Cybertronian metal is different from other alloys as far as I know, it could have other applications, I'd have to research it but you've given me a great idea to play around with!
I'm not sure if it can't be melted down or not, all I'm saying is that I need to do some research into Cybertronian alloys before I know what it can be used for, it could be used to make titans and other stuff as well