Item

Index

Cordierite

Cordierite

-mullite

High alumina

High alumina-

mullite

Mullite

Mullite

-Corundum

Electro-meltingcorundum

SSJQ

-40

SSJM

-45

SSG

-50

SSGM

-60

SSML

-60

SSMG

-72

SSDG

-80

AL2O3(%)

34.5-40

41-45

46-50

51-60

61-65

66-72

73-90

BD(g/cm3)

0.7-0.8

0.81-0.9

0.91-0.96

0.97-1

1.01-1.1

1.12-1.18

1.2-1.4

Thermal expansion coefficient(10-6/oc

2-3

3-4.1

8.3-9

5-6.1

4.2-5

5.1-6

5.6-3

Coeffcient of thermal conductivity(W/M.K)>

1

1.1

1.11

1.12

1.15

1.25

1.3

Maximum operation temperature(oc)

1230

1300

1350

1400

1450

1500

1530

CCS(MPa)

A Axis

18

22

20

22.5

23

24

25

B

Axis

4

5

5.5

8

9

10.5

5.5

Pefractoriness(oc)

1500

1550

1710

1750

1790

1800

1800