Aluminium coatings are surface coatings of metals which display excellent corrosion resistance. The process of producing this coating is called aluminizing, a thermo-chemical process that diffuses aluminium into the surface of metals. The most common material subjected to aluminizing is steel. Aluminium coatings can be applied to a wide range of areas. The most common are found in applications that have to withstand high heat, humidity and chemical attacks. Therefore, aluminium coatings can be found in boiler parts, chimneys, ducts, plants, and tubes and pipes. Generally, aluminizing is applied when decent corrosion resistance is needed.