Exam Name: Corrosion and Materials Professional
Certification Provider: API
Corresponding Certification: ICP Programs
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- Total Questions: 151
- Updated on: Nov 04, 2026
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- Total Questions: 151
- Updated on: Nov 04, 2026
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- Total Questions: 151
- Updated on: Nov 04, 2026
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API API-571 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Environmentally Assisted Cracking | 25% | - Hydrogen Embrittlement - Chloride Stress Corrosion Cracking - Caustic Stress Corrosion Cracking - Sulfide Stress Cracking |
| Topic 2: Uniform or Localized Loss of Thickness | 25% | - Oxidation and Scaling - Ammonium Bisulfide Corrosion - Hydrochloric Acid Corrosion - Sulfidation - Corrosion Under Insulation (CUI) |
| Topic 3: Other Damage Mechanisms | 15% | - Liquid Metal Embrittlement - Microbiologically Influenced Corrosion - Cavitation Damage - Erosion and Erosion-Corrosion |
| Topic 4: High-Temperature Corrosion and Degradation | 15% | - Decarburization - Carburization - Graphitization - Metal Dusting |
| Topic 5: Terms, Definitions, and Acronyms | 5% | |
| Topic 6: Mechanical and Metallurgical Failure Mechanisms | 15% | - Creep and Stress Rupture - Mechanical Fatigue - Thermal Fatigue - Brittle Fracture |
API-571 Exam FAQ — Install Anywhere, Learn Everywhere
Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 151 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.
The API Corrosion and Materials Professional exam requires 70% / Scaled score determined by API to pass, and registration costs $440 USD. A failed attempt means paying the same fee again — a readiness check with the Actual4dump engines before booking is the cheaper option.
The API-571 exam is a API certification exam validating the API Corrosion and Materials Professional syllabus shown above. It belongs to these credential paths: API 510 Pressure Vessel Inspector, API 570 Piping Inspector, API 653 Aboveground Storage Tank Inspector. Candidates in 2026 start with Actual4dump's 151 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
Actual4dump issues a full refund if you take the API Corrosion and Materials Professional exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
The official API Corrosion and Materials Professional outline defines 6 domains. The leading three are High-Temperature Corrosion and Degradation (15%), Terms, Definitions, and Acronyms (5%), and Environmentally Assisted Cracking (25%). The full list is in the topics section above, and Actual4dump's 151 practice questions cover each one.
Hold current API 510, 570 or 653 certification; or meet education + experience requirements: BS/BS in engineering/tech + 1 year, 2-year degree + 2 years, high school + 3 years industry experience (past 10 years) Since requirements change over time, confirm the latest on the official API exam page before scheduling.
The API Corrosion and Materials Professional exam contains 110 (100 scored, 10 unscored pretest) to complete within 195 minutes. Timed simulation in the Actual4dump Desktop Test Engine teaches that rhythm before exam day does.
API recommends these training resources for the API Corrosion and Materials Professional exam:
Follow the training with steady self-testing — the 151 practice questions from Actual4dump help you apply theory and fill any gaps the training leaves.
Computer-based testing (CBT) at Prometric test centers; online proctored option available Register for the API Corrosion and Materials Professional exam through these official channels:
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API Corrosion and Materials Professional Sample Questions:
(Which of the following can be used to confirm 885 °F (475 °C) embrittlement?)
- A. Metallographic testing
- B. Magnetic particle testing
- C. Ductility testing
- D. Bend or impact testing
Correct Answer: D 🗳️
Explanation: Only visible for Actual4dump 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. Ethanol percentage
- B. Amount of aeration
- C. Grade of steel
- D. Moisture content
Correct Answer: D 🗳️
Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).
(Deaerators that have not been postweld heat-treated are commonly subject to:)
- A. Vibration-induced fatigue
- B. Steam blanketing
- C. Corrosion fatigue
- D. Caustic stress corrosion cracking
Correct Answer: D 🗳️
Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).
Which of the following is a critical factor for chloride stress corrosion cracking?
- A. Presence of nickel content higher than 35%
- B. Presence of oxygen
- C. Use in an alkaline pH region
- D. Presence of nickel content less than 8%
Correct Answer: B 🗳️
Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).
Proactive and retroactive positive material identification programs are especially useful for services exposed to:
- A. Caustic embrittlement
- B. Ammonia stress corrosion cracking
- C. Sulfidation
- D. Sour water
Correct Answer: C 🗳️
Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).
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