The diameter of cleaned tungsten wire typically ranges from a few microns to several millimeters, depending on the application:
- Ultra-Fine Tungsten Wire: Diameters as small as 5–20 microns, used in electron tubes, filaments, or precision instruments.
- Fine Tungsten Wire: Diameters of 20–100 microns, commonly used in lighting or heating elements.
- Coarse Tungsten Wire: Diameters of 0.1–3 mm, used for electrodes, welding, or structural components.
The diameter range is determined by the drawing process and die precision, with ultra-fine tungsten wire requiring higher-precision equipment.

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