10 - Ceramic Protection Tube

The tubes are closed at one end and the other attached to a metallic sleeve with thread for adaptation to the head used , usually in processes involving temperatures above 1200 ° C or where one can not use a metal tube .


They are available in diameters of 10, 15 , 20 and 24 mm are normally used materials below:

Material	T Máxima	Observações
610 (60% de alumina)	1600 °C	Porous material , good mechanical strength , good thermal conductivity , sensitive to thermal shock.
710 (99,7% de alumina)	1800 °C	non-porous , mechanical strength and thermal conductivity higher than 610 type , sensitive to thermal shock.
Silicon carbide	1500 °C	highly porous, low mechanical strength , high thermal conductivity, thermal shock resistant .
Silicon carbide Recrystallized	1650 °C	Good resistance to acids and alkalis, recommended for use in neutral atmospheres , widely used in aluminum smelting , copper, etc.
Silicon nitride (Silon )	1200 °C	Resistance to thermal shock , high hardness break, good temperature conductivity , low thermal expansion , good oxidation resistance , used in casting non-ferrous metals.