API 571 Certification (Corrosion & Materials) Practice Test

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Prepare for the API 571 Certification Exam. Study with flashcards and multiple choice questions with hints and explanations. Gear up for your certification success!

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Which nickel-based alloy is specifically noted for corrosion resistance against hydrogen embrittlement?

Alloy 600
Alloy 400
Alloy 800
Alloy 20

The correct answer is: Alloy 600

Nickel-based alloy 600 is specifically noted for its resistance to hydrogen embrittlement due to its excellent overall corrosion resistance and ductility. This alloy is often utilized in environments where hydrogen is present, such as in chemical processing and petrochemical industries. It maintains strength and can withstand high temperatures while resisting stress corrosion cracking, a common issue associated with hydrogen embrittlement. This makes alloy 600 particularly valuable in applications subject to harsh conditions where hydrogen may pose a risk. In contrast, alloys like 400, 800, and 20 have different compositions and properties that may not provide the same level of protection against hydrogen embrittlement. While these alloys possess favorable characteristics for specific applications, they may not be as effective in resisting the effects of hydrogen as alloy 600.