No you can definitely chrome plate aluminum, so lets get that settled. Reason I know?

Back in the day (mid 80's) I spent well over a thousand bucks getting chrome work done on a custom Harley 'sportster' I had that was a show bike. The bike was a '75 XLCH with drag pipes and I had the aluminum forks (superglide) completely chromed along with the aluminum lower end cases and other aluminum bits and pieces. It was a beautiful bike and I'm sorry as the day is long that I sold it.

So yeah, you can chrome aluminum.