Niobium pipe is a hollow pipe made of pure niobium, which has excellent corrosion resistance, electrical conductivity, and processability. It is usually used in the chemical industry, machinery, electronics, nuclear industry, and other fields under harsh environments such as high temperatures, high pressure, strong acid, and strong alkali. The diameter and wall thickness of the niobium tube can be customized according to application requirements and can be used to manufacture reactors, heat exchangers, alloy heaters, vacuum furnace tubes, particle accelerators, etc.
1. Physical properties
- Density: 8.57 g/cm3;
- Melting point: 2477°C;
- Boiling point: 4742°C;
- Thermal conductivity: 53.7 W/mK;
- Conductivity: 7.46 × 10^6 S/m;
- Elastic modulus: 105 GPa;
- Combustion temperature: about 585°C.
2. Chemical Properties
Strong corrosion resistance, good corrosion resistance in common organic acids, inorganic acids, and most alkaline solutions;
High-temperature resistance can maintain good stability at high temperatures.
It should be noted that although Niobium tube has good corrosion resistance and high-temperature resistance, it may still be affected by corrosion in some special chemical environments (such as high-temperature solutions containing fluoride, concentrated hydrofluoric acid, etc.).
|
Chemistry % |
||||||||||||
|
Designation |
Chief component |
|
Impurities less than |
|||||||||
|
Nb |
Fe |
Si |
Ni |
W |
Mo |
Ti |
Ta |
O |
C |
H |
N |
|
|
Nb1 |
Remainder |
0.004 |
0.002 |
0.002 |
0.004 |
0.004 |
0.002 |
0.07 |
0.015 |
0.005 |
0.0015 |
0.003 |
|
Nb2 |
Remainder |
0.02 |
0.02 |
0.005 |
0.02 |
0.02 |
0.005 |
0.15 |
0.03 |
0.01 |
0.0015 |
0.01 |
3. Mechanical properties
|
Grade(UNS) |
Annealed |
||
|
Tensile strength min, psi (MPa) |
Yield strength min, psi (MPa) |
Elongation min, % (1 inch gage length) |
|
|
R04200 |
18000 (125) |
10500 (73) |
25 |
|
R04210 Welded |
18000 (125) |
8500 (59) |
25 |
|
R04210 Seamless |
18000 (125) |
10500 (73) |
25 |
|
R04251 |
28000(195) |
18000(125) |
20 |
|
R04261 |
28000(195) |
18000(125) |
20 |
4. Niobium pipe is a metal material with high temperature, high strength, and excellent corrosion resistance. It has the following characteristics and advantages
1) High-temperature resistance: Niobium tube can work in a high-temperature environment, and its high-temperature stability can reach 2000°C.
2) High strength: The niobium tube has high strength and good tensile and compressive strength.
3) Good corrosion resistance: It exhibits good corrosion resistance under the corrosive conditions of strong acid, strong alkali, and oxidizing gas.
4) Ease of processing: Niobium tubes are easy to process, weld and bend, and can be made into devices of various shapes and sizes.
5) Lightweight: Niobium tubes are lighter than steel, which can reduce the weight of various structures and improve work efficiency and safety.
In short, niobium tube has the advantages of high-temperature stability, high strength, corrosion resistance, and easy processing, and is widely used in high-tech fields such as aerospace, nuclear industry, and chemical industry.
5. Product Display
6. Product Process
Cold drawn (rolled) :Round tube blank-→ heating-→ perforation-> heading-→ annealing-→ pickling-→ oiling (copper plating) → multi-pass cold drawing (cold Rolling)-+ billet tube → heat treatment → straightening → hydraulic test (flaw detection)-> marking-→ storage
7. Niobium pipe application range, mainly for the following fields
1) Chemical industry: used for manufacturing chemical reactors, storage vessels, Japanese pipes, etc.
2) Aviation: use for manufacturing high-temperature resistance, corrosion resistance mechanisms, fuel bottles, gas bottle, etc.
3) Medical equipment: used for X-light intensity nuclear magnetic resonance imaging equipment, etc.
4) Semiconductor industry: use for manufacturing high-temperature reaction tubes, vacuum tubes, semiconductor material manufacturing, etc.
5) Other fields: Used in nuclear fuel processing, high-temperature furnaces, high-temperature graphite reactors, electronic components, etc.
Niobium tube is a kind of superior metal material, possessing various excellent physical and chemical properties. High temperature, corrosion, etc. have many applications, and many applications in chemical engineering, aviation, medical equipment, semiconductors, and other areas.
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