Insulating Fire Brick

Index /brand

RS-23

RS-26

RS-28

RS-30

RS-32

Classification temperature                  °C

1260

1430

1540

1650

1760

Bulk density                           kg/m3

580

800

890

1030

1250

Moudulus of rupture                MPa

0.9

1.5

1.6

1.7

2.0

Cold crushing strength             MPa

1.2

2.4

2.6

2.8

3.4

Permanent Liner Change             %  °CxHr

-0.1

-0.5

-0.8

-0.9

-0.9

1230X24

1400x24

1510x24

1620x24

1730x24

Thermal expansion coefficient      (1100°C）%

0.45

0.50

0.55

0.60

0.65

Thermal conductivity

(W/m.k)

             400°C

0.17

0.24

0.30

0.40

0.49

             600°C

0.19

0.27

0.32

0.42

0.50

     800°C

0.22

0.30

0.35

0.44

0.51

     1000°C

0.25

0.32

0.38

0.45

0.53

            1200°C

0.35

0.39

0.47

0.55

Al2O3                                          %

45

50

64

72

76

Fe2O3                                         %

0.9

0.8

0.7

0.5

0.4

SiO2                                           %

50

43

33

26

0.4

TiO2                                           %

1.2

1.3

0.9

0.5

0.3

CaO+ MgO                                  %

0.7

0.6

0.4

0.3

0.2

K2O+ Na2O                                 %

1.3

1.1

0.8

0.2

0.1