This study aims to investigate the influence of groove angle on the welding process, pitting corrosion resistance, mechanical properties, and metallurgical characteristics of Gas Tungsten Arc Welded (GTAW) joints in 6mm thick AISI 304 stainless steel (SS) plates. Three different groove angles are employed in the welding process, and the resulting joints are subjected to comprehensive analysis. The research reveals significant findings regarding pitting corrosion resistance, impact toughness, ultimate tensile strength (UTS), heat dissipation characteristics, and hardness of the welded joints. Notably, joints with smaller groove angles exhibit superior pitting corrosion resistance, higher UTS, impact toughness, and hardness. Additionally, variations in groove angle lead to differences in heat dissipation characteristics across the joints. Based on these findings, recommendations are made to prioritize smaller groove angles for achieving better pitting resistance and mechanical properties in GTAW welded joints of AISI 304 SS. This study contributes valuable insights into optimizing welding processes and enhancing the performance of welded joints in stainless steel applications.