Causes of rust on stainless steel hexagonal rods

Stainless steel hexagonal rods are long, solid stainless steel materials with a hexagonal cross-section. Due to the characteristics of stainless steel hexagonal rods, they are widely used in marine, chemical industry, construction, etc.

1. When the stainless steel hexagonal rod is in humid air, rare metal particles adhere to the condensed water on the surface of the stainless steel hexagonal rod. The two form a micro-electric zone, triggering an electric chemical reaction, and the protective film is damaged and rusts, which is electrochemical corrosion and rust.

2. Organic juice (such as vegetables, noodle soup, juice, etc.) adheres to the surface of the stainless steel hexagonal rod. Under the action of water and oxygen, organic acid is formed. For a long time, the organic acid corrodes the metal surface and causes rust.

3. The surface of stainless steel hexagonal rods contains acid, alkali, and salt substances (such as alkali, water lime, and glue splash from decorating walls), causing local corrosion and rust.

4. In polluted air (such as an atmosphere containing a large amount of sulfides, carbon oxides, and nitrogen oxides), when encountering condensed water, liquid sulfuric acid, nitric acid, and acetic acid adhere to the surface, causing chemical corrosion and rust.