Ceramic Bead of Aluminium Oxide for ceramic pad heater | heating elements.

Aluminium Oxide Ceramic Bead’s Parameters and Uses

Aluminium Oxide Ceramic Bead is a device used to preheat and postheat after eliminating the stress in the welding process in the heating of ceramic gasket and pipeline. It is used in the welding field with high requirements such as shipbuilding.

Performance	Parameter
Bulk density	g/ cm3> 3.50
Flexural strength	(MPa) 304
Coefficient of linear expansion	20~800°C x10-6/°C 6.5~8.0
Dielectric constant	1MHz 9~10 10GHz 9~10
Dielectric loss	1MHz×10-6≤4 10GHz×10-6≤10
Specific volume resistance	100°CΩ•Cm＞1013
Breakdown strength	KV/mm 15
Thermal conductivity	20°C W/m•k 25.5