API-577 Exam - Topic 9 Question 14 Discussion

Actual exam question for API's API-577 exam

Question #: 14
Topic #: 9

When performing a carbon steel to carbon steel hot tap where the CE of one of the metals is greater than 0.42%, which of the following electrodes should be used?

AE7048-H4

BE7048

CE7018-A1

DE7018

Show Suggested Answer

Suggested Answer: D

by Alease at Jul 07, 2025, 11:22 AM

Limited Time Offer

25%

Off

Get Premium API-577 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Rickie

8 months ago

Surprised E7018 isn't recommended, thought it was a go-to.

upvoted 0 times

...

Harley

8 months ago

I think E7018 would work too, right?

upvoted 0 times

...

Gaynell

9 months ago

I disagree, E7018-A1 could be a solid option as well.

upvoted 0 times

...

Tawny

9 months ago

Definitely E7048-H4, no doubt about it.

upvoted 0 times

...

Chantay

9 months ago

E7048-H4 is the right choice for high CE!

upvoted 0 times

...

Latrice

9 months ago

I recall something about E7048 being better for hot taps, especially with a CE over 0.42%. I think that’s what I’d go with.

upvoted 0 times

...

Dulce

10 months ago

I’m a bit confused. I know E7018 is commonly used, but I feel like it might not be suitable for this situation.

upvoted 0 times

...

Derick

10 months ago

I practiced a similar question, and I believe E7048-H4 is specifically designed for higher CE materials. That might be the right answer.

upvoted 0 times

...

Francoise

10 months ago

I think I remember that for higher carbon equivalents, we should be cautious about cracking. E7018 might be a safe choice, but I'm not entirely sure.

upvoted 0 times

...

An

10 months ago

Based on the information provided, I believe the correct answer is E7048-H4. The high-hydrogen coating should help manage the higher carbon content.

upvoted 0 times

...

Tarra

10 months ago

I'm a bit confused on the difference between the electrode options. I'll need to review the properties of each one to make the best choice.

upvoted 0 times

...

Zena

10 months ago

Okay, I remember learning about this in class. I think the key is to use an electrode that can handle the higher carbon content.

upvoted 0 times

...

Rashida

11 months ago

Hmm, this seems like a tricky one. I'll need to think carefully about the carbon equivalent (CE) and how that relates to the electrode choice.

upvoted 0 times

...

Fatima

1 year ago

E7018? More like E7-NOPE! Gotta go with the H4 for that high-carbon steel, my friends.

upvoted 0 times

...

Alica

1 year ago

Is it just me, or does this question have a hint of 'carbon' in it? E7048 all the way!

upvoted 0 times

Miesha

11 months ago

I agree, E7048 is the best choice for high carbon steel.

upvoted 0 times

...

Tamekia

1 year ago

I believe E7048-H4 is the correct electrode to use in this case

upvoted 0 times

...

Anglea

1 year ago

I'm not sure, but I think E7018-A1 might also work

upvoted 0 times

...

Diane

1 year ago

I agree with Coral, E7018 is the best choice for this scenario

upvoted 0 times

...

Filiberto

1 year ago

Hmm, I'd say E7018-A1 for that CE above 0.42%. Sounds like the perfect match to me.

upvoted 0 times

...

Vincent

1 year ago

E7048-H4 is the way to go! Gotta handle that high-carbon steel with care.

upvoted 0 times

Sunny

1 year ago

Using E7048-H4 is crucial for a successful hot tap on high-carbon steel.

upvoted 0 times

...

Fausto

1 year ago

I agree, E7048-H4 is designed to handle those high CE levels.

upvoted 0 times

...

Osvaldo

1 year ago

E7048-H4 is definitely the best choice for high-carbon steel.

upvoted 0 times

...

Coral

1 year ago

I think the correct electrode to use is E7018

upvoted 0 times

...