Physical Properties of Engineering Ceramics

Material		Silicon Carbide（SiC）					Silicon Nitride（Si3N4）		Alumina			Zircoria Toughened Alumina	Zirconia(ZrO2)
									99.5%Al2O3	99.9%Al2O3	99.8%Al2O3
Trademark		－	－	NVSiC®	HEXOLOY	HEXOLOY	－	HSTSiN®	－	－	HALOX	HALOX-Z	－
Material Code		SCP01	SCP02	SCP03	SA	SP	SNP02	SNP03	ALP01	ALP02	H580	Z734	ZRP01
Density [g/cm3]	JIS R1634	3.1	3.1	3.1	3.1	3.0	3.2	3.2	3.9	3.9	3.9	4.4	6.0
Flexural Strength [MPa]	JIS R1601	490	490	700	450	240	800	1000	440	500	350	650	1300
Vickers Hardness [GPa]	JIS R1610	25	25	25	25	24	15	15	16	17	16	15	12
Young's Modulus [GPa]	JIS R1602	430	430	435	410	380	290	300	370	370	380	320	210
Poisson's Ratio [－]	JIS R1602	0.16	0.18	0.18	0.15	0.16	0.29	0.30	0.25	0.25	0.24	0.25	0.30
Fracture Toughness [MPa・m1/2]	SEPB method JIS R1607	3	3	3	2	－	6	7	4	3	4	5	5
Thermal Expansion [×10－6/K]	RT～200℃ JIS R1618	3.1	3.1	3.1	－	－	2.0	2.0	6.3	6.3	－	－	10.0
	RT～800℃ JIS R1618	4.3	4.3	4.3	4.2 (RT～700℃)	4.2 (RT～700℃)	3.2	3.2	8.0	8.0	8.0	9.0	11.0
Thermal Conductivity [W/m・K]	RT JIS R1611	140	170	130	160	160	25	35	33	30	30	19	3
Thermal Shock Resistance [K]	JIS R1648	400	400	400	－	－	700	800	200	200	－	－	350
Dielectric Strength [kv/mm]	JIS C2110	－	－	－	－	－	>8	>8	>10	>10	－	－	>7
Volume Resistivity [Ω・cm]	3-terminal method JIS C2141	104	106	－	106~1011	106~1011	>1014	>1014	>1014	>1014	>1014	>1012	>1012
Dielectric Constant [－]	（1MHz)	－	－	－	－	－	8.0	8.0	10	10	－	－	40
Characteristics		Corrosion Resistant High Hardness	High Thermal Conductivity High Resistance	High Strength Small pores	Mass Production Joining	High Slidability	High Thermal Shock Resistance Lightweight High Strength	High Strength High Reliability	General Purpose High Rigidity	High Purity High Rigidity	General Purpose Large Product	High Strength Wear　Resistance	High Strength Wear Resistant
Material		Silicon Carbide（SiC）					Silicon Nitride （Si3N4）		Alumina			Zircoria Toughened Alumina	Zirconia （ZrO2）
									99.5%Al2O3	99.9%Al2O3	99.8%Al2O3
Trademark		－	－	NVSiC®	HEXOLOY	HEXOLOY	－	HSTSiN®	－	－	HALOX	HALOX-Z	－
Material Code		SCP01	SCP02	SCP03	SA	SP	SNP02	SNP03	ALP01	ALP02	H580	Z734	ZRP01

The above property values are not guaranteed values.
For the purpose of improvements, the property values are subject to change without prior notice.
HEXOLOY is registered trademark of SAINT-GOBAIN.