| The
corrosion resistance of stainless steel and nickel alloy
is dependent on a thin invisible film on the steel surface,
the passive film. There are, however, environments that
cause permanent breakdown of the passive layer. Under
circumstances where the passive layer cannot be rebuilt,
corrosion occurs on the unprotected surface. Different
media can cause different types of corrosion attack
that may vary in nature and appearance. Several forms
of corrosion can occur on stainless steels and nickel
alloy plates.
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