Free API-571 Exam Braindumps (page: 18)

Page 17 of 114

Steel hardness, __________ and stress are critical factors in causing hydrogen stress cracking.

  1. Temperature
  2. Alloy composition
  3. Strength
  4. None of the above

Answer(s): C



If the BHN is 400-500 it may indicate __________.

  1. Carburization
  2. Hydriding
  3. Temper embrittlement
  4. Caustic embrittlement

Answer(s): B



The graphitization rate ____________ with increasing temperature

  1. Increases
  2. Decreases
  3. Stops
  4. Proceeds

Answer(s): A



The level of creep damage is a function of the material and the coincident _________ level at which the creep deformation occurs.

  1. Pressure/Temperature
  2. Pressure/Stress
  3. Temperature/Stress
  4. None of the above

Answer(s): C






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