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API API-577 Exam Questions
Welding Inspection and Metallurgy (Page 3 )

Updated On: 21-Feb-2026
Page 3 of 23
PDF with 110 Questions

Hardenability of a steel can be an indirect indicator of:

  1. Weldability
  2. Toughness
  3. Strength
  4. Cooling rate

Answer(s): A



The most common measure of weldability and susceptibility to hot cracking of austenitic stainless steels is the ferrite content of the weld metal.
Which of the following ranges is the recommended minimum ferrite content of the weld metal needed to prevent cracking?

  1. 1%-10%
  2. 5%-20%
  3. 8%-18%
  4. 15%-20%

Answer(s): C



For what maximum outside diameter may a radiographic technique be used in which the radiation passes through two walls and the weld in both walls is viewed for acceptance?

  1. 1.5 in. (38.0 mm)
  2. 2.5 in. (63.5 mm)
  3. 3 in. (76.2 mm)
  4. 3.5 in. (90.0 mm)

Answer(s): C



In hardness testing of carbon steel weldment specimens, there is an approximate relationship between hardness and:

  1. Toughness
  2. Tensile strength
  3. Ductility
  4. Yield strength

Answer(s): B



When welding nickel alloys, it is important that:

  1. The bevel angle be wide enough to allow oscillation of welding torch.
  2. The cooling rate be controlled in order to prevent rapid cooling.
  3. Preheating is always performed to prevent hot cracking.
  4. A wide face and thinner bevel be used.

Answer(s): B






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