Description
Why Is Passivation Important?
Stainless steel can resist corrosion thanks to a passive chromium oxide
layer that forms on its surface. The formation of this protective layer is
called passivation.
Passivation occurs when the chromium contained in the stainless steel meets
the oxygen in the air. This chemical reaction forms a passive chromium oxide layer,
which will protect the surface of stainless steel.
Mechanical abrasion, thermal treatment, welding, salt, strong acids, and galvanic
contamination will destroy this protective layer and expose the metal to corrosion.
To fully restore the corrosion resistance of stainless steel and avoid any interference
in the passivation process, the heat tint as well as other surface contaminants
must be removed.
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