Corrosion Conditions Of Stainless Steel Plates

1. The surface of stainless steel contains dust or heterogeneous metal particles containing other metal elements, in humid air, condensation between the adhesion and stainless steel, connecting the two into a microbattery, triggering an electrochemical reaction, the protective film is damaged, called electrochemical corrosion.
2. The surface of stainless steel adheres to organic juice (such as melon vegetables, noodle soup, phlegm, etc.), which constitutes organic acids in the presence of water and oxygen, and corrodes the metal surface by organic acids for a long time.
3. The surface of stainless steel adheres to substances containing acids, alkalis and salts (such as alkaline water and lime water splashes on decoration walls), causing local corrosion.
4. In polluted air (such as an atmosphere containing a large amount of sulfide, carbon oxide and nitrogen oxide), in case of condensation, sulfuric acid, nitric acid, acetic acid liquid point is formed, causing chemical corrosion, the above conditions can cause the destruction of the stainless steel surface protective film and cause rust.

Corrosion resistant
The corrosion resistance of stainless steel plate mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, manganese, etc.) and internal structure, and the main role is chromium. Chromium has high chemical stability, can form a passivation film on the surface of steel, isolate the metal from the outside world, protect the steel plate from oxidation, and increase the corrosion resistance of the steel plate. After the passivation film is destroyed, the corrosion resistance decreases.