Aluminium foil (or Aluminium foil), often referred to with the misnomer tin foil, is aluminium prepared in thin metal leaves with a thickness less than 0.2 mm (7.9 mils); thinner gauges down to 6 micrometres (0.24 mils) are also commonly used.
A 4748 (OTTO) Aluminium foil, 6.5 µm thick, 99%+ Cas 7429-90-5 - used for radiation shield (barrier and reflectivity), heat exchangers (heat conduction) and cable liners (barrier and electrical conductivity).