Aggressiveness of a 20% bioethanol-80% gasoline mixture on autoparts: I behavior of metallic materials and evaluation of their electrochemical properties

► Carbon steel and copper exposed to E20 exhibited susceptibility to corrosion. ► Ethanolamine in the E20 mixture as a corrosion inhibitor for carbon steel was effective. ► EIS technique is useful to assess the corrosion susceptibility of metals immersed in ethanol blend fuels. ► Severe hydrodynamic conditions improve corrosion resistance of copper and tin.