Composition
WZr3 WZr8
Color Brown White
Remainder
Zirconiated tungsten electrodes (AWS classification EWZr-1) contain a minimum of 99.10% tungsten and 0.7-0.9% zirconium. A Zirconiated tungsten electrode produces an extremely stable arc and resists tungsten spitting. It is ideal for AC welding as it retains a balled tip and has a high resistance to contamination. Its current carrying capability is equal to or even greater than thoriated tungsten. Under no circumstances is zirconiated recommended for DC welding.
Model | Oxide addition | Contents % | Impurites % | Tungsten % | Color |
WZr3 | ZrO2 | 0.15-0.50 | ≤0.02 | Remainder | Brown |
WZr8 | ZrO2 | 0.70-0.90 | ≤0.02 | Remainder | White |
