|
|
|
|
|||||
|
||||||
From: Mike Maurice (no email)
Date: Thu Dec 01 2005 - 14:14:49 EST
There was a question brought up the other day about attaching
aluminum with stainless steel screws. An alternative is to use
aluminum rivets. It so happens that McMaster sells rivets which I
have reason to believe are made from 5052 alloy, in some cases. This
alloy appears to be a very suitable one for use in a marine
environment. See below...
http://www.mcmaster.com/ctlg/DisplCtlgPage.asp?ReqTyp=CATALOG&CtlgPgNbr=3112&CtlgEdition=&sesnextrep=534246825533946&ScreenWidth=1024&McMMainWidth=601
Catalog Page 3112.
Here is a page to High Strength rivets, where the extra strength is
primarily in shear, but adds about 200 pounds in tension, in the 1/4
inch sizes. There are also Monel ones, which may be even better for marine use.
Catalog page 3114.
5xxx Series. The major alloying element is Magnesium an when it is
used as a major alloying element or with manganese, the result is a
moderate-to-high-strength work-hardenable alloy. Magnesium is
considerably more effective than manganese as a hardener, about 0.8%
Mg being equal to 1.25% Mn, and it can be added in considerably
higher quantities. Alloys in this series possess good welding
characteristics and relatively good resistance to corrosion in marine
atmospheres. However, limitations should be placed on the amount of
cold work and the operating temperatures (150 degrees F) permissible
for the higher-magnesium alloys to avoid susceptibility to
stress-corrosion cracking.
1/4 inch rivets are rated at over 600 lbs strength, each and cost
about 10 cents or so. The 1/4 inch stuff requires an expensive $150
tool to use, but the smaller sizes can be used with normal sized and
available rivet guns.
Here is the technical data sheet for the 5052 alloy.
Regards,
Mike
Capt. Mike Maurice
Tualatin(Portland), Oregon
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
To unsubscribe send email to
with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.
|