Especially suitable for pipe welding Item Details Lanthanum Oxide Doped Tungsten Electrodes Containing 1.2% to 1.6% LA2O3 By Weight. EWLa-1.5 designates a tungsten electrode containing 1.3%-1.7% by weight of dispersed lanthanum oxide (La2O3) for enhanced arc starting and stability, reduced tip erosion rate, and extended operating current range It's easy to start arc and sustain the stability at low current. TIG Tungsten Purple WL15 1.5% Weldstone 1.6Mm X 175Mm - 10 Pack Lanthanated Tungsten Electrodes TIG Welding Electrodes Gold YESWELDER TIG Welding Tungsten Electrode 1.5% Lanthanated .040″x7″ (Gold, WL15/EWLa-1.5) 10-pk WL15 EWLa-1.5 Electrodes 10 Pack 10 pcs in one package , AWS A5., 12 M/A5., 12:2009 WLa Lanthanated Tungsten Electrodes | Xcel-Arc® Welding Supplies When welding the pipeline, welders are quite satisfied with this lanthanated tungsten, due to the longer working time to reduce the downtime. Lanthana has better creep resistance, strong ductility, lower stirring rate, therefore the tip temperature of lanthanated is lower, which helps to prevent grain from being lager, the service life of electrode can be increased substantially.