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Exam API-571 All Questions

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Exam API-571 topic 1 question 50 discussion

Actual exam question from API's API-571
Question #: 50
Topic #: 1
[All API-571 Questions]

Hardness levels above ________ are highly susceptible to hydrogen stress cracking (HF). Time-to-failure decreases as the hardness increases.

  • A. 225 BHN
  • B. 237 BHN
  • C. 241 BHN
  • D. 247 BHN
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Suggested Answer: B 🗳️
by ahmadmm at Sept. 5, 2023, 8:21 a.m.

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ahmadmm
1 year, 4 months ago
Susceptibility to Hydrogen Stress Cracking in HF Acid increases with increasing hardness. Steels with hardness levels above HRC 22 (HB 237) are highly susceptible.
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