Amine units are generally used in refineries and petrochemical plants to remove acid gases such as hydrogen sulfide (H2S) and carbon dioxide (C02) from process streams. Commonly, corrosion of carbon steels in amine units is not caused by the amine itself but by its reaction with dissolved gases. In this paper, fundamental aspects concerning the susceptibility of carbon steels to stress corrosion cracking in amine solutions are presented, and special attention is given to a recent study on a commercial mixture of amines. An overview is made on the methodology used.