Which type of thoriated tungsten is the most popular?

The most popular type of thoriated tungsten is 2% thoriated tungsten, primarily due to its excellent performance characteristics. This type of tungsten provides a good balance of arc stability, ease of use, and longevity, making it highly suitable for a variety of application processes, especially in GTAW (Gas Tungsten Arc Welding).

2% thoriated tungsten electrodes offer a higher level of electron emission than pure tungsten, allowing for a more stable arc and improved welder control, particularly in thinner materials or in situations where precision is essential. The thorium additions significantly enhance the electrode's performance, especially at high temperatures, leading to a smoother arc and better overall weld quality.

While other thoriated tungsten types, such as 1% and 3% thoriated electrodes, do exist, they each serve specialized purposes or preferences, but they do not match the overall versatility and favorable characteristics provided by the 2% thoriated tungsten. Pure tungsten, while sometimes utilized for specific applications, generally does not provide the same level of performance in terms of arc stability and longevity as the thoriated variants.