Common

Standard

Pure

High aluminium

Zirconium

Classification temperature(℃) 

 1100

1260

1260

1360

1430

Work temperature(℃) 

 ≤1000

1050

1100

1200

1350

Color

White

Pure white

Pure white

Pure white

Pure white

Density(kg/m3) 

 260
320

 260
320

 260
320

 260
320  

 260
320

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

 -4
(1000℃)

 -3
(1000℃)

 -3
(1100℃)

 -3
(1200℃)

-3
(1350℃)

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

 0.085(400℃)
0.132(800℃)
0.180(1000℃)

 0.085(400℃)
0.132(800℃)
0.180(1000℃)

 0.085(400℃)
0.132(800℃)
0.180(1000℃)

 0.085(400℃)
0.132(800℃)
0.180(1000℃)

0.085(400℃)
0.132(800℃)
0.180(1000℃)

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*20-50
others up to buyer