So many chemicals have been weakened nowadays. You might be able to get away with using some things that a few years ago, you wouldn't dare. You could try some scraps of different metals and see how they react to various cleaners.
I used to believe in Eagle One Aluminum Mag Wheel Cleaner for open pore aluminum, it would fizz and foam and sometimes green looking stuff would bubble up, rinse it off and DONE. Years go by, I finally found some more of it and tried it - what a joke - no better than 409 that has been cut back too!