Niobium Tube/Pipe

Niobium Tube/Pipe Data Sheet

Reference:	HMNB1104
Dimensions:	Out Diameter: 2-100 mm Wall Thickness: 0.2-5.0 mm Length: 200-8000 mm, or customized
Standard:	ASTM B394
Material:	RO4200, RO4210
Shape:	Cylinder, Square, or Rectangle (according to the cross-section)
Purity:	99.5%-99.99%
Density:	8.57 g/cm3
Melting point:	2468 ℃
Temper:	Annealed or Unannealed

Niobium Tube and Niobium Pipe

Niobium is a rare, silvery-gray transition metal with excellent corrosion resistance and high strength at high temperatures. It is widely used in aerospace, nuclear energy, superconducting technology, and the chemical industry, and is ideal for producing superconducting materials due to its high superconducting transition temperature. Shanghai Yuepeng can supply high-quality seamless and welded niobium tubes and pipes with various specifications. The customized solutions are available according to specific requirements.

Niobium Tube/Pipe Material Chemical Composition

Material	Main Elements (%)	Impurities (≤%)
	Nb	Fe	Si	Ni	W	Mo	Ti	Ta	O	C	H	N
RO4200	Bal.	0.004	0.004	0.002	0.005	0.005	0.002	0.07	0.015	0.0040	0.0015	0.003
RO4210	Bal.	0.01	0.01	0.005	0.02	0.01	0.004	0.10	0.02	0.01	0.0015	0.01

Niobium Tube/Pipe Specifications ＆ Tolerances

Out Diameter (mm)	Out Diameter Tolerance (mm)	Wall Thickness Tolerance (mm)
1~20	±0.01	±5%
20~25	±0.05	±5%
25~40	±0.10	±5%
40~60	±0.15	±5%
60~80	±0.20	±5%
80~150	±0.25	±5%

Niobium Capillary Tube Specifications

Niobium Capillary Tubes are high-precision metal tubes with a high melting point, corrosion resistance, and good cold-working properties. It has a very small inner diameter, usually between 0.5-8 mm, and is widely used in superconductivity, chemical analysis, and high-end experiments.

Out diameter	0.2-8mm
Wall thickness	0.015-0.5mm
Tolerance	Outer diameter: ±0.003mm Wall thickness: ±0.005mm Length: ±0.05mm

Niobium Tube/Pipe Production Process

• Raw Material: Select high-purity niobium powder.
• Powder Metallurgy: Mix with binder and compact into a green billet.
• Sintering: High-temperature sintering to remove the binder and increase density.
• Heat Treatment: Anneal to relieve stress and enhance properties.
• Surface Treatment: Clean and polish the surface.
• Cutting & Customization: Cut or customize according to requirements.

Niobium Tube/Pipe Surface Finish

Depending on the intended applications, niobium tubes and pipes have three main surface finishes as follows:

• Black: The surface is “as swaged” or “as drawn”, retaining a coating of processing lubricants and oxides.
• Cleaned: The surface is chemically cleaned to remove all lubricants and oxides.
• Ground: The surface is centerless ground to remove all coating and to achieve precise dimension control.

Niobium Tube/Pipe Applications

• Superconducting Technology: Niobium tubes and pipes can be used in superconducting magnets, such as in MRI machines and particle accelerators.
• Aerospace: Niobium tubes and pipes can be applied in engine components and rocket nozzles due to their high temperature and corrosion resistance.
• Nuclear Energy: Niobium tubes and pipes are used in fuel cladding and high-temperature components in nuclear reactors.
• Chemical Industry: Niobium tubes and pipes can be employed in reactors and pipelines in highly corrosive environments, such as acidic or alkaline conditions.
• Electronics: Niobium tubes and pipes can be used in high-end electronic devices for superconducting materials.
• Niobium Capillary Tube: Niobium capillary tubes are often used in high-pressure sodium lamp production.

Niobium Tube/Pipe Packaging

The Niobium Tube/Pipe is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.