An S-590 alloy component (Figure 9.39) must have a creep rupture lifetime of at least 100...

An S-590 alloy component (Figure 9.39) must have a creep rupture lifetime of at least 100 days at 500°C (773 K). Compute the maximum allowable stress level.

Figure 9.39 Logarithm stress versus the Larson–Miller parameter for an S-590 alloy.