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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14 days ago

I thought it was more about preheat needs, but D makes sense.

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19 days ago

It's all about weldability, so D is the one!

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1 month ago

I'm a bit confused; I thought the formula was more about the theoretical carbon content, but that doesn't seem to fit with the other options.

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2 months 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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2 months ago

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

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2 months 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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