Physical Properties of Engineering Ceramics

Material		Silicon Carbide（SiC）			Silicon Nitride（Si3N4）		Alumina		Zirconia(ZrO2)
							99.5%Al2O3	99.9%Al2O3
Trademark		－	－	NVSiC®	－	HSTSiN®	－	－	－
Material Code		SCP01	SCP02	SCP03	SNP02	SNP03	ALP01	ALP02	ZRP01
Density [g/cm3]	JIS R1634	3.1	3.1	3.1	3.2	3.2	3.9	3.9	6.0
Water Absorption [%]	Underwater substitution method	0	0	0	0	0	0	0	0
Flexural Strength [MPa]	JIS R1601	490	490	700	800	1030	440	450	980
Vickers Hardness [GPa]	Vickers JIS R1610	25	25	25	15	15	16	17	13
Young's Modulus [GPa]	JIS R1602	430	430	436	290	307	370	370	210
Poisson's Ratio [－]	JIS R1602	0.16	0.18	0.18	0.29	0.30	0.25	0.25	0.31
Fracture Toughness [MPa・m1/2]	SEPB method JIS R1607	3	3	3	6	7	3～4	3～4	6
Thermal Expansion [×10－6/K]	RT～200℃ JIS R1618	3.1	3.1	3.1	1.6	1.6	6.3	6.3	10.0
	RT～800℃ JIS R1618	4.3	4.2	4.3	3.1	3.2	7.7	7.9	10.7
Thermal Conductivity [W/m・K]	RT JIS R1611	140	170	132	24	36	33	30	3
Thermal Shock Resistance [K]	JIS R1648	400	400	400	700	800	200～250	200～250	350
Dielectric Strength [kv/mm]	JIS C2110	－	－	－	>10	>10	>10	>10	>10
Volume Resistivity [Ω・cm]	3-terminal method JIS C2141	104	106	－	>1014	>1014	>1014	>1014	>1012
Dielectric Constant [－]	（1MHz)	－	－	－	8.0	7.5	10	10	40
Characteristics		Corrosion Resistant High Hardness	High Thermal Conductivity High Resistance	High Strength Small pores	High Thermal Shock Resistance Lightweight High Strength	High Strength High Reliability	General Purpose High Rigidity	High Purity High Rigidity	High Strength Wear Resistant
Material		Silicon Carbide（SiC）			Silicon Nitride （Si3N4）		Alumina		Zirconia （ZrO2）
							99.5%Al2O3	99.9%Al2O3
Trademark		－	－	NVSiC®	－	HSTSiN®	－	－	－
Material Code		SCP01	SCP02	SCP03	SNP02	SNP03	ALP01	ALP02	ZRP01

The above property values are not guaranteed values.
For the purpose of improvements, the property values are subject to change without prior notice.