Specs : according to ASTM B392 -99 R04210
Chemical composition :
            C                 0.01%max
            N                 0.01%max
            O                 0.025%max
            H                 0.0015%max
            Zr                0.02%max
            Ta               0.3%max
            Fe               0.01%max
            Si                0.005%max
            W                0.05%max
            Ni                0.005%max
            Mo               0.02%max
            Hf                0.02%max
            Ti                0.03%max
            Al                0.005%max
Physical & Mechanical property :
            Tensile strength 125 MPa min.
            Yield strength    73 MPa min.
            Elongation         20%min
Size available :
Diameter : 6.0 up to 110mm x Length 1500mm max.

Typical size :  
Ø 6.35mm x 1000mm,
Ø 20mm x 515mm,
Ø 30mm x 250mm,
Ø 30mm x 500mm,
Ø 40mm x 120mm,
Ø 45mm x 1000mm,
Ø 50mm x 120mm,
Ø 76.2mm x 500mm.

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;