API API-571 Exam : Corrosion and Materials Professional

Exam Code: API-571
Exam Name: Corrosion and Materials Professional
Updated: Oct 09, 2026
Q & A: 151 Questions and Answers

About API API-571 Exam Questions

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API API-571 Exam Overview:

Certification Vendor:	American Petroleum Institute (API)
Exam Name:	API 571 - Corrosion and Materials Professional Certification Examination
Exam Number:	API-571
Available Languages:	English
Exam Format:	Multiple Choice
Real Exam Qty:	100
Passing Score:	Minimum passing score determined by API using the modified Angoff method (typically around 70%)
Exam Duration:	3.5 hours (210 minutes)
Related Certifications:	API 653 Aboveground Storage Tank Inspector API 510 Pressure Vessel Inspector API 570 Piping Inspector
Exam Price:	$900 USD (exam fee through API)
Certificate Validity Period:	3 years
Sample Questions:
Exam Way:	Computer-Based Testing (CBT) at PSI test centers
Pre Condition:	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.
Official Syllabus URL:	https://www.api.org/products-and-services/individual-certification-programs/certifications/api571

API API-571 Exam Syllabus Topics:

Section

Objectives

Topic 1: Damage Mechanisms

- High-Temperature Hydrogen Attack (HTHA)

1. Internal Hydrogen Attack (IHA)
2. Decarburization

- General / Mechanical

1. Hydrogen Embrittlement
2. Cavitation
3. Sigma Phase Embrittlement
4. Dissimilar Metal Weld (DMW) Cracking
5. Galvanic Corrosion
6. Zinc Embrittlement
7. Thermal Fatigue
8. Erosion/Erosion-Corrosion
9. Graphitization
10. Metal Dusting
11. Brittle Fracture
12. Atmospheric Corrosion
13. 885°F (475°C) Embrittlement
14. Vibration-Induced Fatigue
15. Liquid Metal Embrittlement (LME)
16. Corrosion Under Insulation (CUI)
17. Softening (Spheroidization)
18. Fretting / Fretting Corrosion
19. Strain Aging
20. Mechanical Fatigue
21. Stress Relief Cracking
22. Fatigue
23. Creep / Stress Rupture
24. Temper Embrittlement

- Uniform or Localized Loss of Thickness

1. Flow-Accelerated Corrosion (FAC) / Flow-Assisted Corrosion
2. Galvanic Corrosion
3. Caustic Corrosion
4. CO2 Corrosion
5. Atmospheric Corrosion
6. Soil Corrosion
7. Corrosion Under Insulation (CUI)
8. Cooling Water Corrosion
9. Microbiologically Influenced Corrosion (MIC)
10. Dealloying (Selective Leaching)
11. Boiler Water / Condensate Corrosion
12. Flue Gas Dew Point Corrosion

- Environment-Assisted Cracking

1. Hydrogen Embrittlement
2. Stress-Oriented Hydrogen-Induced Cracking (SOHIC)
3. Polythionic Acid Stress Corrosion Cracking (PTA-SCC)
4. Carbonate Stress Corrosion Cracking
5. Hydrogen-Induced Cracking (HIC) / Stepwise Cracking
6. Caustic Stress Corrosion Cracking
7. Sulfide Stress Cracking (SSC) / Hydrogen Stress Cracking
8. Amine Stress Corrosion Cracking
9. Ethanol Stress Corrosion Cracking (SCC)
10. Ammonia Stress Corrosion Cracking
11. Chloride Stress Corrosion Cracking (Cl-SCC)

- High Temperature Corrosion (800°F / 425°C and above)

1. Sulfidation
2. Metal Dusting
3. Nitriding
4. Carburization
5. Fuel Ash Corrosion
6. Oxidation

API-571 Exam Facts: What to Know Before You Commit

How many questions are on the API-571 exam, and how long does it take?

The latest exam information lists 100 questions for the API-571 exam, to be completed within 3.5 hours (210 minutes) minutes. Knowing the format cold is half the battle — timed practice handles the other half.

What topics does the API-571 exam cover?

These are the core domains of the API Corrosion and Materials Professional blueprint:

Damage Mechanisms

Are there any prerequisites for the API-571 exam?

API sets the following prerequisites for the API Corrosion and Materials Professional: 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..

Check the current requirements on the official certification page before scheduling.

Is the API-571 bank at DumpsActual valid and current?

Validity is maintained, not assumed. Our dedicated IT team checks the system and pushes new versions to the site continuously, so the API-571 bank on sale is always the latest — with expert-verified answers across the API Corrosion and Materials Professional objectives. You can also pick the format that fits your devices: an easy-to-read PDF, a Windows PC test engine, or a browser-based online engine for Windows, Mac, Android, and iOS. Questions? Support replies to instant messages and emails within two hours.

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What is your refund policy if I fail the API-571 exam?

Yes, we keep our promises — in writing. If you fail the corresponding exam within 60 days of purchase, email us a scanned copy of your enrollment slip and your official Score Report PDF within two days of the exam date; we process verified refunds in full within seven days. The exclusions are plain: exams taken within three days of purchase, candidate names that do not match the payer, and free or expired products. If you prefer, we will exchange your product for two others of equal value at no charge.

What score do I need to pass the API-571 exam, and what does it cost?

As of the latest information, the API-571 exam's passing score is Minimum passing score determined by API using the modified Angoff method (typically around 70%) and the registration fee is $900 USD (exam fee through API). API can adjust either figure, so verify both on the official site before you book.

API Corrosion and Materials Professional Sample Questions:

Question #1

(Repeated) The best method for finding damage from sigma phase embrittlement is:

A. Hardness testing
B. Magnetic particle testing
C. Ductility testing
D. Metallographic testing

Reveal Solution Discussion 0

Correct Answer: D 🗳️