Stainless steel plate rust problem

Many people think that "stainless steel does not rust. If it rusts, it is no longer stainless steel. There may be a problem with the steel." In fact, this is a one-sided wrong view due to lack of understanding of stainless steel plates.

First, let’s analyze the reasons why stainless steel plates rust. Stainless steel has the ability to resist atmospheric oxidation-that is, it is rustless, and also has the ability to resist corrosion in media containing acids, alkalis, and salts-that is, corrosion resistance. However, its corrosion resistance changes with the chemical composition of the steel itself, its mutual state, usage conditions and environmental medium types. For example, 304 stainless steel plates have absolutely excellent corrosion resistance in a dry and clean atmosphere. However, if they are moved to coastal areas, they will soon get rusty in the sea fog containing a large amount of salt. While 316 stainless steel plates It performs well. Therefore, not any kind of stainless steel can resist corrosion and rust in any environment.

Stainless steel plates rely on an extremely thin, strong, fine, and stable passivation film formed on their surfaces to prevent oxygen atoms from continuing to penetrate and oxidize, thereby gaining the ability to resist rust. Once this film is continuously damaged for some reason, oxygen atoms in the air or liquid will continue to penetrate or iron atoms in the metal will continue to separate out, forming loose iron oxide, and the metal surface will be continuously corroded. causing rust

So what should we do if the stainless steel is rusted: If the area is not large and the corrosion is not serious, you can try it with five-step cleaning powder. It works well. If there is slight rust and you are afraid of friction, you can wipe it with a soft cloth dipped in toothpaste, which can also have a polishing effect.

Here, I would like to remind potential customers that when purchasing stainless steel plates, they must choose regular, qualified, and large-scale stainless steel plate manufacturers. Do not be greedy for cheap and lose the big for the small. In addition to being careful when buying again, how to maintain and maintain the stainless steel plate after buying it to prevent the stainless steel plate from rusting is also critical.