Los electrodos de tungsteno

Type	Brand	Color	Chemical Composition（％）			Sizes (mm)	Surface	Features
Type	Brand	Color	Rare Earth	Impurities	W	Sizes (mm)	Surface	Features
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.
Thoriated Tungsten	HWTh20	Red	1.8~2.2ThO2	≤0.05	the rest	0.8~15	D,E G,S
Lantano 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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