The disclosure relates to a blank-shaped or strip-shaped semi-finished product comprising at least one first metal layer and at least one plastics layer, which are joined over their full area to one another to form a metal/plastic composite. The material thickness of the metal layer is not more than 1.5 mm. The material thickness of the plastics layer is at least 0.2 mm. A method for producing said product is also provided. One object of the present invention, of providing a semi-finished product which is significantly lighter than the semi-finished products used in the prior art, is achieved for a semi-finished product.