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Thoriated Tungsten Electrode
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:? 0.5-25mm2)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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