What type of tungsten electrode is recommended?
(top) For AC welding of Aluminum with older sine wave type machines use pure tungsten or Zirconium doped tungsten. For advanced square wave machines such as the Miller Dynasty use the ceriated or lanthanated tungsten’s. For welding with DC electrode negative use the thoriated electrodes. Thoria however is radioactive so if a non-radioactive tungsten is requested then either the lanthanated or ceriated tungsten should be used.
