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Exam API-571 topic 1 question 88 discussion

Actual exam question from API's API-571
Question #: 88
Topic #: 1
[All API-571 Questions]

Which of these materials are susceptible to brittle fracture?

  • A. Carbon steels
  • B. Low alloy steels
  • C. 400 Series SS
  • D. All of the above
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Suggested Answer: D 🗳️

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ahmadmm
1 year, 4 months ago
Carbon steels and low-alloy steels are of prime concern, particularly older steels. 400 series SS are also susceptible even if not embrittled. In addition, materials susceptible to an embrittling mechanism such as sigma phase embrittlement (3.56), 885 °F (475 °C) embrittlement (3.1), temper embrittlement (3.63), strain-aging embrittlement (3.60), or titanium hydriding (3.66) pose a risk for brittle fracture if they are sufficiently embrittled.
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