Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-23-2016, 11:24 AM   #1
3 Rivet Member
 
vanster's Avatar
 
1967 17' Caravel
Oakland , California
Join Date: Mar 2012
Posts: 147
Images: 1
5052 Aluminum question HELP

We are in the process of putting 0.32 5052 panels in our Caravel
Part of the ceiling and about 70% of the interior side walls. The 5052 that I bought has a coating on it but do I need to have the sheets anodized to prevent discoloration?
__________________

__________________
vanster is offline   Reply With Quote
Old 02-23-2016, 02:24 PM   #2
Rivet Master
 
Belegedhel's Avatar
 
1973 21' Globetrotter
Houston , Texas
Join Date: Sep 2009
Posts: 2,199
Find out what the coating is and how permanent if is. There are many stories of forum members installing raw, in coated aluminum on their interiors only go find that every fingerprint becomes a permanent smudge. Some have recommended wax, some of us have tried spraying clear coats once the sheets are in place. This is what I did, and got marginal results, like many others. The coated sheets that are installed at the factory have a plasticoat on them from the supplier. These sheets are available, but the price is staggering.

Good luck!
__________________

__________________
Belegedhel is offline   Reply With Quote
Old 02-24-2016, 10:40 PM   #3
4 Rivet Member
 
sgschwend's Avatar
 
1986 25' Sovereign
2008 F350, 6.4L diesel , Oak Harbor, WA
Join Date: Sep 2015
Posts: 437
Images: 11
Clear Alodine or Chromate Conversion. Check it out, looks like you could do this yourself.

Certainly not a robust as anodized, but for interior surfaces should do well. At HP there was many aluminum sheet metal parts coated that way and they held up very well for many years.
__________________
sgschwend is offline   Reply With Quote
Old 02-25-2016, 09:37 AM   #4
3 Rivet Member
 
vanster's Avatar
 
1967 17' Caravel
Oakland , California
Join Date: Mar 2012
Posts: 147
Images: 1
I got lucky and found a shop that is only a few miles from me that can anodize a 10ft x 4ft sheet.
This will give me the hard surface that we are looking for.
__________________
vanster is offline   Reply With Quote
Old 02-25-2016, 09:18 PM   #5
Rivet Master
 
2015 25' Flying Cloud
2016 30' Flying Cloud
Blenheim Ontario , Ontario
Join Date: May 2015
Posts: 1,264
Quote:
Originally Posted by sgschwend View Post
Clear Alodine or Chromate Conversion. Check it out, looks like you could do this yourself.

Certainly not a robust as anodized, but for interior surfaces should do well. At HP there was many aluminum sheet metal parts coated that way and they held up very well for many years.
Both answers are correct; anodized is best, and alodine is good.
If stress is involved, see if shot-peening is doable.
(A retired aircraft A.M.E.)
__________________
MelGoddard is offline   Reply With Quote
Old 02-26-2016, 11:21 AM   #6
Rivet Master
 
Wabbiteer's Avatar
 
1973 27' Overlander
1972 29' Ambassador
St. Paul , Minnesota
Join Date: Apr 2006
Posts: 1,912
Images: 2
Blog Entries: 2
Many degreasers are actually be chemically active on aluminum since it is so highly reactive - translation being if you use the wrong degreaser then the next process steps like Alumaprep & Alodine will be ineffective as the molecular pores of the aluminum have already been passivized by the degreaser but with the wrong bonded molecule(s) than those the other steps are designed around.

Degreased meaning a water film wets the entire piece without any fingerprints or other oil/wax causing the water to resist complete wetting, a film instead of sheeting.

Where I ran into this was cleaning the exterior shells interior trying to get all the cooking fumes and forty years of molds/mildew and oxidation off, yes I found a cleaner that sure brightened the metal up but when I did the alumiprep33 & alodine the alodine did not color change the aluminum (there is a colorless flavor too) at all when it should have been a very light gold/orange/tan.

Repeat after me: Use "Simple Green EXTREME" on bare aluminum.

Applied correctly phosphoric/chromic acid treatment like Alumiprep33 with Alodine seal the metal surface almost as well as anything short of anodizing, which then provides a decent bite for paints or clear coating or waxes.
__________________

__________________

Wabbiteer is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
5052 Aluminum vanster Interior Restoration Forum 4 02-21-2016 08:36 PM
5052 Ok for exterior skin patches? mnmhays Ribs, Skins & Rivets 6 04-10-2015 08:15 AM
3003 vs 5052 for Framing C channel bass-o-matic General Repair Forum 4 03-26-2014 01:46 PM
2024 aluminum skins VS 5052 seoane Vintage Kin 29 05-19-2012 07:48 PM
2024,5052,or what crowldawg Belly Pans & Banana Wraps 5 02-19-2008 08:24 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:56 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.