... This kind of product is a kind of high temperature resistance insulating material,we let mica powder ... board, pipe and tile.HP-5 has a high mechanical strength, heat Resistance, and can be used ... used in electric heaters,electric arc furnace for steel-making, Calcium carbide, ferroalloy, mining and metallurgy furnace. ... 500~C%1.6 HP-5 high temperature resistance muscovite powder series mica products