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  • Total Questions: 151
  • Updated on: Nov 02, 2026
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API-571 exam dumps

API API-571 Value Package

(Include: PDF + Desktop Test Engine + Online Test Engine)

  • Exam Code: API-571
  • Exam Name: Corrosion and Materials Professional
  • No. of Questions: 151 Questions and Answers
  • Updated: Nov 02, 2026

Every candidate studies differently, so Actual4Labs offers the API Corrosion and Materials Professional practice questions in three formats: a printable PDF, a desktop test engine for Windows, and an online test engine that runs in any browser. Pick the one that fits your routine and start working through 151 questions today.

API API-571 Exam Syllabus Topics:

SectionObjectives
Damage Mechanisms- Environment-Assisted Cracking
  • 1. Hydrogen-Induced Cracking (HIC) / Stepwise Cracking
  • 2. Carbonate Stress Corrosion Cracking
  • 3. Hydrogen Embrittlement
  • 4. Ethanol Stress Corrosion Cracking (SCC)
  • 5. Amine Stress Corrosion Cracking
  • 6. Polythionic Acid Stress Corrosion Cracking (PTA-SCC)
  • 7. Sulfide Stress Cracking (SSC) / Hydrogen Stress Cracking
  • 8. Ammonia Stress Corrosion Cracking
  • 9. Chloride Stress Corrosion Cracking (Cl-SCC)
  • 10. Caustic Stress Corrosion Cracking
  • 11. Stress-Oriented Hydrogen-Induced Cracking (SOHIC)
- High-Temperature Hydrogen Attack (HTHA)
  • 1. Decarburization
  • 2. Internal Hydrogen Attack (IHA)
- Uniform or Localized Loss of Thickness
  • 1. Dealloying (Selective Leaching)
  • 2. Soil Corrosion
  • 3. Cooling Water Corrosion
  • 4. Atmospheric Corrosion
  • 5. Caustic Corrosion
  • 6. Corrosion Under Insulation (CUI)
  • 7. Boiler Water / Condensate Corrosion
  • 8. Flue Gas Dew Point Corrosion
  • 9. Galvanic Corrosion
  • 10. CO2 Corrosion
  • 11. Microbiologically Influenced Corrosion (MIC)
  • 12. Flow-Accelerated Corrosion (FAC) / Flow-Assisted Corrosion
- High Temperature Corrosion (800°F / 425°C and above)
  • 1. Sulfidation
  • 2. Oxidation
  • 3. Fuel Ash Corrosion
  • 4. Carburization
  • 5. Nitriding
  • 6. Metal Dusting
- General / Mechanical
  • 1. Strain Aging
  • 2. Dissimilar Metal Weld (DMW) Cracking
  • 3. Hydrogen Embrittlement
  • 4. Softening (Spheroidization)
  • 5. Atmospheric Corrosion
  • 6. 885°F (475°C) Embrittlement
  • 7. Corrosion Under Insulation (CUI)
  • 8. Cavitation
  • 9. Brittle Fracture
  • 10. Fatigue
  • 11. Zinc Embrittlement
  • 12. Vibration-Induced Fatigue
  • 13. Liquid Metal Embrittlement (LME)
  • 14. Thermal Fatigue
  • 15. Erosion/Erosion-Corrosion
  • 16. Galvanic Corrosion
  • 17. Temper Embrittlement
  • 18. Fretting / Fretting Corrosion
  • 19. Stress Relief Cracking
  • 20. Mechanical Fatigue
  • 21. Graphitization
  • 22. Sigma Phase Embrittlement
  • 23. Metal Dusting
  • 24. Creep / Stress Rupture

API-571 Exam FAQ: What Candidates Ask Most

The API API-571 exam, officially titled Corrosion and Materials Professional, is the required test for earning the ICP Programs certification, a credential at the Professional level. Passing it validates the skills API expects from certified professionals, and it can also support progress toward related credentials such as API 510 Pressure Vessel Inspector, API 570 Piping Inspector, API 653 Aboveground Storage Tank Inspector.

The API-571 exam includes 100 questions, and you have 3.5 hours (210 minutes) to complete it. Before exam day, divide the available time by the question count so you know the pace you need to hold, and practice flagging time-consuming items for review instead of stalling on a single question. Timed sessions in the Actual4Labs test engine are the easiest way to build that rhythm before it counts.

You need Minimum passing score determined by API using the modified Angoff method (typically around 70%) to pass the API-571 exam, and the official registration fee is $900 USD (exam fee through API). Keep in mind that a failed attempt means paying that fee in full again for a retake, so avoid booking your seat on a hunch. Work through the Actual4Labs practice test until your scores sit comfortably above the passing requirement before you schedule the exam.

API asks candidates to meet the following requirement before registering: Candidates must hold a current API 510, 570, or 653 certification to automatically qualify. Otherwise, qualification is based on education and a minimum of 1-5 years of experience in the petrochemical industry acquired within the last 10 years.. Exam policies do change, so confirm the latest details on the official exam page at https://www.api.org/products-and-services/individual-certification-programs/certifications/api571 before you book.

Yes. Actual4Labs offers a free PDF demo of the API Corrosion and Materials Professional practice questions, so you can judge the quality and format before purchasing. After you buy, your purchase includes 365 days of free updates; if the product expires after that period, you can extend the update service at a 50% discount from your member zone.

Every Actual4Labs order is covered by a 100% Money Back Guarantee. If you take the corresponding API-571 exam within 60 days of purchase and do not pass, send a scan of your exam enrollment slip together with your official Score Report PDF within two days of the exam date, and your claim will be processed within seven days. The candidate name must match the payer name, and the guarantee does not apply if you take the exam within three days of purchase, if you downloaded the product but never took the exam, or to free materials and expired orders. If you would rather have fresh material than a refund, you can exchange your purchase for two additional exam products of equal value at no cost and keep the update service on your original product. Delivery itself is instant: your download is available right after payment and a copy is emailed to you within one minute — if nothing arrives within two hours, contact our support team. You may install the software on as many computers as you need.

The API Corrosion and Materials Professional exam is organized into 1 major domains. Some of the key domains include:

  • Damage Mechanisms

Scroll up to the Exam Topics section for the complete breakdown, and use it to plan how much study time each domain deserves.

API Corrosion and Materials Professional Sample Questions:

An NPS 3/4 (DN 20) carbon steel unsupported high-point vent on a steam line has failed by cracking.
The most likely cause is:

  • A. original weld defect.
  • B. sulfide stress cracking.
  • C. thermal overload.
  • D. mechanical fatigue.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

Aggressive ammonium chloride corrosion often occurs:

  • A. When excess water washing dissolves too much ammonium chloride.
  • B. When the salts precipitate from high-temperature streams as they cool.
  • C. In the absence of a free water phase.
  • D. When dry salts are exposed to a small amount of free water.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

Differential expansion in bimetallic welds can give rise to:

  • A. Thermal fatigue
  • B. Reheat cracking
  • C. Stress corrosion cracking
  • D. Galvanic cracking
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

To detect wet insulation that might give rise to corrosion under insulation, which nondestructive examination (NDE) technique would be most useful?

  • A. Neutron backscatter
  • B. Low-intensity X-ray imaging scope
  • C. Deep penetrating eddy current
  • D. Spectroscopy
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

The most effective mitigation for amine stress corrosion cracking is:

  • A. Changing amine solution concentration
  • B. Adding 0.2% water to the amine solution
  • C. Post-weld heat treatment
  • D. Operating below 140°F (60°C)
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

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