This article aims at investigating the influence of partial and total replacement of Ni by N in the chemical composition of the exhausted valve steel grade X45CrNiW18-9 on its corrosion behavior. Five experiments were designed. Melting was carried out in an induction furnace with a capacity of 10 Kg under nitrogen pressure. The chemical compositions of produced stainless steels were determined. The produced stainless-steel grades were forged by using free forging. The nitrogen content of each steel grade was determined. Samples of forged stainless-steel grades were subjected to heat treatment at 1050 °C for one hour and then water quenched. Microstructures of heat-treated stainless-steel grades were investigated. The influence of substituting Ni by N on the corrosion behavior of five grades of steel was studied using different concentrations of NaCl-FeCl₃ solutions. SEM was used to examine the morphology of the corroded surfaces after the potentiodynamic polarization experiments.