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tungsten electrode is the most widely used welding material.
Characteristic: Thoriated tungsten electrode is the most widely used welding material. 2% Thoriated Tungsten contains 2% thorium oxide (ThO 2 ) that is dispersed inside the whole length of the Tungsten rod. 2% Tungsten electrode provides excellent resistance from weld pool contamination and offers the welder easier arc starting capabilities and a more stable arc.
1) 2% thoriated tungsten contains a nominal 2wt-% or thorium oxide (tho2) that is evenly dispersed throughout the entire length of the tungsten. The most common type of tungsten used today. Provides excellent resistance from weld pool contamination while at the same time offers the welder easier arc starting capabilities and a more stable arc. Generally used for DC electrode negative or straight polarity applications such as carbon and stainless steels, nickel alloys and titanium.
2) color mark: Wt20 (red)
3) other impurity: _0.20%
4) diameter: 1.0 - 12.0mm
5) length: 50.00, 75.00, 150.00, 175.00mm
6) quality of surface: Ground finish, polish finish
Cerium-Tungsten Electrodes
Trade mark |
Added |
Impurity |
Other |
Tungsten |
Electric |
Color |
WC20 |
CeO2 |
1.80 - 2.20% |
<0.20% |
The rest |
2.7 - 2.8 |
Grey |
Lanthanated Tungsten Electrodes
Trade mark |
Added |
Impurity |
Other |
Tungsten |
Electric |
Color |
WL10 |
La2O3 |
0.80 - 1.20% |
<0.20% |
The rest |
2.6 - 2.7 |
Black |
WL15 |
La2O3 |
1.30 - 1.70% |
<0.20% |
The rest |
2.8 - 3.0 |
Yellow |
WL20 |
La2O3 |
1.80 - 2.20% |
<0.20% |
The rest |
2.8 - 3.2 |
Sky blue |
Zirconiated Tungsten Electrodes
.
Trade mark |
Added |
Impurity quantity |
Other |
Tungsten |
Electric |
Color sign |
WZ3 |
ZrO2 |
0.20 - 0.40% |
<0.20% |
The rest |
2.5 - 3.0 |
Brown |
WZ8 |
ZrO2 |
0.70 - 0.90% |
<0.20% |
The rest |
2.5 - 3.0 |
White |
Thoriated tungsten
Trade mark |
ThO2 Content(%) |
Color sign |
WT10 |
0.90 - 1.20 |
Primary |
WT20 |
1.80 - 2.20 |
Red |
WT30 |
2.80 - 3.20 |
Purple |
WT40 |
3.80 - 4.20 |
Orange Primary |
Pure Tungsten Electrodes:
Electrode Name |
Trade |
Added impurity |
Impurity quantity |
Other impurities |
Tungsten |
Electric discharged power |
Color sign |
Pure Tungsten Electrode |
WP |
-- |
-- |
<0.20% |
The rest |
4.5 |
Green |
Yttrium-Tungsten Electrode |
WY20 |
YO2 |
1.80 - 2.20% |
<0.20% |
The rest |
2.0 - 3.9 |
Blue |
Composite Electrode |
WRex |
ReOx |
1.00 - 4.00% |
<0.20% |
The rest |
2.45 - 3.1 |
|
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