The characteristics of the tungsten electrode, tungsten making it very suitable for welding and other similar tiG electrode materials such work. tungsten electrodes, including
pure tungsten electrode、lanthanated tungsten electrodes、thoriated
tungsten electrode
、yttrium tungsten electrode 、zirconiated tungsten electrodes.
Type |
Brand |
Color |
Chemical Composition（％） |
Sizes
(mm) |
Surface |
Features |
Rare Earth |
Impurities |
W |
Pure
Tungsten |
HW11 |
Green |
－ |
≤0.05 |
the rest |
0.8~15 |
D,E
G,S |
Non-radioactive;suitable for AC welding of aluminum, magnesium, and their alloy |
Thoriated
Tungsten |
HWTh10 |
Yellow |
0.9~1.1ThO2 |
≤0.05 |
the rest |
0.8~15 |
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 |
1.8~2.2ThO2 |
≤0.05 |
the rest |
0.8~15 |
Lanthanum
Tungsten |
HWLa10 |
Black |
0.8~1.2La2O3 |
≤0.05 |
the rest |
0.8~15 |
D,E
G,S |
Non-radioactive;excellent electric conductivity and welding capacity;high current-carrying capacity;minimum ratio of burnt area;substitute for thoriated tungsten electrode;mainly used in DC welding. |
HWLa15 |
Golden
Yellow |
1.3~1.7 La2O3 |
≤0.05 |
the rest |
0.8~15 |
HWLa20 |
Blue |
1.8~2.2 La2O3 |
≤0.05 |
the rest |
0.8~15 |
Cerium
Tungsten |
HWCe10 |
Pink |
0.8~1.2CeO2 |
≤0.05 |
the rest |
0.8~15 |
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 |
1.3~1.7CeO2 |
≤0.05 |
the rest |
0.8~15 |
HWCe20 |
Grey |
1.8~2.2CeO2 |
≤0.05 |
the rest |
0.8~15 |
Yttrium
Tungsten |
HWY20 |
Sky
Blue |
1.8~2.2Y2O3 |
≤0.05 |
the rest |
0.8~15 |
D,E
G,S |
Non-radioactive;long and slim arc beam with high compression;deeper burning groove under medium and high current circumstances. |
Compound
Rare Earth
Tungsten |
HWMX |
Cyan |
1.0~5.0MOx |
≤0.05 |
the rest |
0.8~15 |
D,E
G,S |
Compound rare-earth tungsten electrode;different additives contributing to better performance of tungsten electrode |
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