When acids react to metals, be it IRON, METL, TTAN, TUNG etc... You guys should make it so that it releases HYGN gas and probably leave some SALT behind. This is just a suggestion :)
The problem with changes like this is that they'll affect existing saves. I don't think using acid on metal is super common, but even so...
Unfortunately, realism in TPT is not enough of a reason to justify change, though there are a lot of mods that aim for realism