Dev Null wrote:

"Tim Williams" wrote in
:



"Dev Null" wrote in message
. ..


I want to buy a few square feet of 0.005 inch thick sheet to
make some parts that are about three inches by three inches.
The parts are flat leaves that slide across each other to form
a shutter. I want some kind of alloy that will resist warping
if the parts are heated to about 800F for a short time.


That's not terribly hot. Would stainless foil (well, not quite
foil, but not really sheet) do it?

Tim




That's what is used now and it's warping. I don't know the exact
temperature but it's hot enough to leave the current parts black
and blue and warped, let's say 1400F then? That's at least a red
heat. There's got to be something better. I've tried a bunch of
companies but they either would not recommend an alloy or didn't
have anything as thin as 0.005 inch. I'll take something a little
thicker if I can find it. If I have to make a new part I want it
to last forever. I'm willing to pay a premium for this sheet.


Sheet will just warp. The only way to stop it is to control the
geometry so that warpage doesn't cause a problem. Not knowing the shape
or use of the part I can only use the example of a laser cut slot in the
sheet to give some warpage control.

There are lots of materials that will take the heat...T321 stainless is
one example. 80-20 stainless is another but may be harder to find in
sheet form. Maybe you could leak some more info about the application?

Koz