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» Niobium

Niobium tube


Product name: Niobium tube
Executive standard: GB/T8183-1987.
Grade: RO4200-1, RO4210-2
Specification: Diameter: φ2.0-100mm
Thickness: 0.2-5.0mm
Length: 200mm-8000mm
Capillary tube size specification: Outside diameter Φ0.2~Φ8mm, wall thickness T0.015~0.5mm.
Maximum accuracy: Outer diameter Φ±0.003mm, wall thickness T±0.005mm, length L±0.05mm.
Appearance: When observed under microscope, the inner and outer surface of the tube shows uniform metallic luster without oxidation, hydrogenation discoloration, scratch, deformation, burr, etc.

  • Product Description

Ingredient Description:

Ingredients %
Brand Main ingredients Other impurities
Nb Fe Si Ni W Mo Ti Ta O C H N
Nb1 Remaining 0.004 0.004 0.002 0.005 0.005 0.002 0.05 0.012 0.0035 0.0012 0.003
Nb2 Remaining 0.01 0.01 0.005 0.02 0.01 0.004 0.07 0.015 0.0050 0.0015 0.005
If the user has special requirements, the parties specifically agreed to.



Physical properties.

Standard number Tensile strength, lb/in2 (MPa) Yield strength (0.2% of residual deformation) £/in2 (MPa) Elongation, %.1″ (2.54cm) pitch


18000 (125) 12000 (85) 25

Uses: Niobium and niobium alloy tubes have high melting point, corrosion resistance, good cold working properties, etc. They are widely used in the chemical industry, electronics industry, aviation

In the aerospace industry, it is mainly used to make high-pressure sodium lamps, structural materials for aviation and aerospace engines, reaction vessels for chemical processes, heat exchanger tubes, internal elements of reactors

The material is used in the production of the niobium and zirconium alloys. The addition of zirconium to niobium can significantly improve the oxidation resistance and strength of the material, and currently niobium-zirconium alloys are

Manufactured into capillary tubes to supply the sodium lamp manufacturing industry.


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    Shaanxi Zhongbei Titanium Tantalum Niobium Metal Material Co., Ltd. is a Chinese enterprise specializing in the processing of non-ferrous metals, serving global customers with high quality products and perfect after-sales service.

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