Ceriated Tungsten Electrode is a non-radioactive material. It is known to be especially good for DC welding with low amperage because it starts very easily at low amps and usually requires about 10% less amps to operate than thoriated material.
Ceriated tungsten electrodes (AWS classification EWCe-2) contain a minimum of 97.30 percent tungsten and 1.80 to 2.20 percent cerium and are referred to as 2 percent ceriated. These electrodes perform best in DC welding at low current settings but can be used proficiently in AC processes. With its excellent arc starts at low amperages, ceriated tungsten has become popular in such applications as orbital tube and pipe fabricating, thin sheet metal work, and jobs involving small and delicate parts. Like thorium, it is best used to weld carbon steel, stainless steel, nickel alloys, and titanium, and in some cases it can replace 2 percent thoriated electrodes. Ceriated tungsten has slightly different electrical characteristics than thorium, but most welders can't tell the difference.
Using ceriated electrodes at higher amperages is not recommended because higher amperages cause the oxides to migrate quickly to the heat at the tip, removing the oxide content and nullifying its process benefits.
Cerium tungsten electrode is mainly used in low current DC welding. Cerium tungsten at low current arc has a very good performance, and thus become the most rail pipe welding equipment manufacturer's standard, in addition, it can also be used for other low-current applications such as precision small parts welding.
Parameters of Ceriated wolfram Electrode
Electrode doped with name
amount of doping
WC20 tungsten electrodes
• Low electronic function
• Good conductivity
• Good electron emission ability
• Good mechanical cutting performance
• High elastic modulus, Low vapour pressure
• High recrystallization temperature
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