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Re: Welp, just sold my last boat for sale................

By: micro in 6TH POPE | Recommend this post (0)
Sat, 24 Oct 20 4:56 PM | 26 view(s)
Boardmark this board | 6th Edition Pope Board 		Msg. 07711 of 60014
(This msg. is a reply to 07706 by Zimbler0)
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ZIm

The reason why the aluminum would degrade in the two different material examople is due to a property of metals that allows ions to interact between the two dissimilar metals if they are metal.. Galvanic corrosion is what it is called.

YES, The Aluminum is softer. Aircraft aluminum however is pretty tough stuff.

But this is going to hold WOOD, not another sheet of steel.

Stainlessteel will RUST with iron oxide. It can and will get rusty. Aluminum will not.. It might turn over time a little whitish bt not oxide colored...

So it is a much better choice to use in Marine environments. IF one predrills the holes and then uses a hard aluminum screw and run it into the wood, they will have no trouble fastening the two boards together. This is a salt water environment so it will have a much harsher effect on stainless. All one has to do is look at some older stainless steel utensils . They can exhibit and show red rust over time..

That is why I would be more likely to use strong aluminum screws in place of the stainless.

Yep. It's just me. I am anal and if it was mine it is exactly what I would do..

I doubt Nemo will becuase he is just looking to sell it and will never see it again.. Don't blame him..

I would not argue the tensile strength of the stainless versus the Aluminum but I don;t think horizontal shear force is going to be an issue in this case...


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The above is a reply to the following message:
Re: Welp, just sold my last boat for sale................
By: Zimbler0 in 6TH POPE
Sat, 24 Oct 20 4:29 PM 		Msg. 07706 of 60014

Micro > That aluminum screw will not rust.


Boss,
I have a distinct feeling 'we' might need to do more research into
this area.

>>>
do aluminum screws degrade?
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Aluminum as a metal is lighter and doesn't rust. Aluminum corrosion does occur though, here are the reasons why corrosion occurs and some tips on how to prevent or correct corrosion if it does occur in your next metal fabrication project.
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Tips to consider when using stainless screws on aluminum. Do not expose to water; Salty water is an electrolyte that can easily corrode either the aluminum or stainless steel material when they come into contact with each other. Therefore, it is important to always separate the two metals as soon as possible especially if the environment has ...
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Aluminum is rust-resistant, meaning it doesn't degrade due to oxidation caused by iron and oxygen. Rust only occurs in iron and other metals that contain iron. Steel, for example, is susceptible to rust because it contains iron.
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For example, if the base material is a large sheet of aluminum, then using very small stainless steel screws will not dramatically decrease the life. Conversely, if you use aluminum to attach a large sheet of stainless steel, the aluminum life will be dramatically shortened.
>>>

Just quick notes from a quick duck-duck-go search.

Zim.

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