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API-577 Exam - Topic 7 Question 20 Discussion

Actual exam question for API's API-577 exam
Question #: 20
Topic #: 7
[All API-577 Questions]

The most common measure of weldability and susceptibility to hot cracking of austenitic stainless steels is the ferrite content of the weld metal. Which of the following ranges is the recommended minimum ferrite content of the weld metal needed to prevent cracking?

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Suggested Answer: C

by Lauran at Nov 24, 2025, 09:19 PM

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Carolynn
7 hours ago
D) 15%-20% could be overkill.
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Alton
5 days ago
A) 1%-10% is too low for safety.
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Julene
10 days ago
I feel like C) 8%-18% is more accurate.
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Clarinda
29 days ago
Yeah, B sounds right to me too!
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Darci
1 month ago
Pretty sure it's A) 1%-10%. That's what I learned.
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Lauran
1 month ago
Haha, I bet the answer is D. 15%-20% because that's the range where the welder can take a coffee break and the weld won't crack!
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Nicolette
1 month ago
B. 5%-20% is the way to go. Gotta have that sweet spot for weldability.
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German
2 months ago
Definitely C. I've seen this recommended in several welding manuals.
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Margarett
2 months ago
I think the answer is C. 8%-18% seems like the right range to prevent cracking.
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Vanesa
2 months ago
I thought it was 15%-20%, but that seems a bit high for the minimum requirement.
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Alecia
2 months ago
I practiced a similar question last week, and I believe the recommended range is around 5%-20%.
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Georgiana
2 months ago
I think I remember something about ferrite content being crucial for preventing hot cracking, but I'm not sure about the exact range.
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Willow
3 months ago
This is a tricky one. I'm torn between B and C, but I think I'll go with C since it seems to be the most specific range mentioned.
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Dick
3 months ago
Okay, let me see. I remember learning that austenitic stainless steels need a certain amount of ferrite to avoid hot cracking. I think option C sounds right, but I'll double-check my notes just to be sure.
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Dick
3 months ago
The question is asking about the ferrite content needed to prevent cracking, so I'm guessing the higher end of the range is better. I'll go with option D.
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Nenita
3 months ago
I think it's B) 5%-20%. Seems safe.
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Pete
3 months ago
Wait, is it really that low? I thought it was higher!
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Margot
3 months ago
I think it's B) 5%-20% for sure.
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Hyman
4 months ago
I disagree, I believe it's C) 8%-18%.
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Isaiah
4 months ago
I feel like the answer might be closer to 8%-18%, but I can't recall the details clearly.
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Felix
4 months ago
Hmm, I'm not too sure about this one. I'll have to think it through carefully before deciding.
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Marya
4 months ago
I think the recommended range is 8%-18%, so I'll go with option C.
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