Holidays and Traditions What is 1100 aluminum used for? What is 1100 aluminum used for? Applications. Aluminium / Aluminum 1100 alloy is widely used in fin stock, heat exchanger fins, spun hollowware, dials and name plates, decorative parts, giftware, cooking utensils, rivets and reflectors, and in sheet metal work.Sep 21, 2012 How strong is 1100 aluminum? Alloy / Temper Tensile Strength Yield Strength -------------- ---------------- -------------- 1100-H18 24,000 psi 22,000 psi