Description
Material: Pure niobium
UNS No.: R04200, R04210
Diameter: 0.1～4mm
Standard: ASTM B392
Purity: ≥99.95%, 99.995%
Status: Hard, Semi-hard, Mild
Properties of Niobium
Niobium is a unique transition metal with exceptional corrosion resistant properties as well as oxidizing very slowly in air at room temperature. Originally dubbed Columbium in 1801, niobium was independently discovered as an element intrinsically tied to tantalum and not independently determined to be distinct from tantalum until 1844. For 140 years element 41 shared the names niobium and Columbium but niobium was internationally accepted in 1984 because of its importance to large high energy physics projects.
With a density of 8.5g/cm3, niobium is extremely ductile and can be formed easily even at low temperatures. It must be isolated in controlled/inert atmospheres when formed or machined at elevated temperatures to limit the formation of niobium oxides. Niobium, like tantalum, retains an extremely high melting point of 2477°C (4490°F). Of all elements, niobium has the highest superconducting critical temperature at 9.2 Kelvin. Metal superconductor alloys with the highest critical temperatures and fields are all niobium based.
Niobium wire is made of niobium bar. First, rolling niobium bar to the right size, acid pickling surface of niobium rods to remove oil and impurities, and then clean with clear water, trim both ends of the niobium rod, then clean again. Finally, according to the actual needs, to trim and stretch for many times, until get the right size of the niobium wire.
| Composition% | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Main Content | Impurities (no more than %) | ||||||||||
| Nb | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N | |
| RO4200 | Remaining | 0.004 | 0.004 | 0.002 | 0.005 | 0.005 | 0.002 | 0.05 | 0.012 | 0.0035 | 0.0012 | 0.003 |
| RO4210 | Remaining | 0.01 | 0.01 | 0.005 | 0.02 | 0.01 | 0.004 | 0.07 | 0.015 | 0.0050 | 0.0015 | 0.005 |
Features for Nb wire
1. Low thermal expansion;
2. High density; High strength;
3. Good corrosion resistance
4. Low resistivity;
5. Manufactured based on customers’ requirements
Testing
Chemical composition test
Mechanical properties test
Surface appearance inspection
Metallography detection
Niobium Wire Application
With the advantages of high luminous efficiency, low power consumption, long service life and strong ability to penetrate fog, niobium wire is mainly applied in the field of electric light source, it is used to make the luminescent village material of high pressure sodium lamp. Niobium wire is also used in the fields of chemical industry, superconducting materials, high temperature metallurgy and so on.
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We are able to fabricate niobium products to your specification.