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Stainless steel roof screws in aluminum boat.
This weakened aluminum causes it to deteriorate at a much faster rate.
As is the case with carbon steel screws a plated stainless steel screw is less likely to corrode aluminum.
However the dissimilar nature of these two metals puts them at risk of getting corroded resulting in their destruction altogether.
This results in the aluminum weakening.
I don t want to end up with holes in the hull like i have been told lead sinkers sinkers can do.
However stainless steel is reactive with aluminum and when a stainless steel screw is in contact with an aluminum base metal the aluminum is likely to corrode.
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Aluminum if left on.
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Ie will the stainless steel and gal break down before the aluminium or the other way around.
In this case the surface area of the aluminum is so large relative to the surface area of the stainless steel bolts that there is a very low risk of major corrosion.
It is no doubt that stainless steel screws are the best when it comes to holding together materials such as aluminum sheets so that when faced with a variety of elements they do not break open.
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An example of the safe use of stainless steel fasteners with aluminum would be where stainless steel bolts are used to secure aluminum roadway parapet guards.
Screws treated with a high quality coating consisting of zinc and aluminum.
When aluminum and stainless steel are used in an assembly together the electrons from the aluminum will begin to transfer into the stainless steel.
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This can lead to an extended life of the stainless steel.