In article , Bob Engelhardt
wrote:

I have a C6 steel-cutting blade in a (small) dedicated table saw. A
couple of times it was so convenient that I used it on aluminum. But
reluctantly. I kept wondering whether it was a Bad Idea. The only bad
thing that I could think of was that I might get aluminum welded to the
tips. But that hasn't happened (yet). Is it OK or not?

Bob

Use a cutting fluid or a stick wax and it will be fine.
Without a fluid or wax the aluminum will smear onto the saw tips and
eventually clog the teeth.