The API Corrosion and Materials Professional exam contains 100 to complete within 3.5 hours (210 minutes). Timed simulation in the ExamPrepAway Desktop Test Engine teaches that rhythm before exam day does.

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 official API Corrosion and Materials Professional outline defines 1 domains. The leading three are Damage Mechanisms. The full list is in the topics section above, and ExamPrepAway's 151 practice questions cover each one.

The API Corrosion and Materials Professional exam requires Minimum passing score determined by API using the modified Angoff method (typically around 70%) to pass, and registration costs $900 USD (exam fee through API). A failed attempt means paying the same fee again — a readiness check with the ExamPrepAway 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 keep up with it using ExamPrepAway'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.

ExamPrepAway 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.

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. Since requirements change over time, confirm the latest on the official API exam page before scheduling.

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 ExamPrepAway help you apply theory and fill any gaps the training leaves.

Computer-Based Testing (CBT) at PSI test centers Register for the API Corrosion and Materials Professional exam through these official channels:

After booking, ExamPrepAway delivers your practice questions within 1 minute — preparation starts the same day.