Tungsten Zirconiated – Alum White | 4.0mm TIG Welding Electrode

Premium Zirconiated Tungsten Electrode (White Tip) – 4.0mm Diameter

Engineered for superior arc stability and performance, our Zirconiated Tungsten Electrodes (White/Alum White) are the go-to choice for AC TIG welding, especially when working with aluminium and magnesium alloys. Identified by their signature white color band, these electrodes combine the best properties of pure tungsten and thoriated tungsten, delivering excellent arc starting, a balanced characteristics, and outstanding resistance to contamination.

Key Features

• Diameter: 4.0mm — ideal for medium-to-heavy-duty welding applications
• Composition: Tungsten alloyed with Zirconium Oxide (ZrO2), typically ~0.7-0.8%
• Color Code: White tip, per AWS A5.12 classification (EWZr)
• No Radioactive Elements: A safer, non-thoriated alternative — ideal for operators concerned about radiation exposure
• Excellent Arc Stability: Maintains a stable, balled tip for clean, consistent arcs on AC current
• High Resistance to Contamination: Performs well even in less-than-ideal cleanliness conditions
• Long Electrode Life: Slower erosion rate compared to pure tungsten electrodes

Best Applications

Zirconiated tungsten electrodes are specifically formulated for AC welding processes and are widely used for:

• Aluminium welding and fabrication
• Magnesium alloy welding
• General-purpose AC TIG welding where a balled electrode tip is required
• Applications requiring a non-radioactive electrode alternative to thoriated tungsten

Why Choose This Electrode?

Unlike pure tungsten, zirconiated tungsten offers better current-carrying capacity and improved arc starting, while avoiding the radioactive concerns associated with thoriated (2% Th) tungsten. The 4.0mm size is well-suited for medium amperage ranges, making it versatile for both workshop and industrial welding tasks.

Specifications Summary