API-571 Exam Question 121
Naphthenic acid corrosion is a form of high temperature corrosion that occurs primarily in crude and vacuum units and downstream units that process certain fractions that contain naphthenic acid. Which of the following materials is susceptible to naphthenic acid corrosion?
API-571 Exam Question 122
Dissimilar weld metal cracking occurs because the coefficients of thermal expansion between ferritic steels and 300 Series stainless steels differ by ________ or more.
API-571 Exam Question 123
Which of these materials are susceptible to brittle fracture?
API-571 Exam Question 124
Atmospheric corrosion:
API-571 Exam Question 125
It is generally accepted that stresses approaching _________ are required for SCC to occur so that thermal stress relief is effective in preventing caustic SCC.
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