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?

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?
A . Carbon steel
B . 300 Series SS
C . 400 Series SS
D . Both B and C

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Answer: A