Type

 Performance

Alumina porcelain

Mullite porcelain

Dense cordierite porcelain

Loose cordierite

porcelain

Mullite cordierite porcelain

Stoneware porcelain

Chemical composition

AL₂O₃

48-55

66-72

32-36

32-37

55-65

20-26

SiO₃

40-45

25-30

45-52

46-52

28-36

68-75

MgO

5-8

8-12

2.5-3.2

0.2-0.3

K₂O+Na₂O+CaO

4.0-5.5

≤1.0

≤3.0

≤2.0

≤1.0

2.5-4.0

Density       g/cm³

2.7

2.9

2.4-2.6

1.9-2.0

2.9-3.2

2.3-2.5

Coefficient of thermal expansion

(20-100°C)*10-6·°C

5-7

5.5-6.5

2.5-3.5

1.3-2.5

2.5-4.0

5-7

Calorific capacity(20-1000°C).J/kg·°C

800-900

1100-1300

800-1200

750-900

850-1100

840-920

Thermal conductivity

(20-1000°C)W/m·°C

1.5-2.5

1.5-2.0

1.5-2.58

1.3-1.5

1.5-2.3

1.0-1.2

Thermal shock resistance °C

≥150

≥350

≥250

≥360

≥250

≥150

Max working temperature °C

1300

1600

1300

1300

1400

1300

                             Type  

                                    Item

1

2

3

4

5

6

End hole number

5*5

13*13

20*20

25*25

40*40

50*50

Hole density                    cm^-2

0.15

1

2

3

7

11

Aperture                      mm

26.3

9.2

6.4

4.9

3.0

2.3

Thickness                     mm

2

1.5

1.2

1.0

0.7

0.7

Surface area                  m²/m³

117

278

455

540

825

1005

Opening rate                    %

77

74

73

67

65

57

Size                          mm

Standard: 150*150*600/450/300/150/100/50

Other: 100*100*100/40