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Free API-577 Exam Braindumps (page: 14)

Page 13 of 29
PDF with 110 Questions

As a result of welding, metals with a high coefficient of thermal expansion are:

  1. More susceptible to distortion during welding.
  2. Less susceptible to cracking during welding.
  3. More susceptible to brittle fracture.
  4. Less susceptible to brittle fracture.

Answer(s): A



General awareness of metallurgy is important to the welding inspector because:

  1. Welding processes can affect both mechanical and corrosion properties of a weldment.
  2. The crystalline structure of base metals affects the resulting structure of the weld.
  3. Physical properties of the final weldment can be significantly affected by preheat and postweld heat treatment (PWHT).
  4. A thorough knowledge of weld metal structures is necessary to understand weldability.

Answer(s): A



For carbon steels, the HAZ includes those regions heated to a temperature greater than:

  1. 1050°F (556°C)
  2. 1150°F (621°C)
  3. 1250°F (677°C)
  4. 1350°F (730°C)

Answer(s): B



For GMAW welding, the last number of the electrode identifies the:

  1. Chemical composition.
  2. Strength of the electrode.
  3. Coating characteristics.
  4. Operating characteristics.

Answer(s): D






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