How much is the best mica?
Mica has a good heat resistance, will not melt in high temperature environment, but with the rise in temperature, due to different mica iron content, can present different colors, but does not affect the performance.
In general, mica began to dehydrate at about 700 degrees, and its thermal resistance decreased with increasing temperature until it finally broke down
The best mica and the worst mica have almost the same temperature resistance. The difference between good and bad is in purity and impurities
