i just mentioned this to my wife. she asked at what temp was the cook and i said 450 and she said you can't, that its only good to 350 deg. i mentioned the pouring of gravy and she said you can't do that either unless the gravy is very hot also. she has the same dish that she has had for over 35 years. so i assume that they are fine for basic normal cooks. steel should be used for the extremes.
spam, can't live without it