Due to the traffic of goods that move in the Mariel Special Development Zone (ZED Mariel), mainly chemicals and fuels. The use of road defenses is essential to prevent the occurrence of accidents and the impact of vehicles against warehouses or industries, it is necessary that they have high resistance to the climatic conditions typical of the tropical climate and the high corrosivity that characterizes the area, since in the ZED Mariel, there are a large number of industries, which generates the concentration of polluting gases in the atmosphere. For this reason, the objective of this work is to evaluate the behavior of the Magnelis® metallic coating in highly corrosive conditions, to evaluate its resistance against these climatic conditions. For this study, an evaluation of the corrosion rate and increase in surface roughness of the Magnelis® 35 μm coating compared to the Galvanized 85 μm pattern is carried out, in a category (C5) high corrosiveness environment. For this purpose, both test pieces are subjected to tests in a climatic humidity and temperature chamber with total condensation in constant atmosphere and a neutral salt fog chamber.