Free API API-577 Exam Questions

Become API Certified with updated API-577 exam questions and correct answers

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Total 112 Questions | Updated On: Aug 20, 2026

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Question 1

When verifying that the filler metal selection is appropriate for the base metal being welded, an inspector should consider:

A : Chemical composition.

B : Tensile strength to be higher than the base metal.

C : Acceptability of physical properties.

D : Need for postweld heat treatment (PWHT).

Answer: A

Question 2

To reduce exposure to moisture of low-hydrogen electrodes after they have been removed from the manufacturers packaging, they should be stored:

A : Under low humidity conditions.

B : In warm holding ovens.

C : In sealed plastic containers.

D : In tightly sealed ovens.

Answer: B

Question 3

One of the main differences between welding nickel alloys and austenitic stainless steels is that with nickel alloys:

A : Interpass temperature control is not needed.

B : There is less susceptibility to cracking from contaminants.

C : There is less susceptibility to lack of fusion.

D : The weld pool tends to be sluggish.

Answer: D

Question 4

A-number groupings are based upon the:

A : Chemical composition of the deposited weld metal.

B : Comparable base metal ultimate strength values.

C : Weldability characteristics of the metal.

D : Type and strength of base metal.

Answer: A

Question 5

To reduce the possibility of cracking, which of the following maximum hardness levels is required for weldments in wet H2S service?

A : HRC 20

B : HRC 22

C : HRC 25

D : HRC 32

Answer: B

Page: 1 / 23

Total 112 Questions | Updated On: Aug 20, 2026

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