Al2O3,S-Sic,ZrO2,Si3N4 Data Sheet

Main component			99%Al2O3	S-SiC	ZrO2	Si3N4
Physical Property	Density	g/cm3	3.90	3.1	6	3.2
	Water Absorption	%	0	0.1	0	0.1
	Sinter Temperature	°C	1700	2200	1500	1800
Mechanical Property	Rockwell Hardness	HV	1700	2200	1300	1400
	Bend Strength	kgf/mm2	3500	4000	9000	7000
	Compression Intensity	Kgf/mm2	30000	20000	20000	23000
Thermal Property	Maximum working temperature	°C	1500	1600	1300	1400
	thermal expansion coefficient 0-1000°C	/°C	8.0*10-6	4.1*10-6(0-500°C)	9.5*10-6	2.0*10-6(0-500°C)
				5.2*10-6(500-1000°C)		4.0*10-6(500-1000°C)
	Thermal Shock resistance	T(°C)	200	250	300	400-500
	Thermal Conductivity	W/m.k(25°C	31	100	3	25
		300°C)	16	100	3	25
Electrical Property	Resisting rate of Volume	◎.cm
	20°C		>1012	106-108	>1010	>1011
	100°C		1012-1013	-	-	>1011
	300°C		>1012	-	-	>1011
	Insulation Breakdown Intensity	KV/mm	18	semiconductor	9	17.7
	Dielectric Constant (1 MHz)	(E)	10	-	29	7
	Dielectric Dissipation	(tg o)	0.4*10-3	-	-	-