Stainless steel screw refers to the screw shape made of stainless steel screw wire pier, and then rub the thread well. It is made of stainless steel. Stainless steel screws are divided into stainless steel SUS201 screws, stainless steel SUS304 screws, stainless steel SUS316 screws and so on.

1, the surface of stainless steel screws adhere to organic juice (such as melons and vegetables, noodle soup, sputum, etc.), in the case of water oxygen, constitute organic acids, long-term corrosion of organic acids on the metal surface.

2, the adhesion of dust or exotic metal particles, in the humid air, the adhesion and the condensate of stainless steel screws, the two are connected into a microbattery, causing an electrochemical reaction, and the protective film is damaged, which is called electrochemical corrosion.

3, in the polluted air (such as containing a large number of sulfide, carbon oxide, nitrogen oxide atmosphere), in the case of condensate, the formation of sulfuric acid, acetic acid liquid point, causing chemical corrosion.

4, stainless steel surface adhesion containing acid, alkali, salt substances (such as the decoration of the wall of soda, lime water splash), causing local corrosion.