描述
For more than 10 years, Hoau has been a leading supplier of rare metals such as tantalum, niobium and its alloys. Relying on China’s abundant non-ferrous metal mine resources, it brings exquisite metal processing technology to meet customers’ requirements for non-ferrous metal materials in the fields of chemical industry, optoelectronics, aviation and other fields.
| Niobium and niobium alloy rods, wire grades and standards |
|---|
| category | grade | standard |
| Sticks, lines | R04200、R04210、R04251、R04261 | ASTM B392 standard |
| Capacitor grade Nb and Nb-Zr wires (annealed) Mechanical properties |
|---|
| grade | Ultimate Tensile Strength, Min, psi (MPa) | Yield Strength, psi (MPa) | Elongation min. %, mm |
| Types 1 and 2 | 18 000 (125) | – | 20 |
| Types 3 and 4 | 28 000 (195) | – | 15 |
| Capacitor-grade niobium and niobium-zirconium wire processability |
|---|
| status | Bending time | Surface |
| Before forging | ≥ 25 | The surface must be smooth and shiny, free of stains, scratches, or other blemishes |
| After 1450°C±50°C, forge for 30 minutes | > 15 |
| Niobium and niobium alloy bars, wire sizes and tolerances |
|---|
| Diameter/inch (mm) | Tolerance/inch (mm) |
| 0.020 – 0.030 (0.51 – 0.76) | ±0.00075 （ ± 0.019） |
| 0.030 – 0.060 ( 0.76 – 1.52) | ±0.001 （ ± 0.025） |
| 0.060 – 0.090 (1.52 – 2.29) | ±0.0015 （ ± 0.038） |
| 0.090 – 0.125 (2.29 – 3.18) | ±0.002 （ ± 0.051） |
| 0.125 – 0.187 (3.18 – 4.75) | ±0.003 （ ± 0.076） |
| 0.187 – 0.375 (4.75 – 9.53) | ±0.004 （ ± 0.102） |
| 0.375 – 0.500 (9.53 – 12.7) | ±0.005 （± 0.127） |
| 0.500 – 0.625 (12.7 – 15.9) | ±0.007 （ ± 0.178） |
| 0.625 – 0.750 (15.9 – 19.1) | ±0.008 （ ± 0.203） |
| 0.750 – 1.000 (19.1 -25.4) | ±0.010 （ ± 0.254） |
| 1.000 – 1.500 (25.4 – 38.1) | ±0.015 （ ± 0.381） |
| Tolerances can be adjusted according to customer requirements |
Niobium wire application
Niobium wire has the advantages of high luminous efficiency, low power consumption, long service life and strong fog permeability, and is mainly used in the field of electric light source to manufacture luminous village materials for high-pressure sodium lamps. Niobium wire is also used in chemical industry, superconducting materials, high-temperature metallurgy and other fields.
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