API Exam API-571 Topic 1 Question 59 Discussion

Actual exam question for API's API-571 exam

Question #: 59
Topic #: 1

A hard, brittle surface layer will develop on some alloys due to exposure to high temperature process streams containing high levels of nitrogen compounds such as ammonia or cyanides, particularly under reducing conditions, is called _______.

ACarburization

BSpheroidization

CNitriding

DNone of the above

Show Suggested Answer

Suggested Answer: B

by Lonna at Oct 26, 2022, 02:17 PM

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Yolando

4 days ago

I'm not sure, but I think it could also be A) Carburization because it involves a hard surface layer.

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Cassi

5 days ago

I agree with Herminia, Nitriding makes sense because it involves exposure to nitrogen compounds.

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Herminia

7 days ago

I think the answer is C) Nitriding.

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