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Views: 0 Author: Site Editor Publish Time: 2020-09-03 Origin: Site
How to improve the corrosion resistance of stainless steel?
Stainless steel's resistance to ferric oxide formation results from the presence of chromium in the alloy, which forms a passive film that protects the underlying material from corrosion attack, and can self-heal in the presence of oxygen. Corrosion resistance can be increased further, by:
increasing the chromium content to levels above 11%;
addition of 8% or higher amounts of nickel;
and addition of molybdenum (which also improves resistance to "pitting corrosion").
The addition of nitrogen also improves resistance to pitting corrosion and increases mechanical strength.Thus, there are numerous grades of stainless steel with varying chromium and molybdenum contents to suit the environment the alloy must endure.
