In this work, the corrosive behavior of commercial galvanized steel samples with and without defects on their surface is evaluated in aqueous media to simulate the marine environment with the presence of chlorides and sulfates, a common environment for steel parts for industrial purposes. Galvanized steel samples were exposed in two electrolytes (3% sodium chloride and 0.1 M sodium sulfate) in a period of 40 days. Then the samples were subjected to electrochemical tests (Polarization Resistance, Electrochemical Impedance Spectroscopy, and Potentiodynamic Polarization Curves) to predict the behavior in terms of their deterioration or destruction of the material. It was found that the defective and non-defective samples immersed in the sodium chloride electrolyte presented greater deterioration due to corrosion since the substance causes greater destructive effects in metallic materials compared to sodium sulfate.