Lanthanum Tungsten Electrode is well known its good welding performance.It is the electrode added with 1-2% of LaO.The poer of its electronic transgression is 2.7-2.8ev.Bearing the closes features to those of thorium-Tungsten Electrode.Its arc features and burn spoilage endurance are better when used in small or medium currents condition.
Lanthanaum-Tungsten Electrode is the most prodising substiutin product of thorium-tungsten electrode because of its nonradiation.
Its andother advantage is the endurance of high current but low burn spoilage rate.
| Trademark | Added impurity | Impurity quantity | Other impurities | Tungsten | Electric discharged power | color sign |
| WL10 | La2O3 | 0.8-1.2 | < 0.20 | The rest | 2.6-2.7 | Black |
| WL15 | La2O3 | 1.3-1.7 | < 0.20 | The rest | 2.8-3.0 | Goldyellow |
| WL20 | La2O3 | 1.8-2.2 | < 0.20 | The rest | 2.8-3.2 | Skyblue |
