In my experience it works super well with chrome, especially with small chrome bits that are otherwise hard to get cleaned up. This is with a fairly weak solution, less than a tablespoon to a gallon.

The problems come when you have an assembly with different types of surfaces, the OA will act very differently. For example, if you have an old wheel with chrome rims and galvanized spokes, the amount of time that you need to leave it in there to get the rust off the chrome will be too much for the spokes, and it will leave a crusty buildup.