Foil is usually made of Aluminum and maybe sometimes some form of steel. Metals like Magnesium or Tungsten wouldn't be used in foil.
For foil to be made of foil, you would have had to have already made foil.Foil is made of very thinly cut bits of aluminium (the metal).
Aluminum foil is a type of metal. Steel, iron, copper, aluminum.. all of those are metals.
It's commonly called "tin foil" (originally it was made of tin) but it is actually aluminium foil, rolled to a thickness of (typically) less than 0.02 mm.
Aluminum foil is made of the metal aluminum, pressed into a long, thin sheet.
fin metal foil
Thin metal foil
LOL Really
They are made out of an thin metal foil
This foil is also a metal.
Aluminium foil is made up of aluminum which is silvery white metal and less than 0.2 mm thick. This is fragile and easily damaged and laminated to other materials such as paper and plastic to make them useful.
It's a thin sheet or foil made of metal. Which metal precisely is an open question. At one time it actually was made of tin; now aluminium is much more likely.
"Foil" can be any thin flexible sheets of metal- but the foil you use in the kitchen is made of aluminum. Carbon, being a nonmetal and generally rather brittle, would not make a good foil.