Caustic embrittlement is a form of stress corrosion cracking characterized by surface-initiated cracks that occur in piping and equipment exposed to caustic, primarily adjacent to non-PWHT welds. Which of the following materials is the most resistant to embrittlement?
Answer(s): B
___________ is the result of cyclic stresses caused by variations in temperature.
Answer(s): D
Corrosion due to acidic sour water containing H²S at a pH between 4.5 and 7.0 is called sour water corrosion. Carbon dioxide (CO²) may also be present. Which of the following materials is susceptible to sour water corrosion?
Answer(s): A
________ of a component is the most important factor in determining a components resistance to mechanical fatigue.
A condition where steel loses strength due to the removal of carbon and carbides leaving only an iron matrix is called decarburization. This occurs during high temperatures, during PWHT and from exposure to fires. Which of the following materials is not affected by this?
Post your Comments and Discuss API API-571 exam prep with other Community members:
Our website is free, but we have to fight against AI bots and content theft. We're sorry for the inconvenience caused by these security measures. You can access the rest of the API-571 content, but please register or login to continue.