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1.Niobium and niobium tube:
2.Material: RO4200-1,RO4210-2
3.Diameter:1.0-100mm
4.Thickness:0.2mm-5.0mm
5.Length:200mm-90
Niobium and niobium tube
Material: RO4200-1, RO4210-2
the Size of niobium tube :
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:
chemistry% | ||||||||||||
designation | chief component | impurities maximum | ||||||||||
Nb | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N | |
Nb1 | Remainder | 0.004 | 0.003 | 0.002 | 0.004 | 0.004 | 0.002 | 0.07 | 0.01 | 0.004 | 0.0012 | 0.002 |
Nb2 | Remainder | 0.005 | 0.005 | 0.005 | 0.01 | 0.01 | 0.004 | 0.1 | 0.015 | 0.01 | 0.0015 | 0.01 |
Table 2. Mechanical requirements (annealed condition)
Grade | Tensile strengthδbpsi (MPa),≥ | Yield strength δ0.2, psi (MPa),≥ | Elongation in 1"/2" gage length,%,≥ |
RO4200-1 RO4210-2 | 18000 (125) | 10500 (73) | 25
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Special requirements of niobium tube to be agreed on by the supplier and buyer of negotiations | |||
