API-571

API-571 practice questions, page 4 of 18, with answer review and explanations.

Question 16

Which of the following metals is the most anodic?

  1. Zinc
  2. Carbon Steel
  3. Nickel
  4. Monel

Question 17

Cracking of dissimilar weld metals occurs on the _________ side of a weld between an austenitic and a Ferritic material operating at high temperatures.

  1. Austenitic
  2. Ferritic
  3. Anodic
  4. Cathodic

Question 18

Soil to Air interface areas are usually more susceptible to corrosion than the rest of the structure because of ___________ and __________ availability.

  1. Moisture
  2. Bacteria
  3. Oxygen
  4. B and C
  5. A and C

Question 19

Carburization can be confirmed by substantial increases in _______ and loss of __________.

  1. Hardness
  2. Tensile Strength
  3. Ductility
  4. A and B
  5. A and C

Question 20

Liquid metal embrittlement can occur if 300 Series SS comes in contact with molten _______.

  1. Copper
  2. Mercury
  3. Zinc
  4. Lead