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Exam API-571 topic 1 question 188 discussion

Actual exam question from API's API-571
Question #: 188
Topic #: 1
[All API-571 Questions]

For a specific material, HTHA is dependent on temperature, hydrogen partial pressure, time and _________.

  • A. Stress
  • B. Pressure
  • C. Velocity
  • D. Alloy composition
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Suggested Answer: A 🗳️
by ahmadmm at Oct. 11, 2023, 8:54 a.m.

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ahmadmm
1 year, 1 month ago
High-Temperature Hydrogen Attack Resistance to HTHA increases with an increase in the alloy content, primarily the Cr and Mo content, of a steel. For a specific material, HTHA is dependent on temperature, hydrogen partial pressure, time, and stress level.
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