Pure Tungsten Electrodes

1、Pure Tungsten Electrodes Characteristics

1)Pure Tungsten Electrodes, the least expensive of all tungsten, is generally used in the AC welding of aluminum and magnesium alloys.
2)Yttriated Tungsten is primarily used in military and aviation industry with narrow arc beam,high compressing strength,highest welding penetration at medium and high current.
3)The performances of Composite Electrodes in welding can be much improved by adding two or more rare earth oxides which are mutually completementary.

Type of Electrode	Designation	Oxide Additive		Impurities Content	Tungsten Content	Color Sign
Type of Electrode	Designation	Category	Content %	Impurities Content	Tungsten Content	Color Sign
Pure Tungsten	WP	--	--	<0.20	Balance	Green
Yttriated Tungsten	WY20	Y2O3	1.8-2.2	<0.20	Balance	Blue
Composite	--	--	1.5-3.0	<0.20	Balance	--

2、Product Standard

ISO 6848 ANSI/AWS A5.12/A5.12M-98

3、Size

1)Diameter:? 0.5-25mm
2)Length:?? 150mm, 175mm, 178mm,? any other length at customer request.

4、Recommended Tungsten Electrodes for Various Welding Currents

Diamter of Electrode		DC(A)		AC(A)
In	Mm	Straight Polarity(-)	Reverse Polarity(+)	Unbalanced Waves	Balanced Waves
0.04"	1.0	15-80	?	10-80	20-60
1/16"	1.6	60-150	10-18	50-120	40-100
0.079"	2.0	100-200	12-20	70-160	60-130
3/32"	2.4	150-250	15-25	80-200	80-150
1/8"	3.2	220-350	20-35	150-270	120-200
5/32"	4.0	350-500	35-50	220-350	170-260
3/16"	4.8	420-650	45-65	240-420	220-340
1/4"	6.4	600-900	65-100	360-560	250-450

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