> > > <Big Snip>

 > >
 > > > >
 > > > > What alloy do you guys use?  SS (like 321) will fail much more
 > easily at
 > > > > 1700 than inconel; especially if under any stress loads.  It gets
 > > > > inter-granular stress corrosion and loses it strength.
 > > > >
 > > > > Al

 >"Del Johnson, North Point Solutions, Inc" wrote:
 > >
 > > Inconel is really costly if you only need small quanitites.
In December I
 > > purchased some aluminum tube bends from a company in Michigan.
I asked the
 > > salesman if they deal in Inconel.  He said that if your only
buying a foot
 > > of tubing for a 90 degree bend it might cost $100 for the raw
material but
 > > if your talking 50 or a hundred feet of the material the costs
comes down
 > > dramatically.  I asked him to give me a price quote on some 90 degree
 > and 45
 > > degee bends plus some straight material for 10 exhaust systems and 50
 > > exhaust systems (I guessed on quantities of bends and straight
pieces) and
 > > told him that we might be able to put together a quantity
group purchase.
 > > He emailed me the prices but they don't seem to be in my
inbasket anymore.
 > > The prices were a lot cheaper than Burns Stainless (they only
have a large
 > > radius 120 degree bend).  If there is interest in going
together on a group
 > > purchase I can contact the salesmen and get another quote.  My
problem is
 > > that I'm not at a point of knowing what I/we need for bends.
 > >
 > > I was able to pick up 120' of 1.5" inconel and some filler rod
very cheap.
 > > The guy that does my welding is going to practice on a small
piece of it.
 > > He might be interested in welding up exhaust systems if we could
 > standardize
 > > on the design.  He is an machine shop and welding instructor
at the Lansing
 > > Community College but has his own equipment so he can do jobs
on the side.
 > >
 > > Let if there is interest in a group purchase.  If I get enough positive
 > > replies I will look get back with the salesmen to see if he
can resend me
 > > the quote which will give us an idea of what 90 and 45 degree
bends cost.
 > > We will have to get a final quote from them if we decide to go
ahead with a
 > > group order.  There are going to be different requirements for
Turbo vs NA
 > > and 13B vs 20B.  The salesmen will give us a cost per bent/type and the
 > cost
 > > of straight tubing so it doesn't matter if there are 4,5...n number of
 > > designs.  The more bends that they do of the same type the
cheaper per bend
 > > it becomes so if we can standardize on bend radius that would
be helpful.
 > > They can leave whatever lenght straight tail piece that is needed. Also,
 > > they can bend down to a very tight radius.  He suggested 3"
radius as the
 > > minmum for 2" inconel tubing.

 > I would be interested in a group buy of Inconel tubing/bends.
 > Mark Steitle
 > 20B
 > Austin, TX

Although I don't need it as I am going turbo it might
be nice to have a few lying around so count me in.

Paul Lamar

I would like a couple of straight pieces for the internal stubs.
What  is the wall thickness?
--
Jerry Hey

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