300 Series SS, 5Cr, 9Cr and 12Cr alloys are not susceptible to ________ at conditions normally seen in refineries.

To prevent carburization, select alloys with a strong surface oxide or sulfide film former such as ________.

Inspecting for high-cycle fatigue can be difficult since:

Graphitization can be prevented by using chromium containing low alloys steels for long-term exposure above
________.

A form of fatigue cracking in which cracks develop under the combined effects of cyclic loading and corrosion is called _______. Cracking often initiates at stress concentrations such as a pit in the surface.