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  • Total Questions: 151
  • Updated on: Oct 11, 2026
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  • Total Questions: 151
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API API-571 Exam Overview:

Certification Vendor:AMPP (Association for Materials Protection and Performance) / API ICP
Exam Name:API 571 - Damage Mechanisms Affecting Fixed Equipment in the Refining Industry (Corrosion and Materials Professional Certification Exam)
Exam Number:API-571
Exam Format:Multiple-choice, Computer-based testing (CBT)
Available Languages:English
Certificate Validity Period:3 years
Related Certifications:API 570
API 936
API 580
API 510
API 653
Recommended Training:AMPP Training & Certification Courses
API RP 571 Damage Mechanisms Training Providers
Exam Registration:AMPP API Individual Certification Program
Pearson VUE Exam Scheduling
Sample Questions: DOWNLOAD DEMO
Exam Way:Computer-based exam delivered via authorized testing centers (e.g., Pearson VUE)
Pre Condition:AMPP/API ICP certification requirements typically include relevant industry experience and may require prior inspection or corrosion-related certifications depending on eligibility route.
Official Syllabus URL:https://www.ampp.org/certification/api-individual-certifications

API API-571 Exam Syllabus Topics:

SectionObjectives
Topic 1: Corrosion Mechanisms- Aqueous corrosion
  • 1. Crevice corrosion
    • 2. Pitting corrosion
      • 3. Uniform corrosion
        • 4. Galvanic corrosion
          • 5. Microbiologically influenced corrosion (MIC)
            - High-temperature corrosion
            • 1. Oxidation
              • 2. Carburization
                • 3. Sulfidation
                  Topic 2: Refining Process-Specific Damage- Hydroprocessing units
                  • 1. High-pressure hydrogen service degradation
                    • 2. Hydrogen attack mechanisms
                      - FCC and sulfur recovery units
                      • 1. Erosion-corrosion interactions
                        • 2. High-temperature sulfidic corrosion
                          Topic 3: Materials Selection and Mitigation- Corrosion control strategies
                          • 1. Material selection principles
                            • 2. Corrosion inhibitors
                              • 3. Coatings and linings
                                Topic 4: Environmentally Assisted Cracking- Hydrogen-related damage
                                • 1. Hydrogen blistering
                                  • 2. Hydrogen embrittlement
                                    • 3. Hydrogen induced cracking (HIC)
                                      - Stress corrosion cracking
                                      • 1. Caustic cracking
                                        • 2. Chloride stress corrosion cracking
                                          Topic 5: General Knowledge of Damage Mechanisms- Overview of degradation in refining environments
                                          • 1. Materials performance fundamentals
                                            • 2. Damage mechanism classification
                                              Topic 6: Metallurgical Damage Mechanisms- High-temperature degradation
                                              • 1. Creep damage
                                                • 2. Thermal fatigue
                                                  • 3. Graphitization
                                                    - Embrittlement phenomena
                                                    • 1. Sigma phase embrittlement
                                                      • 2. Temper embrittlement

                                                        API API-571: Before You Decide

                                                        The API Corrosion and Materials Professional exam is split across 6 areas, with Metallurgical Damage Mechanisms, Materials Selection and Mitigation, Environmentally Assisted Cracking carrying the most weight. Study in proportion to those shares — the full outline is in the section above this page.

                                                        The API-571 exam is API's official certification test — passing it earns the API 571 Corrosion and Materials Professional credential at the Professional level. Its influence comes from how practical it is: employers use the API Corrosion and Materials Professional certificate as proof that you can do the work, not just talk about it. It also connects to API 510, API 570, API 653, API 580, API 936, giving the credential a natural next step.

                                                        Yes — Lead2PassExam offers a free demo of the API Corrosion and Materials Professional questions so you can see the quality before you pay. After purchase, 365 days of free updates are included; once the year expires, renew the update service at a 50% discount from your member zone.

                                                        Registration is handled through API's official channels:

                                                        Delivery of the exam itself is via Computer-based exam delivered via authorized testing centers (e.g., Pearson VUE).

                                                        Delivery is instant: your API-571 product is emailed within one minute of payment — if nothing arrives within 2 hours, check spam and contact our 7x24 support; we reply within two hours and resend immediately. On failure, the guarantee has written terms: sit the corresponding API-571 exam within 60 days of purchase, submit a scanned enrollment slip and the official Score Report PDF within 2 days after the exam, and the refund completes within 7 days. The policy covers the corresponding exam only; attempts within 3 days of purchase, exams never actually taken, free materials, and expired orders are excluded, and the candidate name must match the payer name. If you prefer, exchange your product for two free exam products of equal value and keep the update service on the original.

                                                        Yes, the vendor recommends these options:

                                                        Training covers the theory; the 151 practice questions for the API-571 exam from Lead2PassExam test it under real exam conditions.

                                                        AMPP/API ICP certification requirements typically include relevant industry experience and may require prior inspection or corrosion-related certifications depending on eligibility route. These rules are set by API and may change, so confirm the current requirements on the official exam page: https://www.ampp.org/certification/api-individual-certifications before registering for the API Corrosion and Materials Professional exam.

                                                        API Corrosion and Materials Professional Sample Questions:

                                                        The most effective means of preventing caustic stress corrosion cracking is:

                                                        • A. Controlling process temperature during steamouts
                                                        • B. Reducing caustic concentration
                                                        • C. Upgrading to 300 series stainless steel
                                                        • D. Postweld heat treatment
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

                                                        Which of the following is a critical factor for chloride stress corrosion cracking?

                                                        • A. Use in an alkaline pH region
                                                        • B. Presence of nickel content less than 8%
                                                        • C. Presence of oxygen
                                                        • D. Presence of nickel content higher than 35%
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: C  🗳️

                                                        Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

                                                        (A section of vacuum bottom outlet piping is being replaced because of naphthenic acid corrosion (NAC).
                                                        Which of the following potential replacement materials would be most resistant to NAC?)

                                                        • A. 321 stainless steel
                                                        • B. 9 Cr-1 Mo steel
                                                        • C. 317 stainless steel
                                                        • D. Titanium
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

                                                        Sulfidation of iron-based alloys usually:

                                                        • A. Occurs in equipment handling sour water
                                                        • B. Causes wet hydrogen sulfide cracking of hard welds
                                                        • C. Occurs at metal temperatures above 500°F (260°C)
                                                        • D. Occurs only when moisture contacts the surface scale
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: C  🗳️

                                                        Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

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

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

                                                        Correct Answer: C  🗳️

                                                        Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

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