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
Category Content %
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