Q790F49 - ESAB WZ3 Zirconiated Tungsten Electrodes 3.2mm (Pack of 10)

High-Performance Zirconiated Tungsten for AC Applications

The ESAB WZ3 Zirconiated Tungsten Electrodes are engineered for professional TIG welding applications requiring alternating current (AC). Specifically formulated with approximately 0.3% Zirconium Oxide (ZrO2), these electrodes offer a significant performance upgrade over traditional pure tungsten (green) electrodes. The addition of zirconium oxide enhances the electrode's ability to emit electrons, resulting in a more stable arc and easier starting, particularly in critical applications involving aluminum and magnesium alloys.

One of the primary technical advantages of WZ3 tungsten is its superior resistance to contamination and tungsten spitting. When subjected to the high heat of AC welding, pure tungsten can often degrade or split, leading to weld inclusions. The WZ3 formulation mitigates this by maintaining a clean, balled tip geometry even under high amperage loads. This structural integrity ensures consistent weld quality and reduces the frequency of electrode preparation and replacement, thereby increasing overall productivity in industrial environments.

These electrodes feature a precision ground finish, denoted by the "GR" specification, which guarantees a uniform diameter of 3.2mm (1/8 inch) along the entire 175mm length. A ground finish is essential for consistent electrical conductivity and fitment within standard collets and collet bodies. The 3.2mm diameter is robust enough to handle significant amperage, making it an ideal choice for structural aluminum fabrication, automotive repair, and aerospace components where weld integrity is paramount.

Supplied in a protective pack of 10, these electrodes are color-coded (typically Brown for WZ3 standards) for easy identification in the workshop. They are strictly recommended for AC welding and are not suitable for DC applications. By choosing ESAB WZ3 electrodes, fabricators ensure they are using consumables that meet rigorous industrial standards for reliability and performance.