Free API-571 Exam Braindumps
Corrosion and Materials Professional Questions 231–235 (page: 48)

Updated On: 9-Feb-2026

In general, the resistance of carbon steel and other alloys to High temperature corrosion is determined by the ________ content of the material.

  1. Molybdenum
  2. Chromium
  3. Carbon
  4. All of the above

Answer(s): B



Susceptibility of an alloy to sulfidation is determined by its ability to form protective _________.

  1. Oxide scales
  2. Sulfide scales
  3. Carbide scales
  4. None of the above

Answer(s): B



With high temperature sulfide corrosion (Sulfidization), noticeable increases may be found downstream of _________ injection points.

  1. Hydrogen
  2. Caustic
  3. Ammonia
  4. Water

Answer(s): A



300 Series SS, 400 Series SS and duplex SS are subject to pitting and localized corrosion under insulation. In addition, __________ are also subject to SCC if chlorides are present, while _________ are less susceptible.

  1. Duplex SS, Low alloys
  2. 300 Series SS, Duplex SS
  3. Duplex SS, 300 Series Ss
  4. None of the above

Answer(s): B



Sulfide stress cracking (SSC) is defined as cracking of metal under the combined action of tensile stress and corrosion in the presence of _________ and _________.

  1. Sulfur, Oxide
  2. Hydrogen, water
  3. H²S, Oxygen
  4. Water, H²S

Answer(s): D



Viewing page 48 of 92
Viewing questions 236 - 240 out of 454 questions


Post your Comments and Discuss API API-571 exam prep with other Community members:

AI Tutor AI Tutor 👋 I’m here to help!