Comparison Among Tungsten Electrodes

Composite Tungsten Electrodes Picture

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.