Need help with internal spoke nipples

[DeLuz]

Heard something bouncing around in my wifes front rim, turns out it was a piece of cracked nipple.
There is still enough nipple there so the spoke has not lost tension.
Looks like the nipple is aluminum and corroded.
I took off the rim tape and inspected the other nipples and at least one more that is cracked.
I am thinking I should replace them with brass nipples.
Found Sapim and Enve both make brass internal nipples, Enve costs twice as much but not sure why.
Being that these are carbon rims I am not sure how much to tension spokes, normally for an aluminum front rim I would go 100 Kgf.
I have not inspected the rear wheel yet , but I am guessing it must also have cracked nipples being that the stress is higher.
Thanks for any advice.

[joeyb1000]

I've built a number of carbon wheels (external nipples). I use 100kpf on front. 120-130kpf drive side rear -- so then rear averages 100.

[alcatraz]

So much material and it still split in two pieces. I'm going to say this is more of a fluke than normal corrosion. Bad casting or whatever.

[DeLuz]

I think it is just a crappy cheap nipple. The only ones I could find that are similar are on AliExpress.

[and]

Here are some ENVE front wheel nipples after minimal use mostly in summer.




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[spdntrxi]

both type of nipples will corrode... if you are running tubeless add the importance of a very good tape job. Sealents will make this problem happen faster.