1、Thoriated Tungsten Electrode Characteristics
Thoriated Tungsten is the most commonly used tungsten in America and some other countries and is a good general use tungsten. Especially, it performs well when overloaded with extra amperage. However,since it is a low-level radioavtive hazard many users have switched to other alternatives. This tungsten is used primarily for DC welding of carbon & stainless steels, nickel alloys and titanium,etc..
Designation |
Oxide Additive |
Impurities Content |
Tungsten Content |
Color Sign |
Category |
Content % |
WT20 |
ThO2 |
1.7-2.2 |
<0.20 |
Balance |
Red |
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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