Tin foil, also spelled tinfoil, is a thin foil made of tin. Tin foil was superseded after World War II by cheaper and more durable[1]aluminium foil, which is still referred to as "tin foil" in many regions (an example of a misnomer).
^A.M. Howatson, P.G. Lund, and J.D. Todd, Engineering Tables and Data, p. 41