Properties

Unit

95Al2O3

99Al2O3

ZrO2

GP-Si3N4

99BN

Glass
Ceramic

 Color

-

white

ivory

white

black

white

white

 Density

g/cm³

3.65

3.88

5.95

3.20

2.00

2.55

 Water Absorption

%

0

0

0

0

0.0-1.0

0

 Young's Modulus

Gpa

280

350

205

295

670

65

 Vickers Hardness

Gpa

14

20

12

18-20

-

-

 Flexural Strength ( at R.T. )

Mpa

280

300

900

650

51

100

 Compressive Strength ( at R.T. )

Mpa

2000

2500

2200

2200

230

500

 Thermal Conductivity ( at R.T. )

W/(m.K)

18-25

30

2.20

25

20

1.70

 Thermal Shock Resistance

ΔT(°C)

220

180-200

280-350

450-650

>1500

25-100

 Max. Using Temp. ( at R.T. )

°C

1500

1700

850

1200

960

800

 Volume Resistivity ( at R.T. )

Ω.cm

>10^15

>10^14

>10^12

>10^14

>10^13

>10^16

 Dielectric Constant (1 MHz at R.T. )

-

9.50

9.80

26

8.20

4.08

6.02

 Dielectric Strength

KV/mm

16

22

-

16

375

40

Note:
Although we have no reason to doubt the accuracy of the data presented, this information is offered for comparison only.
Exact properties will vary depending on the 
manufacturing method and part configuration, and can sometimes be tailored to meet specific requirements.