| material： | Pure tungsten or Tungsten alloy |
| Specification： | Ф(0.5-25)x150/175/178mm |
| Common size: Ф1.0/1.6/2.0/2.4/3.2/4.0/4.8/6.4*L150/175mm | |
| Customized size: As customer’s drawing | |
| Grade： | WT10 WT20 WT30 WT40 WC20 WL10 WL20 WZ3 WZ8 WP WY20 WX |
Pure tungsten electrode is most widely used in AC welding; When pure tungsten electrode is heated, the welding ball becomes sharp to provide a balanced waveform AC welding, and the arc is stable; Pure tungsten electrode also provides good arc stability for sine wave AC welding of aluminum and magnesium.
| type | brand | Color code | Chemical composition（％） | size (mm) | surface | features | ||
| Rare earth | impurity | W | ||||||
| Puretungsten | HW11 | green | － | ≤0.05 | 0.8~15 | D,E G,S | Pure tungsten electrode is only used as welding electrode under AC condition or as resistance welding electrode. | |
| Thorium tungsten | HWTh10 | yellow | 0.9~1.1ThO2 | ≤0.05 | margin | 0.8~15 | D,E G,S | Thorium tungsten electrode is the tungsten electrode with the best welding performance so far, and it occupies the highest market share in the world. However, because thorium tungsten electrode |
| HWTh20 | red | 1.8~2.2ThO2 | ≤0.05 | margin | 0.8~15 | |||
| Lanthanated tungsten | HWLa10 | black | 0.8~1.2La2O3 | ≤0.05 | margin | 0.8~15 | D,E G,S | Non-radioactive, excellent electrical conductivity and welding ability, high current carrying capacity, lowest burn area ratio, replacing thorium tungsten electrode, mainly used for DC welding. |
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