API Corrosion and Materials Professional is an official American Petroleum Institute (API) certification exam, registered under the code API-571. Passing it earns the Corrosion and Materials Professional certification, positioned at the Professional level. It also connects to API 510 Pressure Vessel Inspector, API 570 Piping Inspector, API 653 Aboveground Storage Tank Inspector. Professional work increasingly demands professional proof, and this exam supplies exactly that.

The API Corrosion and Materials Professional exam contains 110 (100 scored, 10 unscored pretest) questions to be answered within 195 minutes. The candidates who struggle most are rarely the least knowledgeable; they are the least rehearsed at time allocation. Practice full timed sessions in the Exams4sures engine, learn to flag and move on, and the official clock becomes a familiar companion instead of a threat.

API Corrosion and Materials Professional requires 70% / Scaled score determined by API to pass, and official registration costs $440 USD. Since a retake bills the full $440 USD again, confirming readiness first is simply good economics. Run repeated scored sessions with the Exams4sures practice tests and schedule the exam once the passing line sits comfortably below your typical result.

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)

Vendor policies do change, so verify the current requirements before you register via the official exam page.

Sign-up for API Corrosion and Materials Professional is handled through the official channels below.

• API ICP Portal
• Prometric Scheduling

For your planning: the exam is delivered Computer-based testing (CBT) at Prometric test centers; online proctored option available.

American Petroleum Institute (API) recommends the following training for API Corrosion and Materials Professional candidates.

• API RP 571 Damage Mechanisms Standard

Round out any training with the 151 practice questions in the Exams4sures API-571 package, because applied repetition is what turns coursework into a passing score.

Yes. Exams4sures offers a free demo of the API Corrosion and Materials Professional questions as part of its pre-sale service, so you can evaluate quality before choosing among the three versions. After purchase, updates are free for 365 days, and when your product expires you can extend the update service at a 50% discount.

A 100% money-back guarantee protects your purchase under clear conditions. Take the API Corrosion and Materials Professional exam within 60 days of purchase; if you fail, you may claim a full refund, provided the exam matches your product. Attempts within 3 days of purchase are ineligible, as are downloaded-but-unused products, free materials, and expired orders; the candidate name must match the payer name. Submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are processed within 7 days. You may also choose an exchange: two other exam products of equal value, free, with the update service on your original purchase kept.

Delivery is instant: files unlock for download at payment and are emailed within one minute. If nothing arrives within 2 hours, check spam and contact customer service, available 24 hours. Installation is unlimited across your computers.

API Corrosion and Materials Professional covers 6 official domains. The largest include Environmentally Assisted Cracking (25%), Uniform or Localized Loss of Thickness (25%), and Terms, Definitions, and Acronyms (5%). The full breakdown is in the topics section above; review it first and your study plan practically writes itself.