Why is the creep-fatigue interaction diagram for modified 9Cr-1Mo steel different in RCC-MR and ASME Sec-III?

The creep-fatigue interaction diagram for modified 9Cr-1Mo steel is different in RCC-MR and ASME Sec-III NH. Both the diagrams are bi-linear but locus is (0.3,0.3) in RCC-MR and (0.1,0.01) in ASME...

04 April 2015 8,982 2 View