Lanthanum Tungsten Electrode
Lanthanated tungsten electrode is a type of tungsten electrode that contains small amounts of lanthanum. Lanthanated tungsten electrode are nonradioactive and maintain a sharp tip. It offers long electrode life under heavy or pulsing amperage loads. It has the ability to resist thermal shock which provides the user with excellent ignition with a lower burn off rate.
2% Lanthanated Tungsten (TL2) – gold tip – 2% lanthanated is probably the most popular substitute for 2% thoriated tungsten. It offers good arc starting characteristics and longer life than 2% thoriated. It can be used for both AC and DC welding with both inverter and transformer power sources.
The lanthanated tungsten electrode is becoming more popular in the circle of welding in the world soon after they were developed, because of their good welding performance. The electric conductivity of lanthanated tungsten electrode is most closed to that of 2% thoriated Tungsten electrode. Welders can easily replace thoriated tungsten electrode with lanthanated tungsten electrode at either AC or DC and not have to make any welding program changes.
The radioactivity from thoriated tungsten electrode can thus be avoided. Another advantage of lanthanated tungsten electrode is being able to bear high current and having the lowest burn-loss rate.
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Specification for Tungsten and Oxide Dispersed Tungsten electrode for Arc Welding and Cutting