Ceramic products datasheet

REV.2017-1

 

Material

Alumina

Magnesium

Oxide

Mullite

Properties

Units

AL995

AL99

AL95

AL60

MgO

----

Ingredient

----

99.50%

99.00%

95%

60%

----

----

Color

----

Ivory

Ivory

Ivory &White

White

White

White

Permeability

----

Gas-tight

Gas-tight

Gas-tight

Gas-tight

Gas-tight

Gas-tight

Density

g/cm3

3.9

3.8

3.75

3

3.58

2.6

Hardness

Mohs Scale

9

9

8.8

7.5

6

8

Water Absorption

----

≤0.2%

≤0.2%

≤0.2%

≤0.2%

0

0

Flexural Strength

(Typical 20℃)

MPa

370

340

304

205

140

120

Compressive Strength

(Typical 20℃)

MPa

2300

2210

1910

1820

550

500

C.T.E.

(25℃to 800℃)

10-8/℃

7.6

7.6

7.6

7.1

13

5.6

Dielectric Strength

(5mm Thickness)

AC-kv/mm

10

10

10

9

----

10.2

Dielectric [email protected]

----

<0.0001

0.0006

0.0004

0.0007

----

0.002

Dielectric Constant

[email protected]

9.7

9.5

9.2

8.6

----

6

Volume Resistivity

(20℃)

(300℃)

 

Ω·cm2

 

>1014

2*1012

 

>1014

4*1011

 

>1014

2*1011

 

>1014

>1013

 

>1014

----

 

>1014

5*1012

Long-term operating temperature

1650

1600

1400

1100

2300

1550

Thermal Conductivity(25℃)

W/m·K

35

34

20

16

36

3.6

99 alumina ceramic materials is mainly used for the production of high temperature crucible, insulation pipe, refractory tube and special wear-resistant materials, such as ceramic bearings, ceramic seals and water valve etc.

95 alumina ceramic materials is mainly used for corrosion-resistant, wear-resistant parts.