Tungsten Electrode
Description
Wherever finely crafted weld seams are created, high-quality materials are welded and precisely welded joints are to be created. Tungsten electrodes form a clean, balled tip when heated. They offer good arc stability for low- to medium-amperage AC(alternating current) welding on aluminum and magnesium. The electrodes insert into a compatible TIG (tungsten inert gas) torch that is connected to a welder that supplies current to the electrode. The type of electrode used depends on the base material and thickness of the workpiece, as well as the type of output current provided by the welder.
As a worldwide supplier of tungsten products supplier, Alfa Chemistry supplies tungsten electrodes and tungsten electrodes with some rare earth oxides.
Size and Tolerance
| Diameter (mm) | Diameter Tolerance (mm) | Length (mm) | Length Tolerance (mm) |
|---|---|---|---|
| 1.00 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 1.60 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 2.00 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 2.40 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 3.20 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 4.00 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 4.80 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 6.40 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 8.00 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
| 10.00 | ±0.05 | 50, 75, 150, 175, 178 | ±0.10 |
Specifications
- Pure Tungsten Electrode
Pure tungsten electrodes have the features of non-addition, requiring a high voltage for arc derivation, low current capacity, and easily burnt. They are suitable for AC welding of aluminum, magnesium, and their alloys.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| H3N5 | --- | --- | <0.05% | Bal. | 4.5 eV | Green |
- Lanthanated-Tungsten Electrode
Lanthanated-Tungsten electrodes are similar to thoriated tungsten electrodes with the characters of on-radioactive, excellent electric conductivity, welding performance, high carrying capability, and a minimum ratio of burnt area. They are mainly used for DC welding.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WLa10 | La2O3 | 0.8-1.2% | <0.05% | Bal. | 2.8 eV-3.2 eV | Black |
| WLa15 | La2O3 | 1.3-1.7% | <0.05% | Bal. | 2.8 eV-3.2 eV | Golden |
| WLa20 | La2O3 | 1.8-2.2% | <0.05% | Bal. | 2.8 eV-3.2 eV | Sky blue |
- Multi-compound Rare-earth Tungsten Electrode
The compound rare earth tungsten electrodes are doped with various oxides, with excellent welding performance. They are substitute of radioactive thoriated Tungsten electrode, and other tungsten electrodes.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WXY30 | Multi-compound rare-earth | 1.0-4.0% | <0.05% | Bal. | 2.45 eV-3.10 eV | Light blue |
- Ceriated-Tungsten Electrode
Ceriated-Tungsten electrodes, with easier arc ignition, and low arc maintaining current under low current circumstances, are substituted for thoriated tungsten electrode, especially for DC welding.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WCe2O | CeO2 | 1.8-2.2% | <0.05% | Bal. | 2.7 eV-2.8 eV | Gray |
- Thoriated-Tungsten Electrode
Compared with pure tungsten electrodes, the welding performance of thoriated-tungsten electrodes is more excellent with the advantages of easy operating, stable electric arc, and long-life. They are mainly applied for carbon steel, stainless steel, nickel alloy.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WTh10 | ThO2 | 0.9-1.2% | <0.05% | Bal. | 2.0 eV-3.9 eV | Yellow |
| WTh20 | ThO2 | 1.8-2.2% | <0.05% | Bal. | 2.0 eV-3.9 eV | Red |
| WTh30 | ThO2 | 2.8-3.2% | <0.05% | Bal. | 2.0 eV-3.9 eV | Purple |
| WTh40 | ThO2 | 3.8-4.2% | <0.05% | Bal. | 2.0 eV-3.9 eV | Orange |
- Zirconiated-Tungsten Electrode
Zirconiated-Tungsten electrodes are suitable for AC welding of aluminum, magnesium, and their alloys.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WZr3 | ZrO2 | 0.2-0.4% | <0.05% | Bal. | 2.5 eV-3.0 eV | Brown |
| WZr8 | ZrO2 | 0.7-0.9% | <0.05% | Bal. | 2.5 eV-3.0 eV | White |
- Yttrium-Tungsten Electrode
Yttrium-Tungsten electrodes are mainly used for military industry and aerospace industry.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WY20 | Y2O3 | 1.8-2.2% | <0.05% | Bal. | 2.0 eV-3.9 eV | Blue |
- Black Tungsten Electrode
Black tungsten electrodes are manufactured by forging, drawing, coarse grinding, and fine grinding process. They can be used for argon arc welding under the low current circumstance. The usage condition is the same as kinds of tungsten electrode.
| Type | Oxide Addition | Dopant | Impurities | W | Electric Work Function | Color |
|---|---|---|---|---|---|---|
| WCe20 | CeO2 | 1.8-2.2% | <0.05% | Bal. | 2.7 eV-2.8 eV | Black |
| WLa15 | La2O3 | 1.3-1.7% | <0.05% | Bal. | 2.8 eV-3.0 eV | Black |
| WTh20 | ThO2 | 1.8-2.2% | <0.05% | Bal. | 2.0 eV-3.9 eV | Black |