Q76Z51 - ESAB Green Pure Tungsten Electrodes 1.6mm (10-Pack)

Technical Overview of ESAB Pure Tungsten Electrodes

The ESAB Pure Tungsten Electrodes (Green) are high-quality, unalloyed tungsten electrodes designed specifically for the Gas Tungsten Arc Welding (GTAW) process. Identified by the industry-standard green color code, these electrodes conform to AWS classification EWP. They contain a minimum of 99.5% tungsten, making them the purest form of electrode available on the market. This high purity level results in a lower current carrying capacity compared to alloyed alternatives but offers distinct advantages in specific metallurgical applications, particularly when welding non-ferrous metals using Alternating Current (AC).

Pure tungsten has the highest work function of all tungsten types, which means it requires more energy to emit electrons. However, when used with AC power sources—especially older transformer-rectifier based machines—pure tungsten excels by providing superior arc stability. The electrode is designed to form a clean, balled end when heated, which is critical for maintaining a stable arc geometry during the AC cycle. This balling characteristic helps to distribute the heat evenly across the tip, preventing the erratic arc wandering that can occur with sharpened pointed electrodes under AC load.

These 1.6mm (1/16") diameter electrodes are 175mm (7") in length, fitting standard TIG torch setups. They are primarily recommended for welding aluminum and magnesium alloys. It is important to note that pure tungsten is generally not recommended for Direct Current (DC) welding, as it does not provide the strong arc starts or the durability at high amperages that thoriated or lanthanated electrodes offer. Furthermore, being non-radioactive, pure tungsten eliminates the health risks associated with grinding radioactive thoriated tungsten, simplifying safety protocols in the workshop.

For industrial MRO procurement, these electrodes represent a reliable, cost-effective consumable for maintenance shops dealing with aluminum repairs. The pack of 10 ensures a sufficient supply for ongoing operations, and the consistent manufacturing quality from ESAB guarantees repeatable performance batch after batch.