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Exam API-571 All Questions

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Exam API-571 topic 1 question 169 discussion

Actual exam question from API's API-571
Question #: 169
Topic #: 1
[All API-571 Questions]

Stainless steels with sigma can normally withstand normal operating stresses but upon cooling to temperatures below _______ may show a complete lack of fracture toughness as measured by a Charpy impact test.

  • A. 800º F
  • B. 600º F
  • C. 500º F
  • D. 400º F
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Suggested Answer: C 🗳️

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ahmadmm
1 year, 1 month ago
Stainless steels with sigma can normally withstand operating stresses at operating temperatures but uponcooling below about 500 °F (260 °C) may show a complete lack of fracture toughness as measured in a Charpy impact test.
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