This type of treatment can be used for both a decorative or functional purpose. It is characterized by a bright grey colour, similar to stainless steel, and in some cases is in fact used as a final treatment on iron when stainless steel is too expensive.
It can be cleaned with a soft cloth, damp or lightly soaked in alcohol, and gone over again with a dry cloth. It finds applications as a protection for copper or brass elements which are used in the internal circuits of refrigerators, or in equipment destined for use in the food sector or in computers.
In the furniture and health sectors, once the treatment has been applied, one can proceed with a brushing of the treatment to obtain a satin finish effect.