Stainless steel is a metal known some times as Inox; it's commonly known with the minimum 10.5 to 11% of Chromium added alloys considering the resulting total mass. Stainless steel came from the non staining feature and rust or corrosion resistance, but regardless of all that, it is not stain - proof. CRES is one of its commercial names. The kind or the grade of alloy is greatly analyzed, especially when it comes to the type used in the air craft industry. Many various grades and buildings have a finishing of stainless steel to be convenient with the environmental ups and downs, as this type of coating is meant to be there for an extremely long time, and justifies the stainless use where we need corrosion resistance or Anti rust properties.
Stainless steel is totally different from any carbon steel type, the difference is caused by the chromium quantities applied into the alloy as carbon stainless alloys rust when there is an exposure to air or moisture. One of the facts about the rust is its fast speed in penetrating the affected surface. Stainless steel also holds a pretty satisfying amount of chromium to establish a guarding film of the Chromium oxide. The definitely prohibits any further corrosion and stands against the wide spread into the inside structure of the surface.
A small number of Corrosion Resistance iron antiques were saved from the danger of corrosion. A well known example of that is Pillar of Delhi, but in this case it's not regarding the chromium, but it's more related to the Phosphorus ingredient applied when first making the alloy meant to form the desired structure