Nitric acid is just faster, the passivation layer isn't better than you get with plain old citrc acid.
Passivation isn't really enough for a car though, they basically get sand blasted while driving on the road, and every little pit is an area where the material would have to repassivate without rusting. SS301 isn't nearly as good at that game as some other alloys.
Passivation isn't really enough for a car though, they basically get sand blasted while driving on the road, and every little pit is an area where the material would have to repassivate without rusting. SS301 isn't nearly as good at that game as some other alloys.