T0207GT2 - CK Worldwide 2% Thoriated Tungsten Electrodes - Red - 0.020" Diameter

Precision 2% Thoriated Tungsten for DC Applications

The CK Worldwide T0207G72 is a premium-grade 2% Thoriated Tungsten electrode, identified by the industry-standard red color code. This specific electrode features an extremely fine diameter of 0.020 inches (approximately 0.5mm), making it an essential consumable for specialized micro-TIG welding applications. Thoriated tungsten (AWS classification EWTh-2) remains one of the most widely used tungsten types in the industrial sector due to its superior metallurgical properties. The addition of approximately 2% Thorium Oxide (ThO2) to the tungsten matrix significantly lowers the electron work function of the material. This physical alteration allows the electrode to emit electrons more easily at lower temperatures compared to pure tungsten, resulting in reliable arc ignition and improved arc stability.

Designed primarily for Direct Current Electrode Negative (DCEN) welding, this electrode excels in joining carbon steels, stainless steels, nickel alloys, and titanium. The thoriated composition provides a higher melting point and greater resistance to contamination, which is critical when working with the delicate amperages required by a 0.020-inch electrode. While thoriated tungsten is radioactive (containing low-level alpha emitters), its performance characteristics in terms of longevity and current carrying capacity are often considered superior to non-radioactive alternatives in specific DC applications. Users must follow proper safety protocols during grinding to manage dust exposure.

The 7-inch length is compatible with standard TIG torch setups, though the 0.020-inch diameter will require matching collets and collet bodies designed for this specific gauge. This product is the professional's choice for applications requiring high-precision welds on thin-gauge materials, such as electronics manufacturing, medical device fabrication, and aerospace component repair. The electrode maintains a sharpened point for extended periods, reducing downtime for regrinding and ensuring consistent weld bead profiles.