T0407GZ - 0.040" Zirconiated White Tungsten Electrodes (10-Pack)

High-Performance Zirconiated Tungsten for AC Applications

The T0407ZIR is a premium quality Zirconiated Tungsten electrode, readily identified by its white color code. Measuring 0.040 inches in diameter and 7 inches in length, this electrode is manufactured to meet AWS classification EWZr-1 standards. It contains a specific balance of tungsten and zirconium oxide, engineered to deliver superior performance in Alternating Current (AC) TIG welding scenarios. This composition allows the electrode to retain a balled end during welding, which is essential for maintaining arc stability and achieving high-quality radiographic welds on non-ferrous metals.

Zirconiated tungsten is widely regarded as the optimal choice for welding aluminum and magnesium alloys. Unlike Pure Tungsten (Green), Zirconiated electrodes exhibit significantly higher resistance to tungsten spitting and contamination of the weld pool. They are capable of handling higher amperage loads for a given diameter, ensuring durability and consistency during extended welding sessions. While they share some characteristics with pure tungsten, the addition of zirconium oxide greatly enhances arc start performance and overall stability. It is important to note that these electrodes are designed strictly for AC welding and are not recommended for DC applications.

For industrial MRO operations requiring precision on thin-gauge aluminum, the .040" diameter provides the necessary control for delicate work. The electrodes come in a standard 7-inch length, compatible with all standard TIG torch collets and collet bodies designed for this diameter.