Gold tip WL15 tungsten electrodes with 1.5% lanthanum oxide keep a sharp, focused arc over the widest AC and DC current range. Non-radioactive, no tip migration, available from 1.6mm to 4.0mm in 150mm and 175mm lengths, supplied 10 pcs per box.
WL15 is a lanthanated tungsten electrode identified by its gold tip, containing 1.5% lanthanum oxide. It conducts heat better than thoriated and ceriated grades, holds a stable arc from low amperage up to high current, and does not form a molten oxide pool at the tip. This makes it the most versatile grade for mixed production work where stainless steel, carbon steel and aluminum are welded on the same machine, including orbital pipe welding and CNC automatic welding.
| Grade | WL15 (1.5% Lanthanated Tungsten Electrode) |
|---|---|
| Lanthanum Oxide Content | 1.3% – 1.7% La2O3 |
| Diameter | 1.0 / 1.6 / 2.0 / 2.4 / 3.0 / 3.2 / 4.0 mm (0.040" / 1/16" / 2.4mm 3/32" / 1/8") |
| Length | 150mm / 175mm / 7 inch |
| Tip Color | Gold |
| Operating Current | AC / DC, 20A – 400A depending on diameter |
| Application | Stainless steel, carbon steel, aluminum, titanium, orbital pipe and CNC automatic TIG welding |
| Standard | AWS A5.12 EWLa-1.5 / ISO 6848 WL15 |
| Packaging | 10 pcs per plastic box, 10 boxes per inner carton |
| HS Code | 8101.99 |
Thoriated WT20 (red tip) offers strong contamination resistance but is radioactive and needs careful disposal. Ceriated WC20 (gray tip) starts easily at low amperage and suits aluminum under 200A. Lanthanated WL15 and WL20 (gold tip) cover the widest AC and DC range and are the recommended general purpose replacement for thoriated in most workshops.
| Tip Color | Grade | Typical Use |
|---|---|---|
| Green | WP Pure Tungsten | AC aluminum, sine wave machines |
| Red | WT20 2% Thoriated | DC steel and stainless steel |
| Gray | WC20 2% Ceriated | DC and AC, thin sheet at low amperage |
| Gold | WL15 / WL20 Lanthanated | Wide AC and DC range, general purpose |
| White | WZ8 Zirconiated | AC aluminum at high current |
| Diameter | DC Current (A) | AC Current (A) |
|---|---|---|
| 1.6mm (1/16") | 80 – 160 | 70 – 130 |
| 2.4mm (3/32") | 160 – 250 | 140 – 230 |
| 3.2mm (1/8") | 250 – 400 | 230 – 350 |
Yes. It runs on AC for aluminum and on DC for steel, which suits shops welding both materials.
Yes. WL15 replaces 2% thoriated WT20 on DC work with no parameter change and no radioactive handling.
Usually caused by dipping the tip into the weld pool, wrong polarity, or grinding across the wheel instead of lengthwise.
Yes. 4.0mm, 1/16", 3/32" and 1/8" are available for bulk order.
Wholesale price is quoted per kg or per box depending on volume. OEM printing, private label and custom box quantities are supported. MOQ is 10 boxes for stock sizes, with 15 to 25 days delivery. MSDS and material certificate are available for customs clearance, and a free sample is available for testing before bulk order.
