API-571

Review 454 API-571 practice questions with answer explanations and community insights.

Question 1

__________ is a change in the microstructure of certain carbon steels and 0.5 Mo steels after long term operation in the 800º F to 1100º F range.

  1. Graphitization
  2. Softening
  3. Temper Embrittlement
  4. Creep

Question 2

What structure is 304 stainless steel?

  1. Martensitic
  2. Austenitic
  3. Duplex
  4. Ferritic

Question 3

_________ is the result of cyclic stress caused by variations in temperature.

  1. Creep
  2. Thermal Fatigue
  3. Cyclic Cracking
  4. Stress Corrosion Cracking

Question 4

General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________.

  1. Flue Gas Corrosion
  2. Atmospheric Corrosion
  3. Cooling Water Corrosion
  4. None of the Above
  5. All of the Above

Question 5

What structure is 410 stainless steel?

  1. Martensitic
  2. Austenitic
  3. Duplex
  4. Ferritic
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