Free demo, instant email delivery, three study formats, a year of free updates, and a refund policy with clear terms — Real4Prep wraps the entire API Corrosion and Materials Professional preparation into one purchase. Your part is simple: work through the 151 practice questions for the API-571 exam, current for 2026.
API API-571 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Damage Mechanisms | - High Temperature Corrosion (800°F / 425°C and above)
|
Your API Corrosion and Materials Professional Exam Questions Answered
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The passing mark for the API Corrosion and Materials Professional exam is Minimum passing score determined by API using the modified Angoff method (typically around 70%), and one attempt costs $900 USD (exam fee through API). Retakes are charged at full price again, so walking in underprepared is an expensive mistake. A practical safeguard: rehearse with Real4Prep practice questions until your timed mock scores clear Minimum passing score determined by API using the modified Angoff method (typically around 70%) with room to spare, then book the real API-571 exam.
API structures the API Corrosion and Materials Professional exam around 1 domains. The heaviest hitters are Damage Mechanisms, . Start your revision where the weight is, and scroll up to the outline section on this page for the complete topic list.
The API-571 exam is the official API assessment that awards the ICP Programs certification — a credential at the Professional level. Passing it proves vendor-validated skills that employers actively look for. It belongs to a broader track that includes API 510 Pressure Vessel Inspector, API 570 Piping Inspector, API 653 Aboveground Storage Tank Inspector, making it a solid anchor for further certifications.
Delivery first: your API-571 product downloads instantly, and a copy reaches your email within one minute of payment. Nothing after 2 hours (spam folder checked)? Contact our online service and we will resolve it at once. Install limits do not exist — use as many computers as you like. On refunds: if you sit the corresponding API-571 exam within 60 days of purchase and fail, you qualify for a full refund. File the claim within 2 days after the exam with a scanned enrollment slip and the official Score Report PDF; processing completes within 7 days. The guarantee excludes attempts made within 3 days of purchase, downloads never used in an actual exam, free materials, and expired orders, and the candidate name must match the payer name. Rather keep studying? Swap your product for two free exam products of equal value — your original purchase keeps its update service either way.
Expect 100 questions within 3.5 hours (210 minutes) on the API Corrosion and Materials Professional exam. Divide the two and the pace is unforgiving — there is little slack for second-guessing. Build speed deliberately: run full-length timed sessions in the Real4Prep test engine, practice marking hard questions for review, and treat every mock as a dress rehearsal for the real API-571 exam.
Candidates must hold a current API 510, 570, or 653 certification to automatically qualify. Otherwise, qualification is based on education and a minimum of 1-5 years of experience in the petrochemical industry acquired within the last 10 years. Because API can revise these requirements, verify the current rules on the official exam page — https://www.api.org/products-and-services/individual-certification-programs/certifications/api571 — before scheduling your API Corrosion and Materials Professional exam.
API Corrosion and Materials Professional Sample Questions:
To detect wet insulation that might give rise to corrosion under insulation, which nondestructive examination (NDE) technique would be most useful?
- A. Low-intensity X-ray imaging scope
- B. Spectroscopy
- C. Deep penetrating eddy current
- D. Neutron backscatter
Correct Answer: D 🗳️
Explanation: Only visible for Real4Prep members. You can sign-up / login (it's free).
Which of the following locations would be most susceptible to naphthenic acid corrosion (NAC)?
- A. Downstream from an injection point
- B. Deadlegs
- C. Under deposits
- D. Regions of high velocity and turbulence
Correct Answer: D 🗳️
Explanation: Only visible for Real4Prep members. You can sign-up / login (it's free).
Corrosion rates associated with hydrofluoric (HF) acid would be expected to increase if:
- A. HF acid concentration increases
- B. Copper-nickel alloy is used
- C. Temperature and water content increase
- D. Temperatures are below 150°F (66°C) and there is less than 3% water
Correct Answer: C 🗳️
Explanation: Only visible for Real4Prep members. You can sign-up / login (it's free).
An NPS 3/4 (DN 20) carbon steel unsupported high-point vent on a steam line has failed by cracking.
The most likely cause is:
- A. original weld defect.
- B. thermal overload.
- C. sulfide stress cracking.
- D. mechanical fatigue.
Correct Answer: D 🗳️
Explanation: Only visible for Real4Prep members. You can sign-up / login (it's free).
Which of the following can cause hydrogen embrittlement of carbon steel?
- A. High-temperature hydrogen attack (HTHA)
- B. Welding with wet electrodes
- C. Cleaning and pickling in caustic solutions
- D. Improper postweld heat treatment (PWHT)
Correct Answer: D 🗳️
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