Metal Glossary AluminiumCopperStainless Steel ABCDEFGHIJKLMNOPQRSTUVWXYZ Kitchen Foil, Cooking Foil, Foil, Tin FoilCold rolled aluminium flat product less than 250 microns in thickness. Usage includes kitchen foil (cooking foil) and foil trays for food. Kitchen Foil is often incorrectly referred to as Tin Foil.