API Exam API-577 Topic 7 Question 9 Discussion

Actual exam question for API's API-577 exam

Question #: 9
Topic #: 7

[All API-577 Questions]

Codes/standards sometimes specify impact testing of weldments at minimum design metal temperatures to:

AAssure that the welded material has sufficient yield strength to avoid brittle fracture.

BAssure that the welded material has sufficient ductility to assist brittle fracture.

CAssure that the welded material has sufficient toughness to resist brittle fracture.

DAssure that the welded material has sufficient tensile strength to avoid failure at design loads.

Show Suggested Answer

Suggested Answer: D

by Christiane at Mar 04, 2025, 09:41 AM

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2 days ago

Haha, D is just plain wrong. Tensile strength has nothing to do with brittle fracture. Clearly the correct answer is C.

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3 days ago

Hmm, I was thinking B, ductility. But I guess toughness is more specific to resisting brittle fracture. Good catch!

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12 days ago

I'm not sure, but I think it's important to consider both yield strength and toughness in weldments.

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14 days ago

I agree with German, impact testing is important to ensure the welds can withstand potential brittle fractures.

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16 days ago

I think the answer is C. Toughness is the key property that prevents brittle fracture in weldments at low temperatures.

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22 days ago

I think the answer is C) Assure that the welded material has sufficient toughness to resist brittle fracture.

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