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Niobium Tube, Niobium Pipe

Niobium Tube, Niobium Pipe

Niobium tubes or pipes are made of pure niobium metal or niobium alloys and are used in various high-temperature applications such as superconducting magnets, nuclear reactors, and aerospace industries. Niobium tubes and pipes have excellent corrosion resistance, high melting point, and good ductility. They can withstand high temperatures and extreme environments without losing their mechanical and chemical properties. Niobium tubes are used as critical components in chemical processing equipment, heat exchangers, and medical implants. They are also used in electrical and electronic applications such as capacitors, vacuum tubes, and semiconductors. Niobium tubes and pipes are available in various sizes, thicknesses, and lengths, and can be customized according to specific requirements.

Niobium Tube Properties (Theoretical)

Molecular Weight 92.9
Appearance Silvery
Melting Point 2468 °C
Boiling Point 4742 °C
Density 8.57 g/cm3
Solubility in H2O N/A
Electrical Resistivity 12.5 microhm-cm @ 0 °C
Electronegativity 1.6 Paulings
Heat of Vaporization N/A
Poisson's Ratio 0.4
Specific Heat 0.064 Cal/g/K @ 25 °C
Tensile Strength N/A
Thermal Conductivity 0.537 W/cm/K @ 298.2 K
Thermal Expansion 7.3 µm/(m·K)
Vickers Hardness 1320 MPa
Young's Modulus 105 GPa

Materials Niobium and Niobium Alloy
Purity 99.5%/99.9%/99.95%
Standard ASTM B394

Niobium Tubing Dimensions

Out diameter 2.0-100mm
Wall thickness 0.2-5.0mm
Length 200mm-8000mm

Niobium Capillary Dimensions

Out diameter 0.2-8mm
Wall thickness T0.015-0.5mm
Tolerance Outer diameter: ±0.003mm

Wall thickness T±0.005mm

Length: L±0.05mm

Niobium Tube Chemical Composition

Material Main Content

Impurities (no more than %)

Nb Fe Si Ni W Mo Ti Ta O C H N
RO4200 Remaining 0.004 0.004 0.002 0.005 0.005 0.002 0.05 0.012 0.0035 0.0012 0.003
RO4210 Remaining 0.01 0.01 0.005 0.02 0.01 0.004 0.07 0.015 0.0050 0.0015 0.005

Niobium Tube Application

Niobium capillary tubes and tantalum capillary tubes are often used in high-pressure sodium lamp production.


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.

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