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Tungsten Wire Types

Most of tungsten wires are used for the production of tungsten and halogen incandescent filament and gas discharge lamp electrode. People on the lamp product quality and consistency of optical parameters of the requirements have become more sophisticated, which requires us by adding small amounts of other elements to improve the performance of tungsten, so that it can adapt to the special requirements in some areas.

The tungsten wire type is showed as following:

Tungsten and tungsten alloy wire applications

Type Add. content Application
Pure tungsten wires none Heating body, evaporation coils, HID electrode and coil, lead wire, hook, side rod
Doped tungsten wires

0.2~0.4%SiO2 0.3~0.4%K2O

Single filament incandescent screw, support, guide rod or lighting outlet

0.2~0.4%SiO2 0.3~0.55%K2O

Coiled-coil incandescent filament, and support, cathode tube, tungsten heater, evaporationheater element, fluorescent filament, and other parts
Doped Thorium tungsten wires

0.3~0.55%K2O 0.2~0.5%ThO2

Hot wires for electron tube,welding electrodes,tie rod
Thorium tungsten wires

1.0% ThO2
1.5% ThO2 2.0~2.5% ThO2

Cathode tubes, high intensity discharge lamp electrodes, emission control hot wire, hooks and springs, welding electrodes and other examples of cutting
Tungsten-cerium wires 1.5~3.0%CeO2 Pulse tube heating wire, non-consumable welding electrode
Yttrium tungsten wires 2.0~3.0%Y2O3 Pulse tube heating wire, non-consumable welding electrode,HID electrode
Lanthanated tungsten wires 1.0~2.0%La2O non-consumable welding electrode
Tungsten Molybdenum wires W-20Mo Light hook, support,lighting outlet and other parts, vacuum device heater
Tungsten-rhenium wires 1.0~26.0%Re Air bulb filament microwave devices filament filament for electron beam tube, CRT filament


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