Galvanization is a process, in which metals like iron, steel, or aluminum, are coated with zinc. To be more precise, the metal (to be galvanized) is passed through molten zinc, at a temperature of 840 to 860°F, so that it reacts with zinc, and forms a coating of zinc carbonate on the surfaces. The inner layers contain both zinc and the metal, and the innermost layer is pure metal. Through galvanization, the metal is made free of rust and corrosion.