- Exam Code: API-571
- Exam Name: Corrosion and Materials Professional
- Certification Provider: API
- Corresponding Certification:ICP Programs
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Check Updated on: Oct 21, 2026
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API Corrosion and Materials API-571 Exam
API Corrosion and Materials API-571 Exam is related to Advanced Corrosion & Materials Professional Certifications. This exam validates the knowledge and skills of corrosion engineers, corrosion processes among specialized inspectors, chemical engineers and other professionals across the entire petrochemical industry. Highly Specialized Inspectors, Corrosion Engineers and Chemical Engineers usually hold or pursue this certification and you can expect the same job role after completion of this certification.
What is the duration of the API-571 Exam
- Format: Multiple choices, multiple answers
- Length of Examination: 3.25 hours
- Number of Questions: 70
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
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API API-571 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Uniform or Localized Loss of Thickness | 25% | - Oxidation and Scaling - Ammonium Bisulfide Corrosion - Sulfidation - Corrosion Under Insulation (CUI) - Hydrochloric Acid Corrosion |
| Topic 2: High-Temperature Corrosion and Degradation | 15% | - Graphitization - Metal Dusting - Decarburization - Carburization |
| Topic 3: Other Damage Mechanisms | 15% | - Cavitation Damage - Liquid Metal Embrittlement - Microbiologically Influenced Corrosion - Erosion and Erosion-Corrosion |
| Topic 4: Terms, Definitions, and Acronyms | 5% | |
| Topic 5: Environmentally Assisted Cracking | 25% | - Hydrogen Embrittlement - Chloride Stress Corrosion Cracking - Caustic Stress Corrosion Cracking - Sulfide Stress Cracking |
| Topic 6: Mechanical and Metallurgical Failure Mechanisms | 15% | - Brittle Fracture - Thermal Fatigue - Creep and Stress Rupture - Mechanical Fatigue |
API Corrosion and Materials Professional Sample Questions:
The rate of spheroidization is affected by:
- A. type of steel and H# partial pressure.
- B. exposure time and stress.
- C. temperature and microstructure.
- D. temperature and pressure.
Correct Answer: C 🗳️
Explanation: Only visible for ITPassLeader members. You can sign-up / login (it's free).
If thermal shock damage may be present, which of the following should be checked?
- A. Surface exfoliation of furnace tubes
- B. Hot/cold injection points
- C. Hardness of the furnace outlet piping
- D. Bulging at elbows
Correct Answer: B 🗳️
Explanation: Only visible for ITPassLeader members. You can sign-up / login (it's free).
Which of the following is a contributing factor in caustic corrosion?
- A. Heat traced equipment
- B. Iron oxide concentration
- C. Boiler feed water hardness
- D. Alkalinity of superheated steam
Correct Answer: A 🗳️
Explanation: Only visible for ITPassLeader members. You can sign-up / login (it's free).
(What nondestructive examination (NDE) technique requires the least amount of surface preparation to locate wet H#S damage mechanisms?)
- A. ACFM
- B. SWUT
- C. WFMT
- D. LPT
Correct Answer: B 🗳️
Explanation: Only visible for ITPassLeader members. You can sign-up / login (it's free).
Which of the following statements is most accurate with regard to thermal fatigue?
- A. Thermal fatigue cracks generally initiate on the interior of a component due to high thermal stress
- B. Controlled rates of heating and cooling during startup and shutdown can lower stresses
- C. Visual examination is an ineffective method of monitoring thermal fatigue
- D. Because of their ductility, carbon steels have lower resistance to thermal fatigue
Correct Answer: B 🗳️
Explanation: Only visible for ITPassLeader members. You can sign-up / login (it's free).
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