Aluminum foil (or aluminum foil), often referred to with the misnomer tin foil, is aluminum prepared in thin metal leaves with a thickness less than 0.2 mm (7.9 mils); thinner gauges down to 6 micrometers (0.24 mils) are also commonly used. In the United States, foils are commonly gauged in thousandths of an inch or mils. Standard household foil is typically 0.016 mm (0.63 mils) thick, and heavy duty household foil is typically 0.024 mm (0.94 mils). The foil is pliable, and can be readily bent or wrapped around objects. Thin foils are fragile and are sometimes laminated to other materials such as plastics or paper to make them more useful. Aluminum foil supplanted tin foil in the mid-20th century. Aluminum foil tapes is designed to cover all key application areas where high temperature resistance and electrical or thermal conductivity are required. Applications include insulation and duct sealing in the heating, ventilation and air conditioning market and electromagnetic protection in the electronic industry. Aluminum foil tape has all the qualities of aluminum but also has an adhesive that is aggressive and long lasting. It is aesthetically pleasing due to the shiny surface and is used for thermal conductivity, moisture and chemical resistance, heat and light reflectance, flame resistance and weather resistance. Electrical – Because foil tape is polymer coated, it is used to coat electrical cables. Its resistance to weather shields communication cables from the environment. Aluminum glass tape can be used to wrap insulation cables, instruments and other temperature sensitive electrical materials. Aluminum foil backed tape with a paper liner designed for maximum adhesion over clean, dry surfaces. It features a high tack, pressure sensitive, rubber adhesive which is ideally suited for difficult to adhere to surfaces such as low energy substrates.