Consider an 18-8 Mo stainless steel component (Figure 9.42) that is exposed to a temperatu...

Consider an 18-8 Mo stainless steel component (Figure 9.42) that is exposed to a temperature of 500°C (773 K).What is the maximum allowable stress level for a rupture lifetime of 5 years? 20 years?

Figure 9.42 Logarithm stress versus the Larson–Miller parameter for an 18-8 Mo stainless steel.