This part of EN 573 specifies the chemical composition limits of wrought aluminium and aluminum alloys. The aluminium or aluminium alloy chemical composition limits specified therein are strickly identical to those registered to the Aluminum Association, Washington DC 20006, USA, for the corresponding alloys. NOTE: Some of the registered alloys may be the subject of patent or patent applications, and their listing herein is not to be construed in any way as the granting of a license under such patent right. This standard applies to wrought products and to ingots intended to be wrought.