ASTM B394-98 RO4200 RO4210 Niobium Tube Niobium Pipe Medical Field
Introduction
Niobium tubes are specialised pipes designed for conveying and transferring materials under extreme conditions, such as high temperature and high pressure. They are widely used in:
Nuclear industry
Aerospace
Shipbuilding
Chemical industry
Electronics
Thanks to niobium’s excellent corrosion resistance and high-temperature stability, niobium tubes possess:
Strong compressive strength
High tensile strength
Excellent fatigue resistance
Superior heat resistance
This makes them ideal for high-end industrial and scientific applications.
Surface Treatment
Niobium tubes undergo surface treatments to improve corrosion resistance, cleanliness, and flatness:
Mechanical polishing & electrolytic polishing: Enhance surface finish and flatness
Pickling & sandblasting: Remove oils, oxides, and other impurities
Chemical Composition
| Grade | Nb (Remainder) | 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 | 0.015 | 0.004 | 0.0015 |
| Nb2 | Remainder | 0.01 | 0.01 | 0.005 | 0.02 | 0.01 | 0.004 | — | 0.07 | 0.02 | 0.01 | 0.0015 |
Applications
Niobium tubes are widely used in:
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High-temperature alloys
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Niobium-based alloys
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Steel industry
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Electrical porcelain
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Coinage and monetary applications
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Medical devices
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Aerospace components
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