Free API API-571 Exam Questions
Absolute Free API-571 Exam Practice for Comprehensive Preparation
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API API-571 Exam Questions
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Provided By: API
- Exam: Corrosion and Materials Professional
- Certification: Individual Certification Programs
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Total Questions: 454
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Updated On: Jan 14, 2026
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Rated: 4.9 |
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Online Users: 908
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Question 1
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With sulfuric acid corrosion, mix points with _______ cause heat to be released and high
corrosion rates can occur where the acid becomes diluted.
Answer: A
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With sulfuric acid corrosion, mix points with _______ cause heat to be released and high
corrosion rates can occur where the acid becomes diluted.
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Question 2
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Spheroidization and graphitization are competing mechanisms that occur at overlapping temperature ranges. Spheroidization tends to occur preferentially above _______ while
graphitization predominates below this temperature.
Answer: B
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Spheroidization and graphitization are competing mechanisms that occur at overlapping temperature ranges. Spheroidization tends to occur preferentially above _______ while
graphitization predominates below this temperature.
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Question 3
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Which if the following materials are not susceptible to hydrogen stress cracking?
Answer: C
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Which if the following materials are not susceptible to hydrogen stress cracking?
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Question 4
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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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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.
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Question 5
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Hydrogen blisters may form as surface bulges on the ID, the OD on within the wall
thickness of a pipe or pressure vessel. Blistering occurs from hydrogen generated by
______, not hydrogen gas from the process stream.
Answer: B
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Hydrogen blisters may form as surface bulges on the ID, the OD on within the wall
thickness of a pipe or pressure vessel. Blistering occurs from hydrogen generated by
______, not hydrogen gas from the process stream.