Niobium features high melting point , low vapor pressure , good cold processability ,excellent chemical stability , good resistance to corrosion , high dielectric constant ,in surface oxide film .widely used in many industries such as electronics ,metallurgy, chemical processing , hard alloy cutters , aerospace and aviation.
Product name:Niobium wire
Material: RO4200-1, RO4210-2A
Size: Φ≥0.3mm
Tolerance:Φ(0.3~0.4)mm±0.01mm
Φ(0.4~1.0)mm±0.02mm
Φ>1.0mm±0.15mm
Standard: ASTM B392-98
Purity: ≥99.9% or ≥99.95%
Table.1 Chemical composition:
Chemistry % |
Designation | Chief component | Impurities maxmium |
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 | 0.015 | 0.004 | 0.0015 | 0.002 |
Nb2 | Remainder | 0.02 | 0.02 | 0.005 | 0.02 | 0.02 | 0.005 | 0.15 | 0.03 | 0.01 | 0.0015 | 0.01 |
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Table 2. Mechanical requirements (annealed condition)
Grade | Tensile strength δbpsi (MPa), ≥ | Yield strength δ0.2, psi (MPa),≥ | Elongation in 1"/2" gage length, %, ≥ |
RO4200-1 RO4210-2 | 18000 (125) | 12000 (85) | 25 |
Special requirements to be agreed on by the supplier and buyer.
