In the aerospace sector, M50 NiL steel is utilized for high-performance bearing steel in aero-engine shafts. M50 denotes a high alloy steel that employs nitriding for secondary strengthening. The heat treatment prior to nitriding aims for a strong core and hardened surface, with nitriding minimally affecting these traits. Surface coating enhances the hardness and corrosion resistance of M50 bearing steel. The nitriding process omits tempering and hardening steps. Liquid nitriding is utilized in this context. The nitriding procedure was conducted over various temperatures and durations for experimental assessment. This study’s primary goal is to evaluate the microstructure, hardness, and corrosion resistance of bearing steel. Research has investigated the corrosion behavior of M50 bearing steel in environments like sodium chloride (NaCl) solutions. The material is initially shaped using electrical discharge machining (EDM) for precise dimensions. Heat treatment is crucial for improving corrosion resistance. Electro potentiodynamic testing evaluates the surface roughness of materials through diverse parameters. Materials are immersed in the solution for three hours. By using potentiostat apparatus, corroded surfaces are characterized, and Tafel plots are drawn; from the results obtained, it is evident that lower temperature samples exhibited better corrosion rate than untreated M50 NiL steel.