Item:

Common

Standard

High pure

High alumina

Zirconium

Classification temp℃

1100

1260

1260

1360

1430

Working temp℃

< 1000

1050

1100

1200

1350

Color

white

Pure white

Pure white

Pure white

Pure white

Bulk density (kg/m3)

260
320

260
320

260
320

260
320

260
320

Permanent linear shrinkage(%)

(After 24 hours，density 320kg/m3)

－4
(1000℃)

－3
(1000℃)

－3
(1100℃)

－3
(1250℃)

-3
(1350℃）

Thermal conductivity (w/m.k)

(density 285kg/m3)

0.085(400℃)

0.132(800℃)

0.18(1000℃)

0.085(400℃)

0.132(800℃)

0.18(1000℃)

0.085(400℃)

0.132(800℃)

0.18(1000℃)

0.085(400℃)

0.132(800℃)

0.18(1000℃)

0.085(400℃)

0.132(800℃)

0.18(1000℃)

Tensile 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：

600×400×10-50, 900×600×20-50 or according to buyer’s requirement