V-Cerax characteristics table

Product characteristics (99.5% or higher A-30 alumina)
Characteristic item	Unit	Characteristic value (A-30)
Main component (Content)	―	AL₂O₃ 99.5% or more
Color	―	Pale yellow
Bulk specific gravity	―	3.9 or more
Water absorption	％	0
Hardness	GPa	16
Flexural strength	MPa	400
Young’s modulus	GPa	390
Poisson’s ratio	―	0.24
Fracture toughness	MPa・m1/2	3.6
Specific heat	J/(kg・K)	920
Thermal conductivity	W/(m・K)	28
Thermal expansion coefficient	×10^-6/K	5.7(0～50℃)
Thermal shock temperature	℃	200
Permittivity	―	10.2(1MHz)
Dielectric dissipation factor	tanσ(×10^-3)	8.2(1MHz)
Volume specific resistance	Ω・cm	10^14(20℃）
Dielectric strength	kV/mm	12

Responding to ceramics of various quality