Thoriated Tungsten Wires
Since the thoriated tungsten offers excellent electron emission characteristics and a quite long service life, the tungsten wires containing thorium oxide are suitable for various electron tubes, heaters, filaments, etc. HUAXIANG provides an assortment of thoriated tungsten wires for meeting your demands. According to different content of thorium oxide, our doped tungsten wires are divided into various models including WTH7, WTH10, WTH15, WTH20 and WTH40.
Each of HUAXIANG thoriated tungsten wire features high size precision and accurate resistance control. Different model comes with different applications.
Applications
1. The WTH7 tungsten filaments are used for electron tubes, emitter hook, spring, TIG welding electrode, cathode of gas-discharge source, etc.
2. The WTH10, WTH15, WTH20 and WTH40 tungsten wires are mainly used for negative pole of electron tube, grid electrode, heat resistant electrode, shock proof filament, etc.
Specifications
| Model | |||||
| State | R | ||||
| Size | Φ 0.2- Φ 0.8 | ||||
| Diameter (mm) | Weight deviation (%) | Diameter deviation (%) | ||
| 1 level | 2 level | 1 level | 2 level | |
| Φ0.2-Φ0.35 | ||||
| Φ0.35-Φ0.80 | - | - | 1.0 | 2.0 |
| Models | Tungsten content (%) | Thorium oxide content (%) | Impurities content (%) | Every impurity content (%) |
| WTH 7 | ≥98.90 | 0.7-0.99 | 0.1 | 0.01 |
| WTH10 | ≥98.41 | 1.0-1.49 | 0.1 | 0.01 |
| WTH15 | ≥97.91 | 1.5-1.99 | 0.1 | 0.01 |
| WTH20 | ≥97.64 | 1.99-2.5 | 0.1 | 0.01 |
| WTH40 | ≥95.69 | 3.9-4.2 | 0.1 | 0.01 |
