Does stainless steel rust?

When the surface of stainless steel brown rust spot (point), people feel surprised: think that "stainless steel is not rust, rust is not stainless steel, may be the steel has a problem". In fact, this is the lack of understanding of stainless steel a one-sided wrong view. Stainless steel will rust under certain conditions.

Stainless steel has the ability to resist atmospheric oxidation - namely, rust, but also has the ability to corrosion in the medium containing acid, alkali, salt - namely, corrosion resistance. However, its anti-corrosion ability varies with its chemical composition, processing status, service conditions and environmental media types. Such as 304 stainless steel, in the dry and clean atmosphere, there is absolutely excellent corrosion resistance, but it will be moved to the seaside area, in the sea fog containing a lot of salt, will soon rust; And 316 stainless steel performed well. Therefore, not any kind of stainless steel, in any environment can withstand corrosion, not rust.

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