Yield strength At elevated temperature

Hello Everyone.

I have an alloy pipe material A335 P5. It has temperature of around 565 degree C. I want to know yield strength of same pipe material at 565 degree C temperature. It is not given in in table Y-1 of ASME section II Part D.

Is there anyway to get yield strength at higher temperature which is not given in table Y-1 of ASME Section II, Part - D ?

Regards,
Maulik

sound that you want to use a material beyond its capabilities. Or not?

I don't think it's beyond the capability of the material since Section VIII Div 1 for instance allows the material to be used to 649°C. I'm curious though what Maulikrb87 intends to use the yield strength for.

Yes, you are right. 649C or 1200F.