[TheForge] Aluminium

[David E. Smucker]

What is the problem / concern with UV?  I have never heard of that being an 
issue with aluminum.  Corrosion can be a big issue with high performance 
alloys such as 2024 or 7075.  That is why almost all aircraft / aerospace 
alloys are clad with pure aluminum.  The product is called "Alclad" and is 
done at hot rolling by forge welding (in the rolling mill) a layer of pure 
aluminum to the alloy in the center.  No flux is used.  Typical at the 
cladding operation the alloy is 22 inch thick with a 1 inch top and bottom 
pure aluminum added.  When rolled out to finish plate or sheet you get a 
thin surface pure aluminum and a alloy core.

If you want to paint the aluminum there are a series of chromate primers 
made for aluminum.  Your industrial paint supply is the best source.

Dave

--------------------------------------------------
From: "Mark A. Pesetsky" <pesetsky at Princeton.EDU>
Sent: Tuesday, May 27, 2008 12:42 PM
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Subject: [TheForge] Aluminium

>
>
>
> Any suggestions on the best sealing material w/UV protection for
> aluminum?
>
> Thanks
> Mark
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