Corrosion and Materials Professional: API-571 Exam

"Corrosion and Materials Professional", also known as API-571 exam, is a API Certification. With the complete collection of questions and answers, PrepPDF has assembled to take you through 151 Q&As to your API-571 Exam preparation. In the API-571 exam resources, you will cover every field and category in ICP Programs Certification helping to ready you for your successful API Certification.

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  • Exam Code: API-571
  • Exam Name: Corrosion and Materials Professional
  • Certification Provider: API
  • Corresponding Certification: ICP Programs
  • Updated: Nov 13, 2026
  • No. of Questions: 151 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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API-571 Exam Reference

Reference: http://www.api.org/products-and-services/individual-certification-programs/certifications/api571#tab_exam-info

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How to book the API-571 Exam

These are following steps for registering the API-571 exam. Step 1: Signup/Login to ICP Portal Step 2: Submit an application Step 3: After your application is approved, Select Date, time and confirm with payment method

What is the duration of the API-571 Exam

  • Length of Examination: 3.25 hours
  • Format: Multiple choices, multiple answers
  • Number of Questions: 70

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API API-571 Exam Syllabus Topics:

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

                                                        API Corrosion and Materials Professional Sample Questions:

                                                        300 series austenitic stainless steels susceptible to polythionic acid stress corrosion cracking (PTA SCC) can become sensitized when heated in the range of:

                                                        • A. 400°F to 675°F (204°C to 357°C)
                                                        • B. 1200°F to 1650°F (622°C to 900°C)
                                                        • C. 750°F to 1500°F (400°C to 815°C)
                                                        • D. 1650°F to 1725°F (899°C to 941°C)
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: C  🗳️

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                                                        At which of the following temperatures would the highest atmospheric corrosion rates be expected?

                                                        • A. 200°F (93°C)
                                                        • B. 175°F (79°C)
                                                        • C. 275°F (135°C)
                                                        • D. 250°F (120°C)
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: B  🗳️

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                                                        (Which of the following may be more susceptible to polythionic acid stress corrosion cracking?)

                                                        • A. Monel 400
                                                        • B. Type 321 stainless steel
                                                        • C. SA-516 Grade 70 carbon steel
                                                        • D. Type 304 stainless steel
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

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                                                        Convection section soot blowers that have steam supplies without a steam trap can cause:

                                                        • A. carbonic acid corrosion.
                                                        • B. CO2 corrosion.
                                                        • C. condensate corrosion.
                                                        • D. thermal fatigue.
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: C  🗳️

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                                                        The likelihood of brittle fracture is best lessened by:

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

                                                        Correct Answer: B  🗳️

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