API-571 Exam - Topic 1 Question 114 Discussion

Actual exam question for API's API-571 exam

Question #: 114
Topic #: 1

[All API-571 Questions]

For 5Cr-0.5Mo, what is the threshold temperature for creep?

A500 F

B800 F

C600 F

D700 F

Show Suggested Answer

Suggested Answer: B

by Derick at Jul 30, 2025, 07:41 PM

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Clorinda

8 months ago

Wait, are we sure about these numbers? Sounds off to me.

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Virgie

8 months ago

Definitely 700 F, that's what I've seen!

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Han

8 months ago

I think the threshold is around 600 F.

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Ettie

9 months ago

800 F seems way too high for that alloy.

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Macy

9 months ago

I’m pretty sure it’s 500 F, but I could be wrong.

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Glory

9 months ago

I have a vague memory of 500 F being mentioned, but it seems too low for creep in this alloy.

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Elke

9 months ago

I practiced a question like this, and I want to say it's 800 F, but I could be mixing it up with another material.

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Desiree

9 months ago

I remember studying creep behavior, and I feel like 700 F might be the right answer based on similar alloys.

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Sheridan

10 months ago

I think the threshold temperature for creep is around 600 F, but I'm not entirely sure.

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Myra

10 months ago

This is a tough one. I'm going to have to think carefully about the relationship between temperature, alloy composition, and the onset of creep.

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Precious

10 months ago

Creep is tricky, but I'll try to break this down. The alloy composition and temperature are key variables to consider.

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Marsha

10 months ago

Okay, I remember learning about this in class. I think I can work through this step-by-step to find the right answer.

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Bambi

10 months ago

Hmm, I'm not too familiar with creep in this specific alloy. I'll have to review my notes on creep mechanisms and how alloying elements can influence them.

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Tommy

11 months ago

This looks like a materials science question. I'll need to think about the factors that affect creep behavior in alloys.

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Miesha

11 months ago

I agree with Carman, 600 F sounds more reasonable for creep

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Carman

11 months ago

But the threshold temperature for creep is usually lower, maybe 600 F?

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Ramonita

11 months ago

I believe it's 800 F

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Carman

1 year ago

I think it's 700 F

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Lakeesha

1 year ago

Hmm, I'm not so sure. I'm leaning towards C) 600 F. Doesn't that sound more realistic for a creep threshold?

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Paz

11 months ago

Are you sure? I remember reading it's B) 800 F.

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Jade

11 months ago

I think it's actually D) 700 F.

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Aleisha

1 year ago

I think the answer is B) 800 F. That temperature range seems about right for creep in 5Cr-0.5Mo steel.

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Loreta

11 months ago

I believe the correct answer is D) 700 F.

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Rodrigo

11 months ago

I'm not sure, but I think it might be C) 600 F.

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Devorah

1 year ago

I agree, I also think the answer is B) 800 F.

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