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RE: [TR] Welding Question

To: "'Triumph Email List'" <Triumphs@autox.team.net>
Subject: RE: [TR] Welding Question
From: "Randall" <tr3driver@ca.rr.com>
Date: Wed, 22 Nov 2006 11:44:05 -0800
> My welding question is: can you weld a brass fitting to a 
> steel tank or does
> it take a special process?

Takes a special process, called brazing.

> I'm having my gas tank 
> cleaned/repaired and I
> want a fitting put in. They'll do the welding but can I use 
> brass or should
> I try and find steel NPT fittings?

Personally, I would opt for steel.  Brass is soft and apt to strip, which is
undesirable for a gas tank, IMO.

If I were doing it myself, I'd probably still braze the steel fitting in.
Brazing happens at a much lower temperature than welding, so has a lot less
potential for warping the tank.  It can also be undone at a future date, and
a different fitting (or bung) brazed back into the same hole.  If you weld
the fitting, then removing it will leave a larger hole that will have to be
repaired before a different fitting can be installed.

Randall


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