Tungsten Electrode Chemical Components
SSTS PART        NO.	Product                        Name	Added   Impurity	Impurity      Quantity	Other       impurities	Tungsten	Electric  discharged              power	Color
STWD-C20	2% Ceriated        Tungsten Electrode	CeO2	1.8-2.2	<0.20%	Rem	2.7-2.8	Gray
STWD-L10	1% Lanthanated   Tungsten Electrode	La2O3	0.8-1.2	<0.20%	Rem	2.6-2.7	Black
STWD-L15	1.5% Lanthanated      Tungsten Electrode	La2O3	1.3-1.7	<0.20%	Rem	2.8-3.0	Golden
STWD-L20	2% Lanthanated          Tungsten Electrode	La2O3	1.8-2.2	<0.20%	Rem	2.8-3.2	Sky-Blue
STWD-Y20	Yttriated   Tungsten Electrode	YO2	1.8-2.2	<0.20%	Rem	2.0-3.9	Blue
STWD-T20	2% Thoriated   Tungsten Electrode	ThO2	1.70-2.20%	<0.20%	Rem	2.0-3.0	Red
STWD-G8	Pure   Tungsten Electrode	/	/	<0.20%	Rem	4.5	Green
STWD-Z8W	Zirconiated   Tungsten Electrode	ZrO2	0.7-0.9	<0.20%	Rem	2.5-3.0	White
STWD-Z8B	Zirconiated   Tungsten Electrode	ZrO2	0.2-0.4	<0.20%	Rem	2.5-3.0	Brown

how to Choose the best suitable Tungsten                                                         Electrode and Gas for different metal?
Metal	Metal   Thickness	Current	Pure   Tungsten   Electrode	Ceriated   Tungsten   Electrode	Thoriated   Rungsten   Electrode	Zirconiated    Tungsten      Electrode	Gas   Porcelain    Purity %	Protect     Gas
Aluminum,           Aluminum alloy	All thickness	AC	√			√	99.9	Ar+He,Ar
	Thick	DCSP		√	√		99.9	Ar+He,Ar
	Thin	DCSP		√	√		99.9	Ar
Copper,Copper                 alloy	All thickness	DCSP		√	√		99.7	Ar+He,Ar
	Thin	AC	√			√	99.7	Ar
Magnesium Alloy	All thickness	AC	√			√	99.9	Ar
	Thin	DCRP		√	√		99.9	Ar
Nickel, Nickel alloy	All thickness	DCRP		√	√		99.9	Ar
Low carbon, Low           alloy steel	All thickness	DCRP		√	√		99.8	Ar+He,Ar
	Thin	AC	√			√	99.8	Ar
Stainless steel,    Heat resistant           steel	All thickness	DCRP		√	√		99.7	Ar+He,Ar
	Thin	AC	√			√	99.7	Ar
Titanium,Titanium            alloy	All thickness	DCRP		√	√		99.98	Ar