![](https://tungsten.de/_Resources/Persistent/0/7/d/c/07dc7d3b23e0c837de67dd0b1cd40e8d1c43d76e/WT20-1498x1750-565x660.jpg)
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WT20 - red
The ignition-friendly one
- Colour: red
- For carbon steel, stainless steels, silicon bronze, copper, bronze, titanium.
- Composition: W + 2% thorium
- Due to its very good ignition properties, this is a widely used type of electrode, which is, however, increasingly the subject of discussion due to its 2% radioactive thorium content.
- This type can now be successfully replaced by radiation-free electrodes, such as Lymox® or WL15.