a composite structural article , of preferably metal and thermoplastic material is described . the composite structural article comprises : at least one reinforcing element having sized openings ; and at least three profiled sections . a portion of each profiled section is connected interlockingly with a portion of the reinforcing element . at least two of the profiled sections have terminal portions each having a projecting region that engages interlockingly with the sized openings of the reinforcing element , such that a portion of the reinforcing element surrounds at least partially the projecting regions . the profiled sections are further joined to the reinforcing element by means of thermoplastic material injected in the region of each interlocking connection with the reinforcing element . in addition , one of the profiled sections is in at least one of : an abutting relationship with at least two of the profiled sections ; and an interlocking relationship with at least two of said profiled sections . articles that may comprise the composite structural article of the present invention include , for example , motorized vehicles , electronics articles and domestic appliances .