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From a free demo to 365 days of updates and a 60-day money back guarantee, Actual4dump covers every step of your API-571 preparation in 2026. API Corrosion and Materials Professional practice questions are ready the moment you are.

API API-571 Exam Syllabus Topics:

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

API Corrosion and Materials Professional: Your Questions, Answered

The API-571 exam (Corrosion and Materials Professional) is the official API exam that leads to the ICP Programs certification, a credential at the Professional level. Related certifications include API 510 Pressure Vessel Inspector, API 570 Piping Inspector, API 653 Aboveground Storage Tank Inspector. Actual4dump provides 151 practice questions to help you prepare for it with confidence.

The API-571 exam contains 100 questions and gives you 3.5 hours (210 minutes) to finish them. Before exam day, divide the total time by the question count so you know the pace you need to keep, and flag difficult items instead of getting stuck on them. Running at least one full timed session in the Actual4dump test engine is the best way to make that time pressure feel familiar.

You need Minimum passing score determined by API using the modified Angoff method (typically around 70%) to pass, 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, so it pays to test yourself first. When your scores on the Actual4dump timed practice tests stay consistently above the passing line, you are ready to book the exam.

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. Requirements can change over time, so always double-check the latest eligibility rules before you register on the official API exam page.

Yes. Actual4dump offers a free API-571 PDF demo so you can check the quality of the practice questions before purchasing. After you buy, your product comes with 365 days of free updates, and if it expires you can renew the update service at a 50% discount from your member zone.

Your purchase is protected by our 100% Money Back Guarantee. If you take the corresponding API-571 exam within 60 days of purchase and do not pass, send us a scan of your enrollment slip and the official Score Report PDF within two days of the exam, and the full refund will be processed within seven days. The candidate name must match the payer name; exams taken within three days of purchase, free materials, and expired orders are not eligible. If you would rather not refund, you can exchange your product for two free products of equal value and keep the update service on your original purchase. Delivery itself is instant: your material is available for download and is emailed to you within one minute of payment. If nothing arrives within two hours, contact our support team. There is no limit on how many computers you may install it on.

The API-571 syllabus is organized into 1 exam domains. Among the first three are Damage Mechanisms. For the complete breakdown of topics and subtopics, see the Exam Topics section above.

API Corrosion and Materials Professional Sample Questions:

The likelihood of brittle fracture is best lessened by:

  • A. Using carbon or low-alloy steels
  • B. Using thicker construction materials to lower the resulting stress
  • C. Frequent inspection of the piping or equipment involved
  • D. Postweld heat treatment (PWHT)
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).

Amine corrosion occurs principally on what class of materials?

  • A. Low Alloy Steels
  • B. Austenitic Stainless Steels
  • C. Duplex Stainless Steels
  • D. Carbon Steels
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).

(Which of the following can be used to confirm 885 °F (475 °C) embrittlement?)

  • A. Metallographic testing
  • B. Magnetic particle testing
  • C. Ductility testing
  • D. Bend or impact testing
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).

During inspection of a process unit where sulfidation from high-temperature hydrogen exists in H#S streams, the inspector should:

  • A. Use angle beam ultrasonic testing to look for cracking at the mid-wall
  • B. Take boat samples and send them to the lab for metallographic analysis
  • C. Use penetrant testing and magnetic-particle testing to look for surface-breaking cracks
  • D. Use ultrasonic testing or radiographic testing thickness readings to monitor for loss of wall thickness
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).

H#S content, pH, temperature, velocity, and oxygen concentration are critical factors of:

  • A. Sour water acid corrosion
  • B. Sulfuric acid corrosion
  • C. Polythionic acid cracking
  • D. Naphthenic acid corrosion
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).

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