Sheet product having an outer surface optimized for anodization
The exemplary embodiments relate to an aluminum architectural sheet product in which a clad layer is applied to at least one side of a core layer. Preferably, the core layer is made of an alloy selected from the AA5XXX series alloys with a magnesium content greater than 3 weight %, and the clad layer (or each clad layer) is made of an alloy selected from alloys AA5005, AA5205, AA5052, AA5252 and AA5005A. The product may be provided with an anodic film on one or both faces and the film(s) may be covered with one or more layers, e.g. of paint.
1 . An aluminum architectural sheet product comprising a composite structure having a core layer and at least one clad layer, wherein the core layer is an alloy selected from the group AA5XXX series alloys with a magnesium content greater than 3 weight %, and the at least one clad layer is selected from the group of alloys consisting of AA5005, AA5205, AA5052, AA5252 and AA5005A.
2 . The product of claim 1 , wherein the composite structure comprises two clad layers with one clad layer on each side of the core layer.
3 . The product of claim 2 , wherein the two clad layers are of the same composition.
4 . The product of claim 1 , wherein the core layer comprises an alloy selected from the group consisting of AA5154, AA5254, AA5654, AA5754, AA5056, AA5456, AA5556, AA5082, AA5182, AA5083, AA5383, AA5086 and AA5186.
5 . The product of claim 1 , wherein the core layer is AA5083.
6 . The product of claim 1 , wherein the at least one clad layer is AA5005.
7 . An anodized sheet article comprising the product of claim 1 provided with an anodic film at an outer surface of said at least one clad layer.