Thorium-Dioxide-Doped Tungsten Electrodes Containing 1.8% – 2.2% THO2. The most common type of electrode used on carbon and stainless steel. The higher thoria content in the EWTh-2 electrode causes the operating characteristic improvements to be more pronounced than in the lower thoria content EWTh-1.To use Thoriated electrodes for alternating current welding
