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Free API-571 Exam Braindumps (page: 29)

Page 28 of 114
PDF with 454 Questions

Which of the following materials is not susceptible to SCC?

  1. Carbon steel
  2. 300 Series SS
  3. Low alloy steel
  4. Both A and C

Answer(s): D



Graphitization can be prevented by using chromium containing low alloys steels for long-term exposure above ________.

  1. 650º F
  2. 700º F
  3. 750º F
  4. 800º F

Answer(s): D



Welds joining dissimilar materials (ferritic and austenetic) may suffer __________ related damage at high temperatures due to differential thermal expansion stresses.

  1. Stress
  2. Creep
  3. Fatigue
  4. Thermal stress

Answer(s): B



Carbon steel and low alloy steels are subject to excessive hydrochloric acid corrosion when exposed to any concentration of HCl acid that produces a pH below______.

  1. 6.0
  2. 5.5
  3. 5.0
  4. 4.5

Answer(s): D






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