High Quality Superconductor Niobium Seamless Tube Price Per Kg

Product Parameters

Product Name	Polished Pure niobium Seamless Tube for Piercing Jewelry kg
Materials	Pure Niobium and Niobium Alloy
Purity	Pure niobium 99.95%min.
Grade	R04200, R04210, Nb1Zr (R04251 R04261), Nb10Zr, Nb-50Ti etc.
Shape	Tube/pipe, round, square, block, cube, ingot etc. customized
Standard	ASTM B394
Dimensions	Accept customized
Application	Electronic industry, steel industry, chemical industry, optics, gemstone manufacturing, superconducting technology, aerospace technology and other fileds

Niobium Alloy Tube/Pipe Grade, Standard and Application
Products	Grade	Standard	Application
Nb	R04210 Type	ASTM B394	Electronic industry, Superconductivity
Nb1Zr	R04261 Type	ASTM B394	Electronic industry, Superconductivity, Sputtering target

Chemical Composition

Niobium and Niobium Alloys Tube/Pipe Chemical Composition
Element	Type1 (Reactor Grade Unalloyed Nb)  R04200	Type2 (Commercial Grade Unalloyed Nb) R04210	Type3 (Reactor Grade Nb-1%Zr)         R04251	Type4 (Commercial Grade Nb-1%Zr)  R04261
Max Weight % (Except Where Otherwise Specified)
C	0.01	0.01	0.01	0.01
N	0.01	0.01	0.01	0.01
O	0.015	0.025	0.015	0.025
H	0.0015	0.0015	0.0015	0.0015
Zr	0.02	0.02	0.8-1.2	0.8-1.2
Ta	0.1	0.3	0.1	0.5
Fe	0.005	0.01	0.005	0.01
Si	0.005	0.005	0.005	0.005
W	0.03	0.05	0.03	0.05
Ni	0.005	0.005	0.005	0.005
Mo	0.010	0.020	0.010	0.050
Hf	0.02	0.02	0.02	0.02
Ti	0.02	0.03	0.02	0.03

Dimension Tolerance

Niobium and Niobium Alloys Tube Dimension and Tolerance
Outer Diameter (D)/in (mm)	Outer Diameter Tolerance/in (mm)	Inner Diameter Tolerance/in (mm)	Wall Thickness Tolerance/%
0.187 < D < 0.625 (4.7 < D < 15.9)	± 0.004 (0.10)	± 0.004 (0.10)	10
0.625 < D < 1.000 (15.9 < D < 25.4)	± 0.005 (0.13)	± 0.005 (0.13)	10
1.000 < D < 2.000(25.4 < D < 50.8)	± 0.0075 (0.19)	± 0.0075 (0.19)	10
2.000 < D < 3.000(50.8 < D < 76.2)	± 0.010 (0.25)	± 0.010 (0.25)	10
3.000 < D < 4.000(76.2 < D < 101.6)	± 0.0125 (0.32)	± 0.0125 (0.32)	10
The tolerance can be adjusted based on customer's request.

Niobium Tube / Niobium Pipe Production Technology

The technological process for niobium tube extrusion production: preparation, power frequency induction heating (600 + 10 Dc), glass powder lubrication, secondary power frequency induction heating (1150 + 10 Dc), reaming (reduction of area is less than 20.0%), third power frequency induction heating (1200 + 10 Dc), small deformation, extrusion(extrusion ratio is not more than 10, and reduction of area is less than 90%) , air cooling, and finally finished the hot extrusion process of niobium tube. The niobium seamless tube produced by this method ensures sufficient thermal process plasticity. The disadvantage of niobium fluidity is avoided by means of small deformation extrusion. Performance and dimensions meet user requirements.

Application

Niobium tube / pipe is used in industrial, electric light source, heating and heat shield electric vacuum equipment. High purity niobium tube has higher requirements for purity and uniformity, it can be used as the cavity material of the superconducting linear collider. The biggest demand for niobium tube and pipe is for steel enterprises, and the materials are mainly used in acid washing and immersion tank, jet pump and its system pipe fittings.