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High Quality Niobium Crucible
Niobium crucible is made through E-beam remelting and forging. It can work under the condition of high temperature and corrosio.
Shape: cylinder, cone and boat
Grade: R04200, R04210
Size: Irregular
Purity: 99.9~99.95%
Packaging: Export standard package or as per clients request
Mechnical properties
Grade(UNS) | Annealed | ||
Tensile strength min, psi (MPa) | Yield strength min,psi (MPa) | Elongation min, % (1 inch gage length) | |
R04200, R04210 | 18000 (125) | 10500 (73) | 15~20 |
R04251, R04261 | 28000 (195) | 18000 (125) | 15~20 |
R04220(RRR grade) | 14000 (95) | 7200 (50) | 30 |
Chemical Requirements
| Content, Max, Weight % | |||||
| Element | R04200 Unalloyed Niobium | R04210 Unalloyed Niobium | R04251 (Reactor grade niobium-1% Zirconium) | R04261 (Commercial grade niobium-1% Zirconium) | |
| C | 0.010 | 0.010 | 0.010 | 0.010 | |
| O | 0.015 | 0.025 | 0.015 | 0.025 | |
| N | 0.010 | 0.010 | 0.010 | 0.010 | |
| H | 0.0015 | 0.0015 | 0.0015 | 0.0015 | |
| Fe | 0.005 | 0.010 | 0.005 | 0.010 | |
| Mo | 0.010 | 0.020 | 0.010 | 0.050 | |
| Ta | 0.100 | 0.300 | 0.10 | 0.5 | |
| Ni | 0.005 | 0.005 | 0.005 | 0.005 | |
| Si | 0.005 | 0.005 | 0.005 | 0.005 | |
| Ti | 0.02 | 0.03 | 0.02 | 0.03 | |
| W | 0.03 | 0.05 | 0.03 | 0.05 | |
| Zr | 0.02 | 0.02 | 0.8~1.2 | 0.8~1.2 | |
| Nb | Remainder | Remainder | Remainder | Remainder | |