide, is used for the refining of so-called micro-alloy steels. In superalloys for very high thermal and chemical strain (for instance gas turbines) niobium is used as ferroniobium or nickel-niobium. Due to its superconductivity niobium-titanium is used for resonance tomographs etc. Capacitors are a further application field for niobium.

 

Niobium: Special properties

Niobium is heat- and corrosion-resistant. Pure niobium forms a very stable oxide. Particularly remarkable are the high melting- and boiling points (2468 °C resp. 4927 °C). The mechanical properties of niobium depend on the amount of impurities. At high temperatures niobium reacts with a variety of non-metallic materials.

 

Niobium: history occurrence production

Niobium was discovered by C. Hatchett in 1801. Until 1950 niobium was only known as columbium. Niobium is usually extracted together with tantalum. The most important niobium containing minerals are pyrochlore and alkaline rocks. Brazil accounts for approximately 87% of the niobium production. Further niobium producers are Canada, Australia and Ruanda. In 2009 the annual global production amounted to almost 63.000 t niobium content. In case of steels largers quantities of niobium are recovered by recycling.