304 2B stainless steel sheetMicrostructure and surface passivation of stainless steel due to its special film, making it generally more difficult and in the media was corrosion for chemical reactions, but not in any condition are not corroded. In corrosion medium and incentives ( such as scratches, splash, cutting slag ) under the existing conditions, stainless steel with corrosion medium chemical corrosion and electrochemical reaction is slow, and under certain conditions the corrosion rate is quite fast and produces corrosion phenomena, particularly pitting and crevice corrosion. Corrosive mechanism mainly for electrochemical corrosion of stainless steel parts.