What is general corrosion? Corrosion
General corrosion is the most common form of corrosion, also known as uniform corrosion, where corrosion occurs across most of the surface area of a metal. It will most commonly be seen on non-corrosion resistant metals such as carbon steels, which will form the instantly-recognised bright red iron oxide rust layer throughout.
Due to the increased corrosion resistance of stainless steels, nickel and copper alloys, you are highly unlikely to witness general corrosion. More likely will be localised corrosion in selected areas, where conditions are particularly aggressive or there are defects or damage to the protective passive film layer.