95% pure niobium alloy tubing

描述

For more than 10 years, HuaYu has been a leading supplier of rare metals such as tantalum, niobium and its alloys. Relying on China’s abundant non-ferrous metal mine resources, it brings exquisite metal processing technology to meet customers’ requirements for non-ferrous metal materials in the fields of chemical industry, optoelectronics, aviation and other fields.

Niobium and niobium alloy tubing grades and standards
category	country	grade	standard
tube	United States	R04200、R04210、R04251、R04261	ASTM B394 standard

Niobium & Niobium Alloy Tube Chemical Composition (wt%≤)
element	Niobium R04200	Niobium R04210	NB-1% Zirconium R04251	NB-1% Zirconium R04261
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
zirconium	0.02	0.02	0.8 to 1.2	0.8 to 1.2
Ta	0.1	0.3	0.1	0.5
iron	0.005	0.01	0.005	0.01
S	0.005	0.005	0.005	0.005
W	0.03	0.05	0.03	0.05
nickel	0.005	0.005	0.005	0.005
mo	0.010	0.020	0.010	0.050
high frequency	0.02	0.02	0.02	0.02
titanium	0.02	0.03	0.02	0.03
B	2ppm	–	2ppm	–
aluminium	0.002	0.005	0.002	0.005
be	0.005	–	0.005	–
chromium	0.002	–	0.002	–
C	0.002	–	0.002	–

Niobium and niobium alloy tube sizes and tolerances
Outer Diameter (D)/in (mm)	Outer Diameter Tolerance/in (mm)	I.D. 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
Tolerances can be adjusted according to customer requirements.

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