API-580 Exam - Topic 3 Question 124 Discussion

Actual exam question for API's API-580 exam

Question #: 124
Topic #: 3

[All API-580 Questions]

_________________curves are referred for the deterioration mechanism for carbon and low ally steel materials.

ANelson curves

BPh concentration curves

CSchmidt curves for sulfide corrosion

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Suggested Answer: A

by Myra at May 04, 2026, 05:04 AM

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13 days ago

I’m leaning towards option A, Nelson curves, but I vaguely remember something about Ph concentration curves too.

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19 days ago

I feel like I've seen a question about Schmidt curves before, but I can't recall if they specifically apply to carbon steel.

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24 days ago

I think I remember something about Nelson curves being related to corrosion, but I'm not entirely sure if that's the right answer here.

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