Level Cap on AF armore?Follow

If you're asking about level caps on the quests to get the pieces, then the answer it no. As far as I know, none of the AF armor/weapons quests involve a level cap.

If you're asking about the armor/weapons themselves, the weapons are equippable between 40-42 (depending on which job), and the armor is equippable at 52, 54, 56, 58, 60 (what pieces are available at those levels depends on the job).

If you need more info on how to obtain your AF, start by looking at the lefthand navigation bar here. Go to 'Quests', click 'By Type', click 'Artifact'.