What is the advantage of using DCEN in TIG welding for stainless steel?

Using Direct Current Electrode Negative (DCEN) in TIG welding for stainless steel indeed produces deeper penetration, which is one of the primary benefits of this welding polarity. In DCEN, the electrode carries the negative charge, allowing a greater portion of the heat to be concentrated on the workpiece rather than the electrode. This results in a more focused and intense heat that enables deeper fusion into the base material, helping to achieve stronger welds with enhanced mechanical properties.

This advantage is especially important in applications where the structural integrity of the weld is critical, such as in piping systems or pressure vessels. The ability to penetrate deeper allows for better joint integrity, reducing the likelihood of defects such as undercutting or lack of fusion.

While the other options also describe potential benefits related to TIG welding, they do not specifically address the primary effect of using DCEN with stainless steel. Therefore, the depth of penetration is a key factor that aligns well with the enhanced performance and quality of welds in this context.