Anyone who has data i.e physical properties related to duplex stainless steel DIN 1.4462 between temperature range of 800°c-1200°c plz share
High Chromium content causes embrittlement above 300oC.
1050 - 1100oC is around the annealing temperature for the steel.
I highly doubt whether you will be able to source properties for this material at the temperatures you are looking for without performing the tests yourself.