Aluminium alloy, semi-finished product, can, method of producing a slug, method of producing a can, and use of an aluminium alloy

Abstract

An aluminium alloy includes 0.07% by weight to 0.17% by weight of silicon, 0.25% by weight to 0.45% by weight of iron, 0.05% by weight to 0.20% by weight of copper, 0.30% by weight to 0.50% by weight of manganese, 0.05% by weight to 0.25% by weight of magnesium, 0.01% by weight to 0.04% by weight of titanium, and the balance aluminium and, optionally, additional constituents.

1 - 15 . (canceled) 
     
     
         16 . An aluminium alloy consisting of:
 0.07% by weight to 0.17% by weight of silicon,   0.25% by weight to 0.45% by weight of iron,   0.05% by weight to 0.20% by weight of copper,   0.30% by weight to 0.50% by weight of manganese,   0.05% by weight to 0.25% by weight of magnesium,   0.01% by weight to 0.04% by weight of titanium, and   the balance aluminium and, optionally, additional constituents.   
     
     
         17 . The aluminium alloy according to claim  1 , wherein the proportion by weight of silicon is 0.08% by weight to 0.14% by weight. 
     
     
         18 . The aluminium alloy according to  claim 16 , wherein the proportion by weight of iron is 0.30% by weight to 0.40% by weight. 
     
     
         19 . The aluminium alloy according to  claim 16 , wherein the proportion by weight of copper is 0.06% by weight to 0.12% by weight. 
     
     
         20 . The aluminium alloy according to  claim 16 , wherein the proportion by weight of manganese is 0.30% by weight to <0.50% by weight. 
     
     
         21 . The aluminium alloy according to  claim 16 , wherein the proportion by weight of magnesium is 0.06% by weight to 0.16% by weight. 
     
     
         22 . The aluminium alloy according to  claim 16 , wherein the proportion by weight of titanium is 0.015% by weight to 0.03% by weight. 
     
     
         23 . The aluminium alloy according to  claim 16 , wherein the proportion by weight of a single additional constituent is not more than 0.05% by weight and/or the proportion by weight of the additional constituents in total is not more than 0.15% by weight. 
     
     
         24 . The aluminium alloy according to  claim 16 , wherein the additional constituents are impurities. 
     
     
         25 . A semifinished part, slug, or can, comprising the aluminium alloy according to  claim 16 . 
     
     
         26 . A process of producing the slug according to  claim 25 , comprising:
 a) providing aluminium and/or aluminium scrap,   b) melting the aluminium and/or the aluminium scrap,   c) providing the molten aluminium and/or the molten aluminium scrap with alloying elements, where silicon, iron, copper, manganese, magnesium and titanium are used as alloying elements,   d) casting the molten aluminium provided with the alloying elements and/or the molten aluminium scrap provided with the alloying elements to form a strip,   e) hot rolling the strip,   f) cold rolling the hot-rolled strip,   g) producing a raw slug from the cold-rolled strip,   h) heat treating the raw slug,   i) cooling the heat-treated raw slug at a cooling rate of ≥0.01 K/s, and   j) further processing the cooled raw slug to produce the slug.   
     
     
         27 . The process according to  claim 26 , wherein the heat-treated raw slug is cooled at a cooling rate of >50 K/s in step i). 
     
     
         28 . The process according to  claim 26 , wherein step i) is carried out by water cooling the heat-treated raw slug. 
     
     
         29 . A process of producing the can according to  claim 25 , comprising:
 a) providing the slug,   b) forming the slug to give an unfinished can,   c) cutting the unfinished can to length, and   d) further processing the cut-to-length unfinished can to produce the can.