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Niobium Rod / Niobium Bar / Niobium Ingot
Niobium has a high melting point, excellent resistance to corrosion, and good workability. Niobium rod is widely used for pharmacy, semiconductor, aviation and aerospace, nuclear, high-temperature assemblies, and other fields.
Specification for Niobium Rod / Niobium bar / Niobium Ingot
Material: R04200-Type 1 -Reactor grade unalloyed niobium
R04210-Type 2 -Commercial grade unalloyed niobium
R04251-Type 3—Reactor grade niobium alloy containing 1 % zirconium
R04261-Type 4—Commercial grade niobium alloy containing 1 % zirconium
R40220-Type 5 -RRR grade pure niobium
Diameter: 3~145mm diameter, 5mm x 5mm L to 120mm x 120mm x L
Standard: As per ASTM B392
Purity: >=99.9%
Chemical composition for Niobium Rod / Niobium bar / Niobium Ingot:
| Composition% | ||||||||||||
| Gr | Main Content | Impurities (≤ %) | ||||||||||
| Nb | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N | |
| Nb1 | Remainder | 0.004 | 0.004 | 0.002 | 0.005 | 0.005 | 0.002 | 0.05 | 0.012 | 0.0035 | 0.0012 | 0.003 |
| Nb2 | Remainder | 0.01 | 0.01 | 0.005 | 0.02 | 0.01 | 0.004 | 0.07 | 0.015 | 0.0050 | 0.0015 | 0.008 |
Mechanical requirements (annealed condition) for Niobium Rod / Niobium bar / Niobium Ingot:
| Grade | Tensile strength,δb psi (MPa), ≥ | Yield strength,δ0.2, psi (MPa), ≥ | Elongation in 1"/2" gage length, %, ≥ |
| R04200-1 R04210-2 | 18000 (125) | 10500 (73) | 25 |
| Special requirements of niobium rod to be agreed on negotiations | |||
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