An electric cable (10) is disclosed comprising a) at least one cable core (11) comprising at least one power transmissive insulated element (12); and b) a metallic outer armor (19) containing the cable core (11); wherein the outer armor (19) comprises a carbon steel tape (20) wound according to helical interlocked windings, the tape (20) being coated with an aluminum coating layer (22) having a thickness equal to or lower than 50 μm. Furthermore, a process for manufacturing such an electric cable is disclosed.