Consider an 18-8 Mo steel component (Animated Figure 9.41) that is exposed to a temperature of 500C(773K). What is the maximum allowable stress level for a rupture lifetime of (a) 1 year? MPa (b) 15 years? MPa \begin{tabular}{|l|} \hline Larson-Miller parameter = \\ 12103(Rh) \\ Larson-Miller parameter = \\ 2.2103(Kh) \\ Stress =6.9MPA \\ Stress =1103psi \\ \hline \end{tabular}