| | Brand | Color | Chemical Composition(percent) | Sizes
(mm) | Surface | Features | | Rare Earth | Impurities | W | Pure
Tungsten | WP | 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 | WTh10 | 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. | | WTh20 | Red | 1.8~2.2ThO2 | ≤ 0.05 | the rest | 0.8~15 | Lanthanum
Tungsten | WLa10 | 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. | | WLa15 | Golden
Yellow | 1.3~1.7 La2O3 | ≤ 0.05 | the rest | 0.8~15 | | WLa20 | Blue | 1.8~2.2 La2O3 | ≤ 0.05 | the rest | 0.8~15 | Cerium
Tungsten | WCe10 | 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. | | WCe15 | Orange | 1.3~1.7CeO2 | ≤ 0.05 | the rest | 0.8~15 | | WCe20 | Grey | 1.8~2.2CeO2 | ≤ 0.05 | the rest | 0.8~15 | Yttrium
Tungsten | WY20 | 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 | WMX | 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 | |
TIG Welding Red Tungsten Electrodes Picture:
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