API-577 Exam - Topic 2 Question 5 Discussion

Actual exam question for API's API-577 exam

Question #: 5
Topic #: 2

To reduce the possibility of cracking, which of the following maximum hardness levels is required for weldments in wet H2S service?

AHRC 20

BHRC 22

CHRC 25

DHRC 32

Show Suggested Answer

Suggested Answer: B

by Jaclyn at Jan 14, 2025, 04:35 PM

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Carlton

7 months ago

I agree, HRC 22 is the sweet spot!

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Elsa

7 months ago

Wait, HRC 32? That seems way too high!

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Kallie

8 months ago

Definitely HRC 20 for sure!

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Dottie

8 months ago

I thought it was HRC 25.

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Barbra

8 months ago

HRC 22 is the max hardness for wet H2S, right?

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Kelvin

8 months ago

I thought it was HRC 32, but that seems too high for cracking concerns in H2S service.

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Stevie

9 months ago

I’m leaning towards HRC 20, but I recall there being some debate about the exact number in class.

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Huey

9 months ago

I remember practicing a similar question, and I feel like HRC 25 was mentioned as a limit, but it could be higher.

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Haydee

9 months ago

I think the maximum hardness for wet H2S service is around HRC 22, but I'm not completely sure.

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Bong

9 months ago

I'm confident I know the answer to this. Harder materials are generally more resistant to cracking in corrosive environments.

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Ashlee

9 months ago

Okay, I've got a strategy. I'll think through the factors that contribute to cracking resistance and see which hardness level best fits the criteria.

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Annabelle

9 months ago

Hmm, I'm not too sure about this. I'll have to review my notes on material properties and corrosion resistance.

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Rueben

9 months ago

This is a tricky one. I'll need to think carefully about the relationship between hardness and cracking in wet H2S environments.

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Margurite

1 year ago

I bet the correct answer is HRC 32. If it's tough enough for Wolverine's adamantium claws, it'll work for this too.

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Ashton

1 year ago

I'm going with HRC 20.

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Dorcas

1 year ago

I believe it's HRC 22.

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Ronnie

1 year ago

I'm not so sure, I think it might be HRC 25.

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Lisbeth

1 year ago

I think the correct answer is HRC 32.

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Selene

1 year ago

HRC 20? Really? I'd like to see that weld hold up against a sneeze, let alone wet H2S service.

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Antione

1 year ago

Definitely HRC 22. This isn't a sword fight, we don't need overkill here.

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Lore

1 year ago

Yeah, no need to go overboard with HRC 32. HRC 22 is the way to go.

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Elke

1 year ago

I agree, HRC 22 should be sufficient for wet H2S service.

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Karan

1 year ago

HRC 25 seems like the sweet spot to me. Anything higher might make the weld too brittle.

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Alberta

1 year ago

I think HRC 25 strikes the right balance between hardness and avoiding brittleness.

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Leota

1 year ago

I agree, HRC 25 is the best choice for weldments in wet H2S service.

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Micheline

1 year ago

I'm not sure, but I think D) HRC 32 might be too high for this application.

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Scarlet

1 year ago

I agree with Jestine, HRC 25 makes sense for wet H2S service.

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Jestine

1 year ago

I think the answer is C) HRC 25.

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Cherry

2 years ago

I'd go with HRC 32. Gotta keep that weld extra tough to withstand the wet H2S service!

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Elza

1 year ago

HRC 32 seems like the best option to ensure the weldments are strong enough.

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Dortha

1 year ago

I would choose HRC 32 as well, better safe than sorry.

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Cassi

1 year ago

I think HRC 32 is the way to go for sure.

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