I have a Mauviel copper sauté pan. It is 2.5mm thick, stainless steel
lining, and has cast iron handles (yes, mine has two handles, the second one
is a helper handle).

Is this pan oven safe up to 500 degrees Fahrenheit? The copper won't melt
(nearly 2000 degrees for that to happen). But I was wondering if the handles
have some kind of coating to keep them from rusting that may burn at those
temperatures. Maybe it is only good to 400 degrees?

Thanks