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

3 months ago

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

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Virgie

3 months ago

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

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Han

3 months ago

I think the threshold is around 600 F.

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Ettie

4 months ago

800 F seems way too high for that alloy.

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Macy

4 months ago

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

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Glory

4 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

4 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

5 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

5 months ago

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

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Myra

5 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

5 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

5 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

5 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

6 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

6 months ago

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

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Carman

6 months ago

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

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Ramonita

6 months ago

I believe it's 800 F

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Carman

7 months ago

I think it's 700 F

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Lakeesha

7 months 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

6 months ago

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

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Jade

6 months ago

I think it's actually D) 700 F.

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Aleisha

8 months 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

6 months ago

I believe the correct answer is D) 700 F.

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Rodrigo

6 months ago

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

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Devorah

7 months ago

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

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