Corrosion factors of stainless steel plates

1 Electrochemical corrosion   

The scratches caused by the contact of the stainless steel sheet with the carbon steel parts, and then form a galvanic cell with the corrosive medium, which will cause electrochemical corrosion. If the pickling passivation effect is not good, the passivation film on the surface of the plate will be uneven or too thin, which will easily cause electrochemical corrosion, cutting slag, splash and other rusty substances to adhere to the plate, and then form with corrosive media. Primary battery, which produces electrochemical corrosion. Unclean pickling passivation cleaning results in chemical corrosion products between the remaining pickling passivation residue and the plate, and then electrochemical corrosion with the plate.

2 Chemical corrosion    

Under certain conditions, a lot of oil, dust, acid, alkali, salt, etc. adhering to the surface of the stainless steel sheet will be converted into corrosive media and chemically react with some components in the sheet, resulting in chemical corrosion and rust. The cleaning and pickling passivation is not clean enough to cause residual liquid to remain, which directly corrodes the plate. The surface of the plate is scratched, which leads to the destruction of the passivation film, so that the protective ability of the plate is reduced, and it is easy to react with the chemical medium, resulting in chemical corrosion and rust.


HCADTO Stainless Steel Co., Ltd. the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round bar, square bar, hexagonal bar and channel bar in various grades and sizes. Our years of production experience and manufacturing facilities will ensure the good quality and competitive duration of our products.