The tests, carried out at the individual stages of industrial technological process, showed that the essential problem in obtaining the galvanic coatings of satisfactory quality on the elements made of magnesium alloys lies not only in the correct surface preparation, which is a well known phenomenon, but also in the processes of later copper plating. The acid copper plating process, following the chemical nickel plating, is very aggressive, which consequently leads to occurrence of pits in the base layer, in particular in the element hollows such as holes and threads. As a result of loss of the base layer continuity, the sudden deterioration of corrosion resistance occurs in the salt chamber.