Free API-571 Exam Braindumps
Corrosion and Materials Professional Questions 226–230 (page: 47)

Updated On: 9-Feb-2026

In general, the resistance of iron and nickel based alloys to sulfidation is determined by the ________ content of the material.

  1. Chromium
  2. Carbon
  3. Molybdenum
  4. Alloying

Answer(s): A



SSC is a form of hydrogen stress cracking resulting from the absorption of ________ that is produced by the sulfide corrosion process on the metal surface.

  1. Sulfur dioxide
  2. Hydrogen sulfide
  3. Atomic hydrogen
  4. Hydrogen chloride

Answer(s): C



For galvanic corrosion to take place, three conditions must be met, presence of an electrolyte, two different materials or alloys and ___________.

  1. A cathode
  2. An anode
  3. An electrical connection
  4. None of the above

Answer(s): C



The signature mark of a fatigue failure is a _______ type fingerprint that has concentric rings.

  1. Eyebrow
  2. Half-Moon
  3. Radii
  4. Clam Shell

Answer(s): D



With creep, increased stress due to loss in thickness from corrosion will ________ time to failure.

  1. Increase
  2. Reduce
  3. Not affect
  4. None of the above

Answer(s): B



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