Corrosion Conditions Of Stainless Steel Plates

1. The surface of stainless steel contains dust or alien metal particles containing other metal elements, in the humid air, the condensate between the attachment and stainless steel, the two are connected into a microbattery, causing an electrochemical reaction, the protective film is damaged, called electrochemical corrosion.
2. The surface of stainless steel adheres to organic juice (such as melons and vegetables, noodle soup, sputum, etc.), which constitutes organic acid in the case of water oxygen, and the organic acid corrods the metal surface for a long time.
3. Stainless steel surface adhesion containing acid, alkali, salt substances (such as alkaline water, lime water splash on the decoration wall), causing local corrosion.
4. In polluted air (such as the atmosphere containing a large number of sulfides, carbon oxide, nitrogen oxide), in the case of condensate, the formation of sulfuric acid, nitric acid, acetic acid liquid points, causing chemical corrosion can cause the damage of stainless steel surface protective film corrosion.
Corrosion resistance
The corrosion resistance of stainless steel plate mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, manganese, etc.) and the internal organizational structure, which plays the main role of chromium. Chromium has high chemical stability, can form a passivation film on the surface of the 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.