Niobium tube
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Description

Niobium tube   Niobium pipe : Material: RO4200-1, RO4210-2 Size:    Diameter: φ1.0-100mm Thickness: 0.2-5.0mm Length:  200mm-9000mm Standard: As per ASTM B394-98 Purity:   >=99.9%  or  99.95%    

Table.1 Chemical composition:

Table 2. Mechanical requirements (annealed condition)


GradeTensile strength δbpsi (MPa), ≥  Yield strength  δ0.2, psi (MPa),≥Elongation in 1"/2" gage length, %, ≥
RO4200-1RO4210-2 18000 (125)10500 (73) 25  
Chemical Analysis


ElementPercentage (%)
C0.0034
N0.0002
H0.0002
O0.008
Fe0.0003
Mo<0.0001
Ni0.0001
Ti<0.0001
Si<0.0001
Ta0.0399
W<0.001
Nb>=99.95%