Heat Resistant Polished Niobium Products RO4200 Pure Niobium Sheet
Top Quality products price polished niobium sheet wholesale Nb Niobium Sheet
Product Description
At room temperature, niobium does not react with air and is not completely oxidized when red hot in oxygen. Niobium can be directly chemically combined with sulfur, nitrogen and carbon at high temperatures. Niobium does not react with inorganic acids or bases and is insoluble in aqua regia, but is soluble in hydrofluoric acid. Niobium is present in the earth's crust at a level of 20 ppm and the distribution of niobium resources is relatively concentrated. Due to its good superconductivity, high melting point, corrosion resistance and wear resistance, niobium is widely used in steel, superconducting materials, aerospace, atomic energy and other fields.
Features
A large part of niobium in the world is used to produce nickel, chromium and iron base superalloys in the form of pure metal or high-purity ferroniobium and niobium nickel alloys. These alloys can be used in jet engines, gas turbine engines, rocket components, turbochargers and heat-resistant combustion materials.
Metal niobium can be prepared by electrolytic melting potassium heptafluoroniobate, or by reduction of potassium heptafluoroniobate with metal sodium or niobium pentoxide with metal aluminum. Pure niobium is used to remove residual gas in electronic tubes. Doping niobium in steel can improve the oxidation resistance of steel at high temperatures and improve the welding performance of steel. Niobium is also used to make high-temperature cermets.
Specifications
| Material | Pure niobium |
| Grade | RO4200.RO4210,R04251,R04261 |
| Standard | ASTM B392 |
| MOQ | 1KG |
| Surface | Polished |
| Characteristic | Melting point : 2468℃ / Boiling point : 4744℃ |
| Density | 8.6 g/cm3 |
| Content, Max, Weight % | ||||
| Element | Grand: R04200 | Grand:R04210 | Grand:R04251 | Grand:R04261 |
| Unalloyed Niobium | Unalloyed Niobium | (Reactor grade niobium-1% Zirconium) | (Commercial grade niobium-1% Zirconium) | |
| C | 0.01 | 0.01 | 0.01 | 0.01 |
| O | 0.015 | 0.025 | 0.015 | 0.025 |
| N | 0.01 | 0.01 | 0.01 | 0.01 |
| H | 0.0015 | 0.0015 | 0.0015 | 0.0015 |
| Fe | 0.005 | 0.01 | 0.005 | 0.01 |
| Mo | 0.01 | 0.02 | 0.01 | 0.05 |
| Ta | 0.1 | 0.3 | 0.1 | 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 |
Dimension Tolerance:
| Thickness mm | Width mm | Length mm |
| 0.05 ~ 0.10 | 100 | 600 |
| 0.10 ~ 0.15 | 100 | 800 |
| 0.15 ~ 0.20 | 200 | 800 |
| 0.20 ~ 0.30 | 300 | 1000 |
| 0.30 ~ 0.50 | 420 | 1200 |
| 0.50 ~ 1.0 | 550 | 1000 |
| 1.0 ~ 2.0 | 610 | 1000 |
| 2.0 ~ 3.0 | 500 | 1000 |
| > 3.0 | 400 | 800 |
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