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316L stainless steel plate will rust it

316L stainless steel plate will rust it

Many people buy 316L stainless steel, are that it is strong anti-rust, some people will ask the stainless steel plate will rust, the answer is not necessarily. why? What is its corrosion principle?
When the stainless steel surface appears brown spots, people are surprised: stainless steel will not rust, rust is not stainless steel, steel may be a problem.In fact, this is a lack of understanding of stainless steel a one-sided view of the wrong Stainless steel will rust in certain conditions.
Stainless steel has the ability to resist atmospheric oxidation, that is, no rust, but also has acid and alkali salts in the medium corrosion resistance, that is, corrosion resistance, but its corrosion resistance is the size of its steel itself with the chemical Composition, mutual state conditions of use and environmental media type, such as 34, in the dry and clean atmosphere, there is absolutely excellent corrosion resistance, but it moved to the seaside area, with a large number of salt in the sea fog, Will soon rust, and 316 stainless steel is good.Therefore, not any kind of stainless steel, at any time can be resistant to corrosion, no rust.
Stainless steel is a thin layer of very thin and strong, stable, stable chromium-rich oxide film (protective film) formed by its surface. Preventing oxygen atoms from penetrating and continuing to oxidize and gain resistance to corrosion. Once for some reason, this film By the constant destruction of air or liquid oxygen atoms will continue to precipitate out to form loose iron oxide, metal surface will be subject to constant corrosion.

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