The following alloys are being considered for a design that experiences intermittent high temperature exposures of up to 800 °F for 0.50 hours or less. If the design requires a yield strength at temperature of at least 120 ksi, which of the following alloys would you consider as candidates? (Use MIL-HDBK-5, show justification)
a. AISI 4130 Steel
b. Custom 455 Stainless Steel
c. Ti-6Al-6V-2Sn
d. Nickel Alloy 718