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Rust Causes of 316l Stainless Steel Plate

Mar. 23, 2019

When brown spots appear on the surface of 316l Stainless Steel Plate, people are surprised: "Stainless steel will not rust, rust is not stainless steel, it may be a problem with steel." In fact, this is a one-sided lack of understanding of stainless steel. Wrong view. Stainless steel will also rust under certain conditions.

Stainless steel has the ability to resist atmospheric oxidation, that is, it does not rust, and also has the ability to resist corrosion in a medium containing acid and alkali salts, that is, corrosion resistance. However, its corrosion resistance is related to the chemistry of its steel itself. Composition, mutual use conditions and environmental media types. For example, 304, in the dry and clean atmosphere, has absolutely excellent corrosion resistance, but it is moved to the seaside area, in the sea fog with a lot of salt, It will soon rust, and 316l Stainless Steel Coil will perform well. Therefore, it is not any kind of stainless steel, it can resist corrosion and rust at any time.

Stainless steel is a very thin and strong and stable chromium-rich oxide film (protective film) formed on the surface. It prevents oxygen atoms from continuing to infiltrate and continues to oxidize, and obtains anti-corrosion ability. Once for some reason, the film Under constant damage, the oxygen atoms in the air or liquid will be continuously separated, forming loose iron oxide, and the metal surface will be continuously rusted.

316l Stainless Steel Plate

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