The API Corrosion and Materials Professional exam is the official API assessment behind the Corrosion and Materials Professional credential, which sits at the Professional level. Passing it confirms that your skills meet the vendor's current requirements rather than a textbook outline. It also connects with related certifications such as API 510 Pressure Vessel Inspector, API 570 Piping Inspector, API 653 Aboveground Storage Tank Inspector, so it can anchor a broader certification path.

According to the official exam information, the API Corrosion and Materials Professional exam includes 110 (100 scored, 10 unscored pretest) questions and gives you 195 minutes to complete them. Treat that as a pacing exercise, not just a knowledge check: bank the questions you know first, flag the ones that stall you, and circle back instead of burning minutes on a single item. Before test day, run at least one full timed session in the Lead1Pass desktop or online test engine, so the clock never feels unfamiliar when it counts.

To pass the API Corrosion and Materials Professional exam you need 70% / Scaled score determined by API, and the official registration fee is $440 USD. Keep one thing in mind: a failed attempt is not discounted, so retaking the exam means paying $440 USD again in full. A practical safeguard is to sit a complete Lead1Pass practice test a week or two before your exam date; if your timed scores are not sitting comfortably above the passing mark, consider pushing your booking back and drilling the weak domains first.

The official prerequisites for the API Corrosion and Materials Professional exam are as follows: 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). Requirements can change over time, so confirm the details on the official API exam page at https://www.api.org/products-and-services/individual-certification-programs/certifications/api571 before you book your seat.

You can register through the official channels listed below:

• API ICP Portal
• Prometric Scheduling

Exam delivery: Computer-based testing (CBT) at Prometric test centers; online proctored option available.

API points candidates toward the following official training options:

• API RP 571 Damage Mechanisms Standard

Official training builds the theory; the 151 practice questions from Lead1Pass show you how that theory appears in exam-style items, which is where most study plans actually pay off.

Yes. A free PDF demo of the API Corrosion and Materials Professional practice questions is available on the Lead1Pass samples page, so you can check the question style and difficulty before spending anything. Every purchase also includes 365 days of free updates, and if your product expires after that period, you can extend the update service from your member zone at 50% off.

If you take the API-571 exam within 60 days of your purchase and do not pass, Lead1Pass offers a 100% money-back guarantee: send a scanned copy of your exam enrollment slip together with the official Score Report PDF within two days of your exam date, and the refund is processed within seven days. The candidate name must match the payer name, and the guarantee does not apply to exams taken within three days of purchase, to material that was downloaded without the exam actually being taken, or to free materials and expired orders. Prefer to keep studying instead? You can exchange your purchase for two additional exam products of equal value, free of charge, while keeping the update service on your original product. Delivery itself is instant: the download link is emailed within one minute of payment, and if nothing arrives within two hours, our support team will sort it out. There is no limit on how many computers you install the material on.

The API Corrosion and Materials Professional syllabus is organized into 6 domains. The leading areas include Terms, Definitions, and Acronyms (5%), Other Damage Mechanisms (15%), and Environmentally Assisted Cracking (25%). For the complete, topic-by-topic breakdown, scroll up to the Exam Topics section above.