Tungsten-lanthanum oxide

Tungsten-Lanthanum oxide (TL)

Lanthanum oxide – an additive that raises the bar. This combination gives tungsten better machinability.


When tungsten is alloyed with small additions of lanthanum oxide (La₂O₃), its creep resistance and recrystallization temperature are increased. Tungsten-lanthanum oxide is easier to machine than chemically pure tungsten. TL is an ideal material for applications such as ion sources, welding electrodes, and contact electrodes.



  • High melting point
  • High thermal resilience
  • Good electrical conductivity
  • Good thermal conductivity
  • Low coefficient of thermal expansion
  • Not radioactive


  • Boats for vapor deposition applications
  • Round rods for semiconductor manufacturing
  • Power supply lines and anodes/cathodes for electron tubes
  • Electrodes for plasma spraying
  • Resistance welding electrodes
  • WIG electrodes for inert gas welding, plasma welding

Available formats

  • Components to drawing
  • Round rods
  • Profiles
  • Electrodes


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Phone: +49 (0) 711 97948 – 0

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Tungsten, tungsten-copper, tungsten heavy alloys, molybdenum, TZM or hard metal: our high-performance materials for your individual requirements.

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Negele Hartmetall-Technik

Löwenstr. 94
70597 Stuttgart

Telefon +49 (0) 711 97948 – 0

E-Mail: kontakt@negele-hartmetall.de

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Negele Hartmetall-Technik

Löwenstr. 94
70597 Stuttgart (Germany)

Telephone +49 (0) 711 97948 – 0

E-Mail: kontakt@negele-hartmetall.de

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