1. The surface of the stainless steel screw adheres to the organic juice (such as melon, vegetable, noodle soup, sputum, etc.), which forms organic acid in the presence of water and oxygen, and the organic acid will corrode the metal surface for a long time.
2. The attachment of dust or foreign metal particles. In the humid air, the attachment and the condensed water of the stainless steel screw connect the two to form a micro battery, which triggers an electrochemical reaction and damages the protective film. It is called electricity. Chemical corrosion.
3. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, and nitrogen oxide), contact with condensed water will form sulfuric acid and acetic acid liquid spots, causing chemical corrosion.
4. The surface of stainless steel adheres to acid, alkali, and salt substances (such as alkali water and lime water splashing on the decoration wall), causing local corrosion.
