Niobium wire and rod
Refer Standard: ASTM B392
Diameter: ￠0.3mm-￠200mm Niobium and niobium alloy wire is used in a variety of applications. These include capacitors, medical devices, and jewelery. Hongsheng offers various grades of wire, custom manufactured for each industry.Niobium rod is commonly used in the superconductor industry. We offers reactor grade Nb, RRR Niobium, and various niobium/titanium alloys for such markets.
Wire -spooled or coiled
Diameter (mm) | Typical tolerance +/-(mm) | 0.30 to 0.51 | 0.008 | 0.52 to 0.76 | 0.018 | 0.77 to 1.52 | 0.020 | 1.53 to 3.18 | 0.050 |
Rod (>2.0mm ) Straight Lengths Diameter (mm) | Typical tolerance +/-(mm) | 1.52 to 3.18 | 0.050 | 3.15 to 63.5 | 1.5% of diameter |
Chemical composition (Max weight %) Element | Type 1 （reactor grade) RO4200 | Type 2 (commercial grade) RO4210 | Type 3 (reactor grade Nb-1%Zr) RO4251 | Type 4 (commercial grade Nb-1%Zr) RO4261 | Type 5 (RRR superconducting grade) ROxxxx | C | 0.01 | 0.01 | 0.01 | 0.01 | 0.0030 | N | 0.01 | 0.01 | 0.01 | 0.01 | 0.0030 | O | 0.015 | 0.025 | 0.015 | 0.025 | 0.0040 | H | 0.0015 | 0.0015 | 0.0015 | 0.0015 | 0.0005 | Zr | 0.02 | 0.02 | 0.8-1.2 | 0.8-1.2 | 0.010 | Ta | 0.1 | 0.3 | 0.1 | 0.5 | 0.1 | Fe | 0.005 | 0.01 | 0.005 | 0.01 | 0.005 | Si | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | W | 0.03 | 0.05 | 0.03 | 0.05 | 0.007 | Ni | 0.005 | 0.005 | 0.005 | 0.005 | 0.003 | Mo | 0.010 | 0.020 | 0.010 | 0.050 | A | Ha | 0.02 | 0.02 | 0.02 | 0.02 | A | Ti | 0.02 | 0.03 | 0.02 | 0.03 | 0.005 | When specified: | B | 2ppm |
| 2ppm |
|
| Al | 0.002 | 0.005 | 0.002 | 0.005 | 0.005 | Be | 0.005 |
| 0.005 |
|
| Cr | 0.002 |
| 0.002 |
| B | Co | 0.002 |
| 0.002 |
| B |
A: The limits shown are for information only when the RRR ratio is greater than 260. B: Total of these metals is 0.005%.
Mechanical requirements (annealed condition) Grade | Ultimate Tensile strength min,(MPa) | Yield strength min,(MPa) | Elongation, min, (%) | ≥0.254mm | <0.254mm | Type 1&2 | 125 | 73 | 20 | 15 | Type 3&4 | 195 | 125 | 20 | 15 | Type 5 | 95 | 50 | 30 | 30 |
Special requirements to be agreed on by the supplier and buyer of negotiations | 
