Tungsten Electrode Types — WP, WT20, WC20, WL20, WZ8 and WY20
Tongke supplies six tungsten electrode families covering AC and DC TIG welding. All types are produced to AWS A5.12 / ISO 6848, ground to h7 diameter tolerance and supplied with color coded tips. Standard diameters run from 1.0 mm to 6.4 mm in 150 mm and 175 mm lengths.
Order by type designation and standard. Confirm tip marking and packaging with your quotation.
| Type | Color code | Family | Main addition | Current | Typical duty |
|---|---|---|---|---|---|
| WP | Green | Pure | Pure tungsten, W ≥ 99.5% | AC (mainly) / DC | Aluminium & magnesium on AC |
| WT20 | Red | Thoriated | ThO₂ 2% (nominal) | DCEN (mainly) | Steel, stainless & alloy on DC, high current |
| WC20 | Grey | Ceriated | CeO₂ 2% (nominal) | DCEN, best at low current | Thin sheet and low-current DC work |
| WL15 / WL20 | Gold (WL15) / Blue (WL20) | Lanthanated | La₂O₃ 1.5–2% (nominal) | DC & AC | General purpose DC & AC, manual and automated |
| WZ8 | White | Zirconiated | ZrO₂ 0.8% (nominal) | AC & DC | High-current AC on Al/Mg, contamination resistance |
| WY20 | Confirm marking | Yttriated | Y₂O₃ 2% (nominal) | DC (mainly) | Precision, aerospace and critical DC welding |
Choose a tungsten electrode family
Pure Tungsten Electrode
The classic choice for AC welding of aluminium and magnesium.
View specification →
Thoriated Tungsten Electrode
Easy arc starting and high current capacity on DC steel and alloy work.
View specification →
Ceriated Tungsten Electrode
Excellent low-current starting - the non-radioactive alternative to thoriated.
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Lanthanated Tungsten Electrode
The versatile general-purpose electrode for manual and automated welding.
View specification →Order by type designation and standard. Confirm tip marking and packaging with your quotation.
Zirconiated Tungsten Electrode
Holds a stable ball tip on AC and resists contamination at high current.
View specification →Order by type designation and standard. Confirm tip marking and packaging with your quotation.
Yttriated Tungsten Electrode
A concentrated, stable arc for precision and critical DC applications.
View specification →Common to every type we supply
Precision ground surface
Centerless-ground, bright finish with diameter tolerance h7 and length tolerance ±1 mm — electrodes slide smoothly into gas lenses and collets.
Consistent chemistry
Oxide additions are held to the nominal value of each type designation; certified analysis can accompany each shipment on request.
Custom sizes and lengths
Non-standard diameters, lengths and tip preparations are available on request — tell us what your production line needs.
Export-ready packing
10-piece plastic boxes, 100-piece boxes or bulk cartons, labeled with type, diameter and length. Neutral packing and OEM boxes available.
Need a quotation for tungsten electrodes?
Tell us the type, diameter, length and quantity — mixed sizes are welcome. We reply with specification, price and lead time.