Common

Standard

Pure

High aluminium

Zirconium

Classifition temperature(°C) 

 1100

1260

1260

1360

1430

Work temperature(°C) 

 ≤1000

1050

1100

1200

1350

Color

White

Pure white

Pure white

Pure white

Pure white

Density(kg/m3) 

 260320

 260320

 260320

 260320  

 260320

Permanent linear shrinkage(%)(after24hours，density320kg/m3) 

 -4(1000°C)

 -3(1000°C)

 -3(1100°C)

 -3(1200°C)

-3(1350°C)

Thermal conductivity(w/m.k) density285kg/m3)

 0.085(400°C)0.132(800°C)0.180(1000°C)

 0.085(400°C)0.132(800°C)0.180(1000°C)

 0.085(400°C)0.132(800°C)0.180(1000°C)

 0.085(400°C)0.132(800°C)0.180(1000°C)

0.085(400°C)0.132(800°C)0.180(1000°C)

Compressive strength(Mpa)(thermal shrinkage 10%) 

 0.5

 0.5

 0.5

 0.5

0.5

Chemical composition(%)

 AL2O3

 44

46

47-49

52-55

39-40

 AL2O3+SIO2

 96

97

99

99

-

 AL2O3+SIO2+Zro2

 -

-

-

-

99

 Zro2

 -

-

-

-

15-17

Fe2O3

<1.2 

<1.0

0.2

0.2

0.2

 Na2O+K2O

  ≤0.5

  ≤0.5

 0.2

 0.2

0.2

  Size(mm)

   Common-600*400*10-5,900*600*20-50others up to buyer