Jerry Hey wrote:
     >
     > Paul,
     > Is there a  good source for  Iconel sheet.  I am thinking of
     > fabricating some rectangular bends and straight sections that could be
     > combined to build an exhaust system.   What do  you think an ideal
     > section would look like, dimensions and wall thickness?    Jerry

     Boeing surplus had some a year or so ago. So did Pratt and Whitney
     in Connecticut.

     You probably need square with the equivalent area of a 2 inch diameter tube.
     Say 1.75 by 1.75. What the heck 2 by 2.

     With Inconel you might get away with .035. I feel a bit uncomfortably
     with that so .040 would probably be my choice for Inconel.

     IMHO the weight savings would not be worth the additional cost it over .065 321.

     Paul Lamar

But doesn't inconel handle the higher temperature better? Which would make it 
a preferred metal for Rotary exhaust systems,
correct, yes, no?

Tom

Yes if you don't mind the cost you can save some weight.
321 SS if thick enough should last for years.

Paul Lamar
 
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