Niobium Bar can be widely applied in pharmacy, semiconductor, aviation and aerospace, nuclear, high-temperature assemblies, and other fields.
Specification for Niobium Bar
Standard: As per ASTM B392
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
Size: 5×5 mm to 120mm x 120mm x L<1400mm Wider bars will be named niobium plate and block.
Purity: >=99.9%
Niobium is a rare, soft, malleable, ductile, gray-white metal. It has a body-centered cubic crystalline structure and in its physical and chemical properties, it resembles tantalum. It must be placed in a protective atmosphere when processed at even moderate temperatures because it tends to react with oxygen, carbon, halogens, nitrogen, and sulfur. The metal is inert to acids, even to aqua regia at room temperatures, but is attacked by hot, concentrated acids, and especially by alkalis and oxidizing agents.
Chemical compositions for Niobium
| Composition% | ||||||||||||
| Gr | Main Content | Impurities (≤ %) | ||||||||||
| Nb | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N | |
| Nb1 | Bal | 0.004 | 0.004 | 0.002 | 0.005 | 0.005 | 0.002 | 0.05 | .012 | .0035 | .0012 | .003 |
| Nb2 | Bal | 0.01 | 0.01 | 0.005 | 0.02 | 0.01 | 0.004 | 0.07 | .015 | .0050 | .0015 | .008 |
Mechanical requirements (annealed condition) for Niobium bar
| 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 ingot to be agreed on negotiations | |||
Machined & customized Niobium parts are also available. Contact us at inquiry.crucible@winnewtech.com for any inquiries and questions on niobium and its alloy products.
Please send your request to inquiry.crucible@winnewtech.com, and we will reply you within 3 minutes
inquiry.crucible@winnewtech.com
Non-Ferrous Crucible Inc.
Tel: +86-755-84112759
Fax: +86-755-84112759
No. 7, Gongye 2nd Road, Jinsha, Kengzi, Pingshan, Shenzhen, China.
518122
inquiry.crucible@winnewtech.com
