WELDABLE METAL ARTICLE

摘要

The invention relates to an extruded or rolled clad metal article having a core metal layer and a cladding metal layer on at least one surface of the core layer, wherein said metals of said core metal layer and said cladding metal layer are each aluminium alloys, preferably an aluminium-magnesium alloy, having at least Sc in a range of 0.05 % to 1 %, and wherein the Sc-content in the core metal layer is lower than in said cladding metal layer. The invention further relates to a welded structure incorporating such a metal article.