In this work, a Multiphysics model based on the Finite Element Method (FEM), was used to study the effect of different electrical parameters as well as chemical composition of the treatment medium on the metal release from the stainless steel (type AISI 316L) electrodes of a PEF chamber. A total of 15 processing conditions obtained by coupling different field strength (12–31 kV/cm) and total specific energy input (20–100 kJ/kg) were simulated with two model liquid food solutions with the same pH (7) and electrical conductivity (2 mS/cm at 25 °C) but different halides concentration.