Heating Element: Silicon carbide(SIC) heating ROD, molybdenum Disilicide (MoSi2) U shape rod amp; Kanthal A1 wires according to the temperature. Muffle Furnace Diagram Furnace Temperature Range: Room environment temperature to 800°C, 900°C, 1000°C, 1100°C, 1200°C, 1450°C, 1700°C, 1800°C.