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Exam API-571 All Questions

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Exam API-571 topic 1 question 64 discussion

Actual exam question from API's API-571
Question #: 64
Topic #: 1
[All API-571 Questions]

Which of the following materials is susceptible to CO² corrosion?

  • A. Carbon steel
  • B. Stainless steel
  • C. Duplex stainless steel
  • D. Both B and C
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Suggested Answer: A 🗳️

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ahmadmm
1 year, 4 months ago
Carbon steel and low-alloy steels are affected to CO2 Corrosion. Increasing the level of chromium in steels offers no major improvement in resistance until a minimum of 12 % Cr is reached, i.e. Type 410 SS. 300 series austenitic SS is highly resistant to CO2 corrosion.
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