Carbon steel is widely used in the manufacture of equipment and piping to meet the needs of the production and transportation of fossil fuels. It is well known that carbon steel in contact with the CO2 environment will corrode leading to the loss of quality in the process and consequently impacts in production and repair costs, among others. Non-metallic coatings can be used as a method of preventing corrosion, ensuring the quality of the final product and reducing production costs. The objective of this work was the evaluation of a nano coated AISI 1020 steel in a CO2 environment. Corrosion tests were performed in a brine solution of 3 per cent wt NaCl saturated with CO2, at a pressure of 75 bar and temperatures of 50 Celsius degrees and 100 Celsius degrees for 15 and 30 days. The corrosion rate behavior was evaluated through electrochemical techniques, such as, Linear Polarization Resistance (LPR), Electrochemical Impedance (EIS) and Tafel Curves and mass variation. Corrosion products were analyzed using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Energy Dispersive Spectroscopy (EDS). For the conditions tested the coating with nanotubes and polymeric matrix withstand the maximum of 15 days at 50 Celsius degrees, although a corrosion layer was observed. No effective coating protection was observed for the other conditions studied, indicating that this type of coating can not be used for temperatures above 50 Celsius degrees.