Categories By Element
Categories By Function
Maximize | Catalog No. | NB0038 |
|---|---|
| Size | Cylinder Cone and Boat |
| Material | R04200 R04210 |
| CAS Number | 7440-03-1 |
| Purity | 99.95% |
| Density | 8.57 g/cm3 |
| Surface | Polished |
Our high-quality niobium crucible & niobium cup is mainly used in metallurgical industry, chemical industry, machinery processing, glass and ceramic industries. Price competitive!
Niobium Crucible / Cup
Material: RO4200, RO4210
Purity: 99.95%
Table 1. Chemical composition:
Chemical Composition (%) | ||||||||||||
Material | Main elements(%) | Impurities (Maximum %) | ||||||||||
Nb | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N | |
RO4200 | Remainder | 0.004 | 0.004 | 0.002 | 0.005 | 0.005 | 0.002 | 0.07 | 0.015 | 0.0040 | 0.0015 | 0.003 |
RO4210 | Remainder | 0.01 | 0.01 | 0.005 | 0.02 | 0.01 | 0.004 | 0.10 | 0.02 | 0.01 | 0.0015 | 0.01 |
Table 2. Mechanical requirements (annealed condition)
Grade | Tensile strength δbpsi (MPa), ≥ | Yield strength δ0.2, psi (MPa),≥ | Elongation in 1"/2" gage length, %, ≥ | |
>=0.010 | <0.010 | |||
RO4200, RO4210 | 18000 (125) | 12000 (85) | 25 | 20 |
As a pure metal, niobium is very reactive and forms an extremely stable oxide when exposed to air which enhances its corrosion resistance. Niobium will react with a variety of non-metals at elevated temperatures.
Niobium crucible is widely used in high-temperature engineering products (for use at temperatures in excess of 1200C). It is also used as an alloying agent for certain steels where it greatly improves the strength of the resulting material. Niobium also finds applications in atomic reactors due to its corrosion resistance and, when combined with either tin (Nb3Sn) or zirconium, it has a high degree of superconductivity.
