Commodity: Niobium tube Standard: ASTM B394-98Dimension: Diameter: ¦Õ1.0-100mmSize: ¡¡Diameter: ¦Õ1.0-150mm ¡¡Thickness: 0.2-5.0mm ¡¡Length: 200mm-6000mm Standard: As per ASTM B394-98Purity: >=99.9% or 99.95% Table.1 Chemical composition:
Chemistry PPM
Designation
Chief component
Impurities maxmium
Nb
Ta
Si
Ni
W
Mo
Ti
Fe
O
C
H
N
Nb1
Remainder
700
50
30
20
150
40
15
Nb2
1000
80
100
180
60
Table 2. Mechanical requirements (annealed condition)
Grade
Tensile strength ¦Äb psi (MPa), ¡Ý
Yield strength ¦Ä0.2, psi (MPa),¡Ý
Elongation in 1"/2" gage length, %, ¡Ý
RO4200-1
18000 (125)
12000 (85)
25
RO4210-2
Special requirements to be agreed on by the supplier and buyer of negotiations
