2.0% lanthanum wolfram electrode (Wolfram electrodes), which is also known as WL electrode, contains a minimum of 96.50% tungsten and 1.80% to 2.20% lanthanum.
(Color Code: Black (WL10);Gold(WL15); BLUE ( WL20 tungsten electrodes)
Lanthanated tungsten electrodes have excellent arc starting, a low burn off rate, good arc stability, and excellent reignition characteristics—many of the same advantages as ceriated electrodes. Lanthanated electrodes also share the conductivity characteristics of 2 % thoriated tungsten. In some cases, lanthanated can replace 2% thoriated without having to make significant tig welding program changes.
These electrodes are ideal if you want to optimize your welding capabilities. They work well on AC or DC electrode negative with a pointed end, or they can be balled for use with AC sine wave power sources. Lanthanated tungsten maintains a sharpened point well, which is an advantage for welding steel and stainless steel on DC or AC from square wave power sources.
Parameters of Lanthanated tungsten Electrode
Tolerances of Lanthanated tungsten Electrode
1. Lower electronic functions
2. Higher crystallization temperature
3. Better conductivity
4. Superior mechanical cutting performance
Unlike thoriated tungsten, these WL 20 tungsten electrodes are suitable for AC welding and, like ceriated electrodes, allow for the arc to be started and maintained at lower voltages.