Why the stainless steel pitting phenomenon, what factors? - - - - - - Precision stainless steel - Spring stainless steel belt | | 301 super stainless steel spring

Pitting the concept of well-known stainless steel has excellent corrosion resistance because the surface has a layer of invisible oxide film, to assume the passive state, if the oxide film was damaged, stainless steel will continue to be corrosion. In many cases, the passive film on the surface of the metal, only local places are destroyed, the role of the corrosion is a small hole or pit, in the distribution of the material surface produce irregular small pit corrosion, this is the phenomenon of the pitting corrosion of stainless steel tags: pitting corrosion of stainless steel precision