[Column] What is stainless steel? Protecting against rust with teamwork!
The excellent corrosion resistance of stainless steel is due to the formation of a passive film by chromium and its self-repairing function!
When chromium is present in stainless steel at 10.5% or more, rusting hardly occurs in general environments* (excluding coastal areas and environments exposed to chemicals). This is because the chromium in stainless steel combines with oxygen in the atmosphere to form a "passivation film," which coats the surface like a protective layer, preventing direct contact between the base metal and oxygen. By the way, this passivation film is incredibly thin, measuring only 1 to 3 nm (0.000001 to 3 millimeters), so it is naturally invisible to the naked eye. What’s remarkable about this passivation film is that it has a "self-repairing function." *For more details, please refer to the related links. For further inquiries, feel free to contact us.
- Company:太華工業
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