From: J. Forster (jfor@quik.com)
Date: Mon Sep 27 2004 - 22:39:16 PDT
> How long do you need to soak parts before the embrittlement occurs?
> I've left high strees parts sit overnight (days even) in phosphoric
> acid, and none of the nuts/bolts/brackets have failed. Probibly the
> most stressed part is a jeep lower shock mount... the one that sits
> under the springs, clamped to them by u-bolts, with the axel on top.
There are loads of articles found by Google if you put in 'hydrogen
embrittlement phosphoric acid'. There seem to be other cleaners / derusters that
don't cause the problem and inhibitors that reduce it.
-John
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