Composition
         WC20
         Color tip - Grey
         Remainder
 
2% ceriated tungsten electrodes (AWS classification EWCe-2) contain a minimum of 97.30% tungsten and 1.80 - 2.20% cerium. These electrodes perform best in DC welding at low current settings but can be used proficiently in AC or DC processes. With its excellent arc starts at low amperages,ceriated tungsten has become popular in such applications as orbital tube ,pipe manufacturing, thin sheet metal work ,jobs where small and delicate parts are welded. Like thorium, it is best used to weld carbon and stainless steels, nickel alloys and titanium, making it an obvious replacement for 2% thoriated electrodes. Comparing with WT20 , It’s on-radioactive material. Electron emission ability is higher than thorium tungsten, with low arc voltage and arc stability.Positive polarity, allowable current density is higher than thorium-tungsten 5%-8%.
Model
Oxide addition
Contents %
Impurites %
Tungsten %
Color
WC20
CeO2
1.80-2.20
≤0.02
余量Remainder
灰/Grey