Exam Name: Corrosion and Materials Professional
Certification Provider: API
Corresponding Certification: ICP Programs
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Instant Download API : API-571
Check Updated on: Nov 06, 2026
No. of Questions: 151 Questions & Answers with Exam Engine
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What is the duration of the API-571 Exam
- Format: Multiple choices, multiple answers
- Number of Questions: 70
- Length of Examination: 3.25 hours
API API-571 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: High-Temperature Corrosion and Degradation | 15% | - Graphitization - Decarburization - Metal Dusting - Carburization |
| Topic 2: Other Damage Mechanisms | 15% | - Cavitation Damage - Erosion and Erosion-Corrosion - Liquid Metal Embrittlement - Microbiologically Influenced Corrosion |
| Topic 3: Terms, Definitions, and Acronyms | 5% | |
| Topic 4: Mechanical and Metallurgical Failure Mechanisms | 15% | - Creep and Stress Rupture - Brittle Fracture - Mechanical Fatigue - Thermal Fatigue |
| Topic 5: Uniform or Localized Loss of Thickness | 25% | - Sulfidation - Hydrochloric Acid Corrosion - Oxidation and Scaling - Corrosion Under Insulation (CUI) - Ammonium Bisulfide Corrosion |
| Topic 6: Environmentally Assisted Cracking | 25% | - Sulfide Stress Cracking - Chloride Stress Corrosion Cracking - Caustic Stress Corrosion Cracking - Hydrogen Embrittlement |
API Corrosion and Materials Professional Sample Questions:
The best method for finding damage from sigma phase embrittlement is:
- A. Hardness testing
- B. Ductility testing
- C. Metallographic testing
- D. Magnetic particle testing
Correct Answer: C 🗳️
Explanation: Only visible for PrepPDF members. You can sign-up / login (it's free).
(Corrosion fatigue can be distinguished from stress corrosion cracking because the fatigue:)
- A. Cracks exhibit little or no branching
- B. Failure is highly dependent upon the fatigue load limit
- C. Failure occurs only in low-alloy steels
- D. Mechanism is unrelated to environmental conditions
Correct Answer: A 🗳️
Explanation: Only visible for PrepPDF members. You can sign-up / login (it's free).
(Which three residual alloy elements are of most concern when it comes to corrosion of carbon steel in HF Alkylation process units?)
- A. C / Nb / V
- B. Cr / Mo / Ni
- C. Cu / S / V
- D. Cr / Cu / Ni
Correct Answer: D 🗳️
Explanation: Only visible for PrepPDF members. You can sign-up / login (it's free).
(Which of the following is the appropriate method for monitoring hydrochloric acid corrosion susceptibility in an atmospheric crude unit?)
- A. Measuring the pH of the water in the boot of the overhead accumulator
- B. Manual or automatic ultrasonic scanning or profile radiographing of piping, vessels, and exchangers in the system
- C. Using strategically placed corrosion probes or corrosion coupons
- D. Ultrasonic thickness measurements of water injection points
Correct Answer: A 🗳️
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Which of the following is considered resistant to cracking in hydrofluoric acid service?
- A. ASTM A-325
- B. ASTM A-193 B7
- C. ASTM A-193 B5
- D. ASTM A-193 B7M
Correct Answer: C 🗳️
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