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POM elevated temperature strengh values

thread334-446810

POM elevated temperature strengh values

POM elevated temperature strengh values

(OP)
Hello,

I need to design a valve. Seat material POM.
Operating temperature is 80°C (176°F). I need the yield strength or compression strength... at least any strengh value for calculating the surface pressure.
at elevated temperatures. I only find ambient temp. values.

Anybody knows where to find that information?

THANKS!

RE: POM elevated temperature strengh values

(OP)
Thank you Rick!
I am sorry... i used google but was not able to find something like that except
http://www.hirosugi.jptechnicalmaterialPOM.html that page. Wasn't sure if its correct...

Unfortunately Eldon James only has values up to 70°C (160°F)for POM-C.


RE: POM elevated temperature strengh values

Fit an Arrhenius curve to the three values listed and extrapolate it. That should be fairly accurate as long as you don't cross a transition temp, which you shouldn't be doing anyway if you want the seat to perform properly.

Rick Fischer
Principal Engineer
Argonne National Laboratory

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