Alumina substrate

Dense sintered alumina 96% and 99,7%

Characteristics

  • Thickness: 0.15 - 0.25 - 0.38 - 0.5 - 0.63 - 0.76 - 1 - 1.27 - 1.52 - 2 mm
  • Formats: 50.8 x 50.8 to 168 x 168 mm

Properties

  • High corrosion resistance
  • High abrasion resistance
  • Good electrical isolation
  • Very good gliding properties
  • High planarity
  • Good thermal conductivity
  • Good mechanical strength 

Porous sintered alumina 99%

Characteristics

  • Thickness: 1 - 1.5 - 2 mm
  • Formats: 100 x 100 to 168 x 168 mm

Properties

  • High corrosion resistance
  • High abrasion resistance
  • Good electrical isolation
  • Very good gliding properties
  • Good mechanical strength
  • Gases can diffuse by the material
  • Weight of the individual plates is very light 

Applications

The porous alumina substrates are often used as sintering base with the thermal treatment of LTCC, piezo-ceramics, SOFC-electrolytes, dental ceramics and metallic materials to 1500°C.

Technical data

Properties

Al2O3 99

Al2O3 96

Al2O3 99 porosity 40%

Alumina

%

99

96

99

Color

/

White

White

White

Gross density

g/cm3

3,88

3,78

2,56

Surface roughness Rmax

µm

3

4

12

Surface roughness Ra

µm

0,2

0,5

0,7

Bending strength

N/mm²

500

400

~ 60

Thermal conductivity 

W/(K.m) 

25

24

 /

Dielectric strength

kV/mm

> 10

> 10

 /

Resistivity

Ohm.µm

10 14

10 12

 /