Common uses of 1100 aluminum sheets include roofing and siding panels, automotive parts, fuel tanks, aircraft components, packaging solutions such as foil and containers, heat exchangers, street signs, building materials such as gutters and flashers, window moldings and trimming, flashing on residential homes and low-temperature equipment. These are just a few of the many uses of 1100 aluminum sheets in various industries. For example, they are currently being used in the production of hydrogen fuel cells due to their lightweight nature.