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Free API-571 Exam Braindumps (page: 35)

Page 34 of 114
PDF with 454 Questions

Non-stressed relieved __________ is susceptible to stress corrosion cracking when in contact with moist HF vapors in the presence of oxygen.

  1. Carbon steel
  2. Alloy 400
  3. 300 Series SS
  4. 400 Series SS

Answer(s): B



Higher __________ containing alloys are used for improved resistance to naphthenic acid corrosion.

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

Answer(s): C



Which material below is not susceptible to caustic corrosion?

  1. Carbon steel
  2. 400 Series SS
  3. 300 Series SS
  4. Low alloy steel

Answer(s): B



If weld repairs are required, the effects of temper embrittlement can be temporarily reversed (de- embrittled) by heating at ______ for 2 hours per inch of thickness and rapidly cooling to room temperature.

  1. 1000º F
  2. 1150º F
  3. 1200º F
  4. 1250º F

Answer(s): B






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