1. The attachment of dust or dissimilar metal particles, in the humid air, the attachment and the condensed water of the stainless steel screw connect the two into a micro-battery, which triggers an electrochemical reaction and damages the protective film, which is called electricity. chemical corrosion.
2. Organic juices (such as vegetables, noodle soup, sputum, etc.) adhere to the surface of stainless steel screws. In the presence of water and oxygen, organic acids are formed, and organic acids will corrode the metal surface for a long time.
3. The surface of stainless steel adheres to substances containing acids, alkalis and salts (such as alkali water and lime water splashing from the decoration walls), causing local corrosion.
4. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, nitrogen oxide), when encountering condensed water, it will form liquid spots of sulfuric acid, nitric acid and acetic acid, causing chemical corrosion.
