API-577 Exam - Topic 1 Question 23 Discussion

Actual exam question for API's API-577 exam

Question #: 23
Topic #: 1

[All API-577 Questions]

The carbon equivalent formula indicates:

AWhether postweld heat treatment (PWHT) will be needed.

BWhether preheat will be needed.

CThe theoretical carbon content of a steel.

DThe weldability of a steel, based on carbon content.

Show Suggested Answer

Suggested Answer: D

by Leonida at Mar 31, 2026, 09:22 PM

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10 hours ago

I practiced a similar question, and I think the carbon equivalent helps determine if PWHT is necessary, which makes me consider option A.

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6 days ago

I remember something about preheat requirements being linked to carbon content, so maybe option B could be correct too?

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11 days ago

I think the carbon equivalent formula is mainly about weldability, so I might lean towards option D, but I'm not entirely sure.

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