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Custom Alumina Ceramic Insulation Gaskets Wear Resistant Ceramic Sheet

Alumina ceramics have the following characteristics:
  • Very good electrical insulation.
  • Moderate to extremely high mechanical strength.
  • Very high compressive strength.
  • High hardness.
  • Moderate thermal conductivity.
  • High corrosion and wear resistance.
  • Good gliding properties.
  • Low density.
  • Operating temperature without mechanical load 1,000 to 1,700°C.
  • Bioinert and food compatible.
Availability:
Quantity:
  • 01015

  • HaoRui

  • custom 01015

The Most Well-known Oxide Ceramic Material



Aluminum Oxide (Al2O3)


Alumina ceramic is a kind of ceramic material based on alumina (Al2O3). Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic washing is required. Alumina ceramics is a kind of widely used ceramics, because of its superior performance, in modern society has been more and more widely used to meet the needs of daily use and special properties.

Alumina based ceramics are by far the largest range of advanced ceramics made by HaoRui.HaoRui offers a wide range of material types with different property profiles that can be adjusted via a targeted matrix design.


Properties of Alumina/Aluminum Oxide (Al2O3)


  • Very good electrical insulation.

  • Moderate to extremely high mechanical strength.

  • Very high compressive strength.

  • High hardness.

  • Moderate thermal conductivity.

  • High corrosion and wear resistance.

  • Good gliding properties.

  • Low density.

  • Operating temperature without mechanical load 1,000 to 1,700°C.

  • Bioinert and food compatible.



Property
Item
95% Al2O3
99% Al2O3
99.8%Al2O3
Unit
Mechanical Characteristics
Color
White
light yellow
Ivory

Bulk Density
3.7
3.85
3.93
g/cm3
Water Absorption
0
0
0
%
Bending Strength
300
310
370
MPa
Compressive Trength
2,300
2,400
2500
MPa
Elastic Modulus
320
340
390
GPa
Fracture Toughness
3~4
3~4
4
MPa m1/2
Weber Coefficient
12
12
12
m
Vickers Hardness
1,400
1,600
1850
HV 0.5
Thermal Characterics
Coefficient of Line Thermal
Expansion
7~8
7~8
7~8
10-6 K-1
Thermal Conductivity
20
29
32
W/mK
Thermal Shock Resistance
(Put in Water)
250
200
280
ΔT °C
Max Working Temperature
1,500
1,600
1700
°C
Electrical Characteristics
Volume Resistance At 20°C
>1014
>1014
>1014
Ωcm
Dielectric Strength
15×106
15×106
15×106
V/m
Dielectric Constant
9
10
10
εr
One MHZ Dielectric Loss Angle
at 20°C
0.0004
0.0002
0.0001
tanδ
Chemical Characteristics
Nitric Acid (60%) 90°C
0.1
0.1
0.05
24H WT Loss mg/cm2
Sulphuric Acid (95%) 95°C
0.3
0.34
0.22
Caustic Soda (30%) 80°C
0.9
0.95
0.04





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