How many API-571 practice questions are there?

65 questions across 1 version, each with the correct answer and an explanation.

Are there free API-571 sample questions?

Yes. 12 sample questions are free; 6 are open to everyone and the rest unlock with a free account.

What does full access include?

Every API-571 question in study, timed and flashcard modes, explanations for each answer, and progress that saves so you can resume.

What topics does API-571 cover?

Mechanical and Metallurgical Failure Mechanisms, Uniform or Localized Loss of Thickness, High Temperature Corrosion (>400°F/204°C), Environment-Assisted Cracking, Other Mechanisms.

How much does the API-571 exam cost?

The API-571 exam fee is $575 (USD; local pricing varies by region and provider).

What is the passing score for API-571?

You need 70% (scaled score) to pass API-571.

How long is the API-571 certification valid?

3 years. Recertification: Pass recertification exam within 90 days before expiration; 90-day grace period available after expiration.

API-571Corrosion and Materials practice test

65 American Petroleum Institute API-571 practice questions with explanations, in study, timed and flashcard modes. 12 samples are free.

Full access

$69.99

All 65 questions with explanations · Study, timed and flashcard modes · Progress saved, resume any time

Try the free samples first

Questions: 65
Free samples: 12
Versions: 1
Updated: Aug 2025

Practice API-571 in the simulator.

Study, timed and flashcard modes. Answers and explanations as you go, and your progress saves.

Open the simulator Try the free samples

API-571, by the numbers.

Official specifications published by American Petroleum Institute.

Duration: 195 min
Questions: 110
Passing score: 70% (scaled score)
Exam fee: $575
In the bank: v1 (65)

Open the full exam guide

Everything about API-571.

API-571 · American Petroleum Institute · 3rd Edition (2020)

Exam information

Official specifications published by American Petroleum Institute, plus what is in our question bank.

Duration: 195 min
Questions: 110
Passing score: 70% (scaled score)
Level: Professional

Three ways to practise

Study mode

Work through the bank at your own pace with the answer and explanation one tap away. Flag questions, add notes, bookmark the hard ones.

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Timed mode

A shuffled deck with a countdown that mirrors the real exam. Your score is saved to your attempt history.

Open in the simulator

Flashcards

Question on the front, answer on the back. Good for the last week before the exam.

Open in the simulator

API-571Corrosion and Materials practice test

Full access

Practice API-571 in the simulator.

API-571, by the numbers.