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Instant Download API : API-571 Questions & Answers as PDF & Test Engine

API-571
  • Exam Code: API-571
  • Exam Name: Corrosion and Materials Professional
  • Updated: Nov 03, 2026
  • No. of Questions: 151 Questions and Answers
  • Download Limit: Unlimited
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Smooth preparation needs current material. Lead2Passed always checks the updating of the API Corrosion and Materials Professional set — 151 practice questions for the API-571 exam, accurate through 2026.

API API-571 Exam Syllabus Topics:

SectionObjectives
Topic 1: Corrosion Mechanisms- Aqueous corrosion
  • 1. Crevice corrosion
    • 2. Galvanic corrosion
      • 3. Pitting corrosion
        • 4. Uniform corrosion
          • 5. Microbiologically influenced corrosion (MIC)
            - High-temperature corrosion
            • 1. Oxidation
              • 2. Carburization
                • 3. Sulfidation
                  Topic 2: Materials Selection and Mitigation- Corrosion control strategies
                  • 1. Material selection principles
                    • 2. Coatings and linings
                      • 3. Corrosion inhibitors
                        Topic 3: 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 4: Metallurgical Damage Mechanisms- High-temperature degradation
                                • 1. Creep damage
                                  • 2. Graphitization
                                    • 3. Thermal fatigue
                                      - Embrittlement phenomena
                                      • 1. Sigma phase embrittlement
                                        • 2. Temper embrittlement
                                          Topic 5: General Knowledge of Damage Mechanisms- Overview of degradation in refining environments
                                          • 1. Damage mechanism classification
                                            • 2. Materials performance fundamentals
                                              Topic 6: 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

                                                        API API-571 Exam: FAQ for Busy Professionals

                                                        Yes — download the free API Corrosion and Materials Professional demo and inspect the material before buying. Purchases include the right of free updating for 365 days, with latest versions emailed promptly upon release; renew afterward at 50% off.

                                                        The API Corrosion and Materials Professional blueprint covers 6 domains — including Metallurgical Damage Mechanisms, General Knowledge of Damage Mechanisms, Refining Process-Specific Damage. Budget your limited hours by weighting; the complete outline above lists every subtopic.

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                                                        The API Corrosion and Materials Professional is delivered Computer-based exam delivered via authorized testing centers (e.g., Pearson VUE) — pick the arrangement that fits your calendar when booking.

                                                        The API Corrosion and Materials Professional is API's certification exam for API 571 Corrosion and Materials Professional, at the Professional level. It's among the most authoritative credentials in the field — for those aiming at API careers, it's the first step. Related credentials include API 510, API 570, API 653, API 580, API 936.

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                                                        AMPP/API ICP certification requirements typically include relevant industry experience and may require prior inspection or corrosion-related certifications depending on eligibility route. Vendors update eligibility rules over time, so verify the current requirements on the official page (official API-571 exam page) before registering.

                                                        Yes:

                                                        Official training teaches; practice proves. After any course, review with the 151 practice questions for the API Corrosion and Materials Professional — answers expert-verified.

                                                        API Corrosion and Materials Professional Sample Questions:

                                                        (Graphitization occurs in:)

                                                        • A. Stainless steel
                                                        • B. Aluminum
                                                        • C. Carbon steel
                                                        • D. Monel
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: C  🗳️

                                                        Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).

                                                        In most cases, brittle fracture occurs only at:

                                                        • A. High temperatures in areas of high stress concentration
                                                        • B. Temperatures below ambient in thick sections
                                                        • C. Temperatures above the Charpy impact transition temperature
                                                        • D. Temperatures below the Charpy impact transition temperature
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

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                                                        Proactive and retroactive positive material identification programs are especially useful for services exposed to:

                                                        • A. Caustic embrittlement
                                                        • B. Ammonia stress corrosion cracking
                                                        • C. Sour water
                                                        • D. Sulfidation
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).

                                                        Which type of corrosion is most likely to occur in hydroprocess reactor effluent streams in units producing alkaline sour water?

                                                        • A. Caustic
                                                        • B. Amine
                                                        • C. Ammonium chloride
                                                        • D. Ammonium bisulfide
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).

                                                        (Which of the following is the most important factor in determining carbon steel susceptibility to ethanol stress corrosion cracking in storage tanks?)

                                                        • A. Moisture content
                                                        • B. Amount of aeration
                                                        • C. Grade of steel
                                                        • D. Ethanol percentage
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: A  🗳️

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