Thin strips made of alumunium-iron alloy

Abstract

Aluminum alloy strips which are 30-150 mμ thick, having a composition (in wt. %): Si<0.4; Fe: 1.5-1.9; Mn: 0.04-0.15; other elements: <0.05 each and 0.15 in total, remainder aluminum. The strips are used, in particular, for the manufacture of trays and dishes for the distribution of foodstuffs and fast food.

1 . Aluminum alloy strip with a thickness between 30 and 150 μm, made of an alloy consisting essentially of, in % by weight: 
 Si: <0.4; Fe: 1.5-1.9; Mn: 0.04-0.15; other elements: <0.05 each and 0.15 total, remainder aluminum.    
     
     
         2 . Process for producing strips according to  claim 1 , comprising continuous casting between rolls of a strip with a thickness between 2 and 10 mm, with the possible homogenization of this strip at a temperature setting between 420 and 550° C., cold rolling of this strip until it the final thickness is achieved, and possibly an intermediate annealing for 1 to 4 hours at a temperature setting between 300 and 350° C., and a final annealing at a temperature setting between 200 and 430° C. for a period of at least 30 hours.  
     
     
         3 . Process according to  claim 2 , characterized in that the final annealing is carried out at 2 temperature settings, the first between 200 and 300° C. and the second between 300 and 430° C.  
     
     
         4 . (canceled)  
     
     
         5 . Plate or tray for foodstuffs, comprising an aluminum alloy strip according to  claim 1.