Density:8.57g/cm3
Melting point: 2750 K (2477 oC)
Boiling point: 5017 K (4744 oC)
Discovered:
Niobium was discovered in 1801 by Charles Hatchett in an ore sent to England more that a century earlier. Hatchett named the element columbium (symbol Cb). In 1846 Henrich Rose independently discovered the element and named it Niobium. The metal was first isolated by Christian Blomstrand in 1864. He reduced the chloride by heating it in a hydrogen atmosphere. The name niobium was adopted internationally in 1950. The element name comes from Niobe, meaning daughter of Tantalus in Greek mythology.
Characteristics:
Niobium is a shiny, white, ductile metal. In air an oxide layer forms whose color depends on its thickness. Shades of blue, green and yellow are typical. Niobium resists corrosion due to the oxide film. The metal starts to oxidize rapidly in air at 200 oC. Niobiums chemical properties are very similar to those of tantalum. Niobium is one of the five major refractory metals (metals with very high resistance to heat and wear). The other refractory metals are tungsten, molybdenum, tantalum and rhenium.
Uses:
Niobium is used with iron and other elements in stainless steel alloys and also in alloys with a variety of nonferrous metals, such as zirconium, Niobium alloys are strong and are often used in pipeline construction. The metal is used in superalloys for jet engines and heat resistant equipment. Niobium is also used for jewelry. At cryogenic temperatures, niobium is a superconductor.
We are in the position of producing all Grades of Niobium in according with ASME standards equivalents
| Grade |
Ingot |
Sheet |
Rod |
Tube |
Wire |
Forging |
| Nb1 |
|
&radic |
&radic |
&radic |
&radic |
|
| Nb2 |
|
&radic |
&radic |
&radic |
&radic |
|
|
