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Sold in 3-packs of ten electrodes, .040" Blue Demon EWLa-1.5 is a tungsten electrode containing 1.3-1.5 wt-% of dispersed lanthanum oxide (La2O3) for enhanced arc starting and stability, reduced tip erosion rate, and extended operating current range.
These electrodes can be used as non radioactive substitutes for 2% thoriated tungsten as the operating characteristics are very similar.
Lanthanated tungsten can be used for both DC and AC applications.