Effect of mirror finishing of stainless steel plate on corrosion resistance

Stainless steel has a protective film of Cr2O3, but will the polished surface affect the protective film and reduce corrosion resistance?

This film is obtained after Cr oxidation. After 8K polishing, the steel surface will continue to oxidize to form a Cr2O3 protective film, and the corrosion resistance will not be reduced.

However, the grinding fluid on the surface after grinding must be cleaned up without any residue, otherwise the corrosion resistance of stainless steel will be reduced.