BWS0207GE3 - E3 Purple Rare Earth Tungsten Electrode - .020 Inch x 7 Inch

Advanced Rare Earth Technology for Precision TIG Welding

The E3 Purple Tungsten Electrode (.020" diameter) represents a significant advancement in TIG welding consumables, utilizing a sophisticated blend of rare earth oxides to deliver superior performance. Unlike traditional thoriated electrodes which contain radioactive isotopes, E3 electrodes are enriched with a proprietary mix of approximately 1.5% Lanthanum, 0.08% Zirconium, and 0.08% Yttrium oxides. This unique formulation, classified under AWS A5.12 as EWG (Electrode Tungsten General), provides a safe, non-radioactive alternative that does not compromise on welding capability. The presence of these oxides lowers the electron work function, allowing for easier electron emission, which translates to dependable arc starting and a stable arc column even at low amperages.

Designed for the most demanding precision applications, the .020" (0.5mm) diameter is exceptionally fine, making it the ideal choice for micro-TIG welding, thin-gauge electronics, and delicate aerospace components. The E3 composition ensures that the electrode runs cooler than its thoriated counterparts, significantly reducing thermal degradation and tip erosion. This thermal efficiency helps maintain the ground tip geometry for longer durations, ensuring consistent weld bead width and penetration profile. For industrial operations, this means less downtime spent regrinding electrodes and higher overall productivity.

One of the defining characteristics of the E3 Purple Tungsten is its versatility. It performs exceptionally well in both Direct Current (DC) applications—typically used for stainless steel, mild steel, and titanium—and Alternating Current (AC) applications used for aluminum and magnesium. In AC welding, the E3 electrode maintains a clean, balled tip without the splitting often associated with pure tungsten, while in DC welding, it holds a sharp point for deep penetration. This dual-capability makes it a universal solution for job shops and fabrication facilities that handle a diverse range of materials.

By eliminating radioactive thorium, the E3 electrode also simplifies safety compliance and waste disposal protocols within the workshop. Welders can grind and handle these electrodes without the risk of inhaling radioactive dust, promoting a healthier work environment. Whether used in automated orbital welding systems or manual TIG torches, the E3 Purple Tungsten delivers a consistent, high-quality arc that professional fabricators can rely on for critical welds.