Niobium, formerly called columbium, melts at 2468° C (4474° F). It is a tough, ductile, silver-gray metal having a unique combination of physical and mechanical properties. Of the five major refractory metals, it has the lowest melting temperature, density (8.57 g/cm3), and elastic modulus at room temperature (103 GPa, or 14.9 x 106), while its coefficient of linear thermal expansion (7.3 m/m - K) is the highest. Niobium is also extremely stable in a wide variety of corrosive environments including most organic acids and mineral acids with the exception of hydrofluoric acid. Major applications are in capacitors, lighting and chemical processing.
Chemical Composition:

Typical size :
Diameter 1.00mm x coil;
Diameter 1.27mm x coil;
Diameter 1.50mm x coil;
Diameter 1.60mm x coil;
Diameter 2.56mm x coil;

Typical application: Used for high-voltage sodium lights etc., illumination material.
Packing: Spooled and sealed with plastic bags then put in strong carton of 20kg net each.

Trade name : NB-1Zr Niobium-Zirc Niobium One Zirc Niobium Zirconium Niobium - 1 Zirconium Niobium 1% Zirconium NB-1%Zr Niobium 1% Zirc  

Standard Specification ASTM B 392 -03 for Niobium rod + Niobium Alloy Rod + Niobium Wire + Niobium Alloy Wire.
This specification covers Niobium rod + Niobium Alloy Rod + Niobium Wire + Niobium Alloy Wire of the following grades:
1. ASTM B 392 -03 UNS R04200 -Type 1, Reactor grade unalloyed niobium;
2. ASTM B 392 -03 UNS R04210 -Type 2, Commercial grade unalloyed niobium;
3. ASTM B 392 -03 UNS R04251 -Type 3, Reactor grade niobium alloy containing 1% zirconium;
4. ASTM B 392 -03 UNS R04261 -Type 4, Commercial grade niobium alloy containing 1% zirconium;
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Standard Specification ASTM B 391 -03 for Niobium Ingots + Niobium Alloy Ingots.
This specification covers Niobium Ingots + Niobium Alloy Ingots of the following grades:
1. ASTM B 391 -03 UNS R04200 -Type 1, Reactor grade unalloyed niobium;
2. ASTM B 391 -03 UNS R04210 -Type 2, Commercial grade unalloyed niobium;
3. ASTM B 391 -03 UNS R04251 -Type 3, Reactor grade niobium alloy containing 1% zirconium;
4. ASTM B 391 -03 UNS R04261 -Type 4, Commercial grade niobium alloy containing 1% zirconium;