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Abstract

An aluminium alloy strip made of an aluminium alloy, a method for manufacturing the aluminium alloy strip and its preferred use are described. The aluminium alloy strip provides resistance to intercrystalline corrosion, strength and improved forming properties, by the aluminium alloy strip having an aluminium alloy with the following composition in % by weight:

Si≤0.10%,Fe≤0.25%,0.20%≤Mn≤0.30%4.72%≤Mg≤4.95%,Cu≤0.10%,Cr≤0.02%,Ni≤0.01%,Zn≤0.10%,Ti≤0.04%,remainder being Al with unavoidable impurities individually ≤0.05%, in total ≤0.15%. The aluminium alloy strip has an average secondary phase density of less than 250 per 1000 μm2, the total number of secondary phases determined in at least 10 measuring fields in relation to the total measuring surface of all examined measuring fields resulting in the secondary phase density.

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