MATERIAL	MgO Magnésia	BN boron nitride	SiC Silicium carbide	SiN Silicium nitride	Ti3Al Aluminium titanate	AlN Aluminium nitride
Ref	MG2300	NB HD	SIC2500	SIN1300	ALU-TIT T	AlN140	AlN180
Purity	MgO	BN	SiC	SSN	Al2TiO5
Main characteristics
Densityg/cm3	2,5	2.2	3,1	3,2	3,35	3,24	3,31
	2,8		3,2	3,22
Open porosity %	20	0	0	0	12,5
	30
Particle size µm	70	-	1	5	> 0,2
Mechanical characteristics 20 °C
Hardness vickers HV10 N/mm²	-	190	2500	1600
Compressive strength N/mm²	800	160	2900	2500		2100	2000
Flexural strength N/mm²	165	32-46	430	750	25	350	>300
Modulus of elasticity Gpa	250	58-83	440	300	17	310	310
Thermal characteristics
Max use Temp °C	2300	1600	1800	1300	1000
Specific heat 20°C J/kg°K	-	1960	1000	700
Thermal cond. 100°C W/mK	-	49	90	35	1,4	140	180
Thermal expansion 20-1000°C 10-6 /K-1	13,5	8	4,1	3,3	< 1 (20 à 600°C)	5,6	5,6
Electrical characteristics
Resistivity  20°C Ohmcm	10^14	5^12	10^2	10^12	50.10^8	>10^12	>5x10^12
Resistivity  500°C Ohmcm	10^10	-	-	-
Resistivity  1000°C Ohmcm	10^7	10^9	0,2	10^7
Dielectric strength  kV/mm	9	39	-	-		> 25	> 20