Consider an 18-8 Mo stainless steel component (Animated Figure 8.36 ) that is exposed to a temperature of 500C(773K). What is the maximum allowable stress level for a rupture lifetime of (a) 5 years? (b) 20 years? (a) MPa (b) MPa \begin{tabular}{|l|} \hline Larson-Miller parameter = \\ 12103(Rh) \\ Larson-Miller parameter = \\ 2.2103(Kh) \\ Stress =6.9MPA \\ Stress =1103psi \\ \hline \end{tabular}