[huptjakke]

I need to design a reactor that can work at 900°C. Conditions require the reactor to be build out of an Fe-Cr-Al alloy (preferably R135, but others could also work). Now to calculate the required thickness of the material I need the strength at higher temperatures. If anyone knows/can find anything about the strength (or creep properties) of the alloys at higher temperatures (even if it's just at 200°C, really ANYTHING), please post it here and if possible your source.

I found some properties at http://www.rescal.com/r135.htm, but not at higher temperatures than room temperature.

I'm pretty desperate here 

Thanks