Does anyone know what the post cured upper temperature limits are for the Silicone 40A, Elastic 50A or Flexible 80A? I looked in the data sheets and all I found was the glass transition temp for these softer resins. I also looked at the SDS, but those are for the uncured resins. I’m looking for something like a melting point or thermal breakdown temperature. The maximum service temperature regular silicone rubber is 548.33 °F, but I’m not sure if it’s the same for the resin.
Hey @wolfmannm!
Thanks for taking the time to post your question!
I’m not a materials expert personally, but I did reach out to our materials team to get their thoughts on your question!
Based on ASTM D412 heat aging tests, Silicone 40A parts retain mechanical properties between -25 deg C and + 125 deg C. We’ll be publishing an updated TDS for Silicone 40A once we have UV aging data available as well.
We haven’t done this same testing quite yet for Elastic or Flex, but it’s great to know that this is something you’d like to figure out.
Without real data, the materials team did say that anecdotally, those materials would not be expected to stand up especially well to higher temps, but if we get more specific data I’ll be sure to provide that for you here!
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