[blykins]

Rick, you an engineer too? Since you have AEP on your email addy, you a EE?

Disipation of heat for ferrous and non-ferrous...hmmm...Let me see if I can find something in my Heat Transfer book. If I can remember, there's a lot of variables in such as air flow, area, source of heat, etc. May not be as easy as one formula.....