Two specific examples are presented to describe the experience gained in the use of mechanical tests for the study of stress corrosion cracking and corrosion-fatigue: 1) the design of tension test platforms and low-frequency fatigue machines, having cross-head displacement rates of the order of 1 μm/h; 2) the use of curved tension test pieces to take into account heterogeneities of the material microstructure, in the case of cracking phenomena in burried pipelines.