What is a common application for 2% thoriated tungsten?

2% thoriated tungsten electrodes are widely used in the welding of stainless steel due to their excellent performance characteristics, particularly in gas tungsten arc welding (GTAW) processes. The thorium content aids in stabilizing the arc and provides improved electron emission at lower temperatures, which enhances arc stability and increases the tungsten's longevity. This quality is especially beneficial when working with stainless steel, as it often requires a precise and consistent heat input to achieve a strong, clean weld while minimizing the risk of warping or damage to the material.

The unique properties of 2% thoriated tungsten make it less suitable for applications like welding plastics, aluminum, or carbon fiber. For instance, welding aluminum generally requires a different type of electrode, such as pure tungsten or a zirconium tungsten, to prevent contamination and ensure an effective weld. Meanwhile, welding processes for plastics and carbon fiber involve different techniques and materials altogether, which do not pertain to the applications of thoriated tungsten.