Does amber armor upgrade to chain armor?

[Torpedo]

I have recently gotten an amber helmet by a soul essence, and i've been wondering if upgrading above Protection III makes it a chanmail helmet...
As far as i can see in the upgrader tab, it changes it into a regular chainmail helmet. I havent done it yet tho...
If you know what happens pls reply

 

[Torpedo]

By the way, ive also been wondering if an amber helmet with protection III is as good as netherite