Quote Originally Posted by lowfat View Post
No it doesn't. The only benenfit of aluminum is weight and cost.
Quote Originally Posted by Monkey Puzzled View Post
No. Companies use aluminium because it's cheap and easy to machine/manufacture. It's also much lighter. It has worse thermal transfer; about twice as poor as copper.
Actually, only 1 rad has used copper tubes and fins, that was the X-Changer. Everything else used brass tubes, copper fins and aluminum does have a higher thermal transfer than brass.