Corrosion and Materials Professional: API-571 Exam

"Corrosion and Materials Professional", also known as API-571 exam, is a API Certification. With the complete collection of questions and answers, PrepPDF has assembled to take you through 151 Q&As to your API-571 Exam preparation. In the API-571 exam resources, you will cover every field and category in ICP Programs Certification helping to ready you for your successful API Certification.

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  • Exam Code: API-571
  • Exam Name: Corrosion and Materials Professional
  • Certification Provider: API
  • Corresponding Certification: ICP Programs
  • Updated: Oct 17, 2026
  • No. of Questions: 151 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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API Corrosion and Materials API-571 Exam

API Corrosion and Materials API-571 Exam is related to Advanced Corrosion & Materials Professional Certifications. This exam validates the knowledge and skills of corrosion engineers, corrosion processes among specialized inspectors, chemical engineers and other professionals across the entire petrochemical industry. Highly Specialized Inspectors, Corrosion Engineers and Chemical Engineers usually hold or pursue this certification and you can expect the same job role after completion of this certification.

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Certification Path

The API Corrosion and Materials certification path includes only one API-571 certification exam.

Reference: http://www.api.org/products-and-services/individual-certification-programs/certifications/api571#tab_exam-info

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API API-571 Exam Syllabus Topics:

SectionWeightObjectives
Uniform or Localized Loss of Thickness25%- Sulfidation
- Hydrochloric Acid Corrosion
- Corrosion Under Insulation (CUI)
- Ammonium Bisulfide Corrosion
- Oxidation and Scaling
High-Temperature Corrosion and Degradation15%- Carburization
- Graphitization
- Decarburization
- Metal Dusting
Other Damage Mechanisms15%- Cavitation Damage
- Liquid Metal Embrittlement
- Erosion and Erosion-Corrosion
- Microbiologically Influenced Corrosion
Terms, Definitions, and Acronyms5%
Mechanical and Metallurgical Failure Mechanisms15%- Thermal Fatigue
- Mechanical Fatigue
- Brittle Fracture
- Creep and Stress Rupture
Environmentally Assisted Cracking25%- Chloride Stress Corrosion Cracking
- Hydrogen Embrittlement
- Sulfide Stress Cracking
- Caustic Stress Corrosion Cracking

API Corrosion and Materials Professional Sample Questions:

(Typically, surface decarburization will have what effect on steel components in high temperature service?)

  • A. Normally no detrimental effect
  • B. Accelerate stress cracking potential
  • C. Accelerate oxidation and sulfidation corrosion
  • D. Cause failure by lowering strength
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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(What is the minimum pH value where chloride stress corrosion cracking begins to occur?)

  • A. 4
  • B. 7
  • C. 10
  • D. 2
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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Steel hardness and strength are critical factors for what type of damage mechanism?

  • A. Carbonate corrosion stress cracking
  • B. Hydrogen stress cracking-HF
  • C. Polythionic acid cracking
  • D. Amine stress corrosion cracking
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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(Which of the following is the most important factor in determining carbon steel susceptibility to ethanol stress corrosion cracking in storage tanks?)

  • A. Grade of steel
  • B. Amount of aeration
  • C. Moisture content
  • D. Ethanol percentage
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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Short-term stress rupture is a/an:

  • A. failure caused by repeated cycling from elevated temperature, typically characterized by through-wall oxide filled ruptures with little bulging.
  • B. elevated temperature failure caused by diffusion of hydrogen into the material, typically characterized by blistering and cracking.
  • C. cracking failure caused by sulfides formed at elevated temperature that convert to acids on exposure to moisture and oxygen.
  • D. elevated temperature failure caused by localized overheating, typically characterized by bulging and thinning.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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