Does anyone know where I can find information on the properties of SS sheet as it pertains to permeation at elevated temperatures?
We have .001" 316L stainless steel sheet used as a pressure diaphragm with approximately 200 psi of Nitrogen behind it.
We have run numerous units though aging tests (one week at 400°F) and every sample has shown a reduction in pressure, though these reductions have not been consistant. Some sample units will decrease 5 psi and others up to 50 psi.
We have ruled out all possible causes of this - except permeation throught the diaphragm. Has anyone seen this phenomenon before, or know where I can find information concerning this?
We have .001" 316L stainless steel sheet used as a pressure diaphragm with approximately 200 psi of Nitrogen behind it.
We have run numerous units though aging tests (one week at 400°F) and every sample has shown a reduction in pressure, though these reductions have not been consistant. Some sample units will decrease 5 psi and others up to 50 psi.
We have ruled out all possible causes of this - except permeation throught the diaphragm. Has anyone seen this phenomenon before, or know where I can find information concerning this?