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  • Alumina ceramic ring
  • Alumina ceramic ring
  • Alumina ceramic ring
  • Alumina ceramic ring
Alumina ceramic ring Alumina ceramic ring Alumina ceramic ring Alumina ceramic ring

Alumina ceramic ring

  • Product No.:ALC 20180804
  • Type:Alumina ceramic
  • Feature:High temperature/corrosion resistance
  • Material:99.8% alumina ceramic
  • Colour:Ivory white
  • Production Process:Dry pressing / high temperature sintering / precision machining / surface polishing
  • Detail:Used for equipment parts, solar parts, semiconductor parts.
  • MOQ:5pcs
  • Brand:Seamark ceramic
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Alumina Ceramic (Aluminum Oxide)Description:

Alumina is a ceramic material with high thermal conductivity, compressive strength, and thermal shock resistance. It also has a low thermal expansion, making it a suitable material for furnace use in crucible, tube, and thermocouple sheath form.

 Alumina is high hardness and good wear resistance, making it a suitable material for ball valves, piston pumps, and deep drawing tools. In addition, it can be easily combined with metals and other ceramic materials using brazing techniques and metallizing.

Alumina crucibles can be used under high temperature and do not contaminate most melten metals.

 

Alumina Ceramic Applications:

• Used for equipment parts, solar parts, semiconductor parts.

• In traditional industries, alumina ceramics are ideal for products such as injector tubes, gas nozzles and insulators.

• Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures.

• Used as protector for high temperature thermal couples.

• Used as a material for chemical industry due to its high corrosion resistance.

Typical properties for common materials of alumina plates

Composition

UNIT

Alumina 95%

Alumina 99.5%

Alumina 99.8%

AL2O3  content

%

96

99.5

99.8

Color

 

White

Ivory

Ivory

Tensile strength

Kpsi

32

38

36

Flexural strength

Kpsi

52

55

54

Compressive strength

Kpsi

300

377

350

Density

g/cc

3.70

3.90

3.92

Hardness

HV, GPa

13.8

17.2

18

Thermal Conductivity

W/(m K)

25

30

30

Coefficient of thermal expansion

In / In°C (x10^-6)

7.7

7.8

7.8

Working temperature

°C

1500

1650

1750

Dielectric Constant

 

9.5

9.7

9.8

Volume Resistivity (25°C)

Ohm-cm

>10^14

>10^14

>10^14


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