Free API API-571 Exam Questions

Become API Certified with updated API-571 exam questions and correct answers

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Total 454 Questions | Updated On: Oct 24, 2026
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Question 1

Damage from sigma phase appears in the form of ________. 


Answer: C
Question 2

Changing to a more corrosion resistant and/or higher hardness material _________ improve cavitation resistance.


Answer: D
Question 3

Which material does not have an endurance limit?


Answer: C
Question 4

Many thermal fatigue cracks are filled with: 


Answer: C
Question 5

In most cases, brittle fracture occurs only at temperatures below the Charpy impact transition temperature. Steel cleanliness and ________ have a significant influence on toughness and resistance to brittle fracture.


Answer: C
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Total 454 Questions | Updated On: Oct 24, 2026
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