Niobium Pipe

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional niobium pipe manufacturers and suppliers in China. Welcome to wholesale customized niobium pipe at competitive price from our factory. Good service and quality products are available.

 

Niobium pipe is less corrosion resistant than tantalum at high temperatures. Niobium tube is not attacked by nitric acid up to 100 °C but is attacked by mixtures of nitric and hydrofluoric acids. Hot concentrated hydrochloric acid, sulfuric acid and phosphoric acid will corrode it, but hot concentrated nitric acid will not. Niobium tube is unaffected by most acids at room temperature. It will be attacked to some extent by alkaline solutions at all temperatures. Niobium is used in the nuclear industry due to its low thermal neutron capture cross section. Niobium can be electrically heated and anodized into a variety of colors, making it very attractive in the jewelry industry.

 

Niobium pipe is a rare, soft, malleable, ductile, gray-white metal. It has a body-centered cubic crystalline structure and in its physical and chemical properties, it resembles tantalum. It must be placed in a protective atmosphere when processed at even moderate temperatures because it tends to react with oxygen, carbon, halogens, nitrogen, and sulfur. The metal is inert to acids, even to aqua regia at room temperatures, but is attacked by hot, concentrated acids, and especially by alkalis and oxidizing agents. Niobium capillary tubing and niobium zirconium capillary tubing is often used in high pressure sodium lamp production.

 

Element	R04200 (Reactor Grade)	R04210 (Commercial Grade)
O	0.015% max	0.025% max
C	0.01% max	0.01% max
N	0.01% max	0.01% max
H	0.0015% max	0.0015% max
Zr	0.02% max	0.02% max
Fe	0.005% max	0.01% max
Si	0.005% max	0.005% max
W	0.03% max	0.005% max
Ni	0.005% max	0.0050% max
Mo	0.01% max	0.02% max
Hf	0.02% max	0.02% max
Ti	0.02% max	0.02% max
Ta	0.1% max	0.3% max
Nb	Remainder	Remainder

 

Ultimate Tensile Strength, Min, psi (MPa)	Yield Strength, psi (MPa)	Elongation min %
18 000 (125)	10 500 (73)	25

 

Physical Properties of Niobium Pipe
ASTM B394	Tensile strength,Min, psi(Mpa)	Yield strength (0.2% residual deformation)	Elongation (2.54cm standard distance)
R04200 R04210	18000psi (125Mpa)	12000psi (85Mpa)	25%

 

 

 

We have more than 15 years of production and export experience, if you have Niobium tube or other niobium alloy products customized needs, please contact me.

 

 

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