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API-571 Exam - Topic 1 Question 114 Discussion

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

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

Suggested Answer: B

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25 comments · newest first
CL
Clorinda 9 months ago
Wait, are we sure about these numbers? Sounds off to me.
VI
Virgie 10 months ago
Definitely 700 F, that's what I've seen!
HA
Han 10 months ago
I think the threshold is around 600 F.
ET
Ettie 10 months ago
800 F seems way too high for that alloy.
MA
Macy 10 months ago
I’m pretty sure it’s 500 F, but I could be wrong.
GL
Glory 10 months ago
I have a vague memory of 500 F being mentioned, but it seems too low for creep in this alloy.
EL
Elke 11 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.
DE
Desiree 11 months ago
I remember studying creep behavior, and I feel like 700 F might be the right answer based on similar alloys.
SH
Sheridan 11 months ago
I think the threshold temperature for creep is around 600 F, but I'm not entirely sure.
MY
Myra 11 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.
PR
Precious 12 months ago
Creep is tricky, but I'll try to break this down. The alloy composition and temperature are key variables to consider.
MA
Marsha 12 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.
BA
Bambi 12 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.
TO
Tommy 1 year ago
This looks like a materials science question. I'll need to think about the factors that affect creep behavior in alloys.
MI
Miesha 1 year ago
I agree with Carman, 600 F sounds more reasonable for creep
CA
Carman 1 year ago
But the threshold temperature for creep is usually lower, maybe 600 F?
RA
Ramonita 1 year ago
I believe it's 800 F
CA
Carman 1 year ago
I think it's 700 F
LA
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?
PA
Paz 1 year ago
↳ replying to Lakeesha
Are you sure? I remember reading it's B) 800 F.
JA
Jade 1 year ago
↳ replying to Lakeesha
I think it's actually D) 700 F.
AL
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.
LO
Loreta 1 year ago
↳ replying to Aleisha
I believe the correct answer is D) 700 F.
RO
Rodrigo 1 year ago
↳ replying to Aleisha
I'm not sure, but I think it might be C) 600 F.
DE
Devorah 1 year ago
↳ replying to Aleisha
I agree, I also think the answer is B) 800 F.
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