a composite component comprising at least one first and one second sheet metal plate with at least one layer of a polymer arranged between the first and the second sheet metal plates provides for a component optimized with respect to the weight thereof , and which is at the same time simple to manufacture . the polymer layer of the composite component according to the invention comprises at least one foamed polymer layer of a thermoplastic polymer , wherein the foamed polymer layer comprises gas bubbles with a volume percentage of 1 % to 80 %, in particular 5 % to 70 %.