What is the composition of the EWTh-1 tungsten electrode?

The composition of the EWTh-1 tungsten electrode consists of 1% thoria (thorium oxide) added to tungsten. This specific formulation enhances the electrode’s performance, as thoria acts as a doping agent that improves the electron emission properties and increases the electrode's arc stability. The addition of thorium improves the electrode's resistance to melting and erosion, making it particularly well-suited for applications requiring heat and high current.

The characteristics of the EWTh-1 electrode make it ideal for a variety of welding applications, particularly in situations where there’s a need for good arc control and stability at high temperatures. The thorium content allows for efficient operation, making it a favored choice among welders using tungsten arc welding processes.