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| Why use
stainless steel nails? |
Stainless
steel has a unique resistance to corrosion and this is what sets stainless
apart from other steel.
The reason stainless steel produces good corrosion resistance is due to the
"passivity". The steel contains enough chromium when exposed
to oxygen it immediately acquires a protective invisible film (chromium
oxide CrO2 ) Under normal conditions this film affords sufficient
protection in most applications.
Both grades 304 and 316 have excellent resistance to corrosion, however 316
is more suitable for severe coastal locations and geothermal areas. Due to
the addition of slight more nickle than type 304 and 2-3% molybdeneum.
Corrosion of stainless steel nails can sometimes be initiated by the impact
on nail heads with a steel hammer. This surface damage is due to the
hammer and possible iron contamination on the surface of the nail head.
Nail heads should be protected from wind-blown sea salt and
washed regularly by rain or maintained in such a way as to remove the
deposited salt chlorides.
316 stainless is
recommended over 304 due to its superior resistance to corrosion. |
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