What does the "Ce" in AWS electrode classification EWCe-2 indicate?

The "Ce" in the AWS electrode classification EWCe-2 signifies the presence of cerium content in the tungsten electrode. In this classification system, the letters refer to the alloying elements added to the tungsten to enhance its performance during welding processes. Cerium, as an alloying element, improves the arc stability and reduces the ignition voltage, which can be beneficial for TIG (Tungsten Inert Gas) welding applications.

Using cerium in tungsten electrodes helps provide a more efficient and controlled arc, making it particularly advantageous for welding applications that require precision. The number following the "Ce" indicates the percentage of cerium in the electrode, thereby giving welders important information about the electrode's composition and its intended use in various welding scenarios.