Properties

Units

Steatite

Cordierite

Mullite

Colour

White

Yellow

White

Density

g/cm3

2.7

1.9

2.0

Flexural Strength

Mpa

140

30

120

Compressive Strength

MPa

900

350

500

Max Use Temperature

°C

1000

1200

1300

Thermal Condutivity

W/m.K

2~3

1.3~1.8

2~6

Thermal Expansion Cofficient

10-6/°C

7 ~ 9

1.5~3.5

5~6

Thermal Shock Resistance

K

100

300

150

Specific Heat

J/kg.K

850

800

900

Dielectric Strength

KV/mm

20

—

30

Dielectric Constant

Er

6

—

8