Comparison Among Tungsten Electrodes
Composite tungsten electrodes belong to tungsten electrodes. They have commons and differences when compared with other tungsten electrodes. Their application, tip colors and impurities are all the points to be compared. There is one point should be noticed that is composite tungsten electrodes have taken environment protection into consideration.
| Type | Class | Color | Chemical Composition | Surface | Feature | ||
| Rare Earth |
Impurities | W | |||||
| Compound Rare Earth Tungsten |
HWMX | Cyan | 1.0~5.0 MOx |
≤0.05 | the rest | D,E G,S |
Compound rare-earth tungsten electrode; different additives contributing to better performance of tungsten electrode |
| Pure Tungsten |
HW11 | Green | 0 | ≤0.05 | the rest | D,E G,S |
Non-radioactive; suitable for AC welding of aluminum,magnesium, and their alloy |
| Thoriated Tungsten |
HWTh10 | Yellow | 0.9~1.1 ThO2 |
≤0.05 | the rest | D,E G,S |
Excellent electron emission and overall performances; high current-carrying capacity;radioactivity;suitable for DC welding of carbon steel, stainless steel, nickel alloy and titanium alloy. |
| HWTh20 | Red | 1.8~2.2 ThO2 |
≤0.05 | the rest | |||
| Lanthanum Tungsten |
HWLa10 | Black | 0.8~1.2 La2O3 |
≤0.05 | the rest | D,E G,S |
Non-radioactive; excellent electric conductivity and welding capacity; high current-carrying capacity; minimum ratio of burnt area; substitute for throated tungsten electrode; mainly used in DC welding. |
| HWLa15 | Golden Yellow |
1.3~1.7 La2O3 |
≤0.05 | the rest | |||
| HWLa20 | Blue | 1.8~2.2 La2O3 |
≤0.05 | the rest | |||
| Cerium Tungsten |
HWCe10 | Pink | 0.8~1.2 CeO2 |
≤0.05 | the rest | D,E G,S |
Non-radioactive; easier arc initiation under low current circumstances, and low arc-maintaining current; suitable for the welding of pipelines, small components and discontinuous welding. |
| HWCe15 | Orange | 1.3~1.7 CeO2 |
≤0.05 | the rest | |||
| HWCe20 | Grey | 1.8~2.2 CeO2 |
≤0.05 | the rest | |||
| Yttrium Tungsten |
HWY20 | Sky Blue |
1.8~2.2 Y2O3 |
≤0.05 | the rest | D,E G,S |
Non-radioactive; long and slim arc beam with high compression; deeper burning groove under medium and high current circumstances. |
Related Products:
Their performances can be much improved by adding two or more rare earth oxides which are mutually complementary.
Cerium tungsten electrodes are tungsten electrodes with 2% CeO2, which are non-radioactive materials.
Thoriated tungsten electrodes are electrodes made of tungsten and thoria by different proportion and the most widely used ones are 2% thoriated tungsten electrodes.
Zirconiated tungsten electrode is also called the tungsten zirconiated electrode.