As Fired Al2O3 Aluminum Oxide Ceramic Plate Bare Alumina Substrate
Product Introduction
Alumina ceramic is a ceramic substrate material with good
comprehensive performance, accounting for 80% of the total ceramic
substrate materials, and is generally used in automotive electronics,
semiconductor lighting, electrical equipment and other fields.
Advantages of Alumina Ceramic Substrates
1. High Wear & Chemical Resistance.
2. Heat Resistant.
3. High Mechanical Strength.
4. Small Dielectric Loss.
5. Low Coefficient of Thermal Expansion (CTE).
6. High Light Reflection.
7. 0% Water Absorption
Applications
Manufacturing Capacity
1. Product Specification
Products of various specifications can be produced. The table below shows our standard thicknesses and sizes.
Alumina Ceramic Substrate |
99.6% Al2O3 |
Thickness (mm) |
Maximum Size (mm) |
Shape |
Molding Technique |
As Fired |
Lapped |
Polished |
Rectangular |
Square |
Round |
0.1-0.2 |
|
50.8 |
50.8 |
|
√ |
√ |
Tape Casting |
0.25 |
|
114.3 |
114.3 |
|
√ |
|
Tape Casting |
0.38 |
120 |
114.3 |
114.3 |
|
√ |
|
Tape Casting |
0.5 |
120 |
114.3 |
114.3 |
|
√ |
|
Tape Casting |
0.635 |
120 |
114.3 |
114.3 |
|
√ |
|
Tape Casting |
Other special thicknesses within the thickness range of 0.1-0.635mm can be achieved by lapping. |
96% Al2O3 |
Thickness (mm) |
Maximum Size (mm) |
Shape |
Molding Technique |
As Fired |
Lapped |
Polished |
Rectangular |
Square |
Round |
0.25 |
120 |
114.3 |
114.3 |
|
√ |
|
Tape Casting |
0.3 |
120 |
114.3 |
114.3 |
|
√ |
|
Tape Casting |
0.38 |
140×190 |
|
|
√ |
|
|
Tape Casting |
0.5 |
140×190 |
|
|
√ |
|
|
Tape Casting |
0.635 |
140×190 |
|
|
√ |
|
|
Tape Casting |
0.76 |
130×140 |
|
|
√ |
|
|
Tape Casting |
0.8 |
130×140 |
|
|
√ |
|
|
Tape Casting |
0.89 |
130×140 |
|
|
√ |
|
|
Tape Casting |
1 |
280×240 |
|
|
√ |
|
|
Tape Casting |
1.5 |
165×210 |
|
|
√ |
|
|
Tape Casting |
2 |
500×500 |
|
|
√ |
|
|
Tape Casting |
Other special thicknesses within the thickness range of 0.1-2.0mm can be achieved by lapping. |
2. Material Properties
Alumina Ceramic Substrate |
Item |
Unit |
96% Al2O3 |
99.6% Al2O3 |
Mechanical Properties |
Color |
/ |
/ |
White |
Ivory |
Density |
Drainage Method |
g/cm3 |
≥3.70 |
≥3.95 |
Light Reflectivity |
400nm/1mm |
% |
94 |
83 |
Flexural Strength |
Three Point Bending |
MPa |
>350 |
>500 |
Fracture Toughness |
Indentation Method |
MPa·m1/2 |
3.0 |
3.0 |
Vickers Hardness |
Load 4.9N |
GPa |
14 |
16 |
Young's Modulus |
Stretching Method |
GPa |
340 |
300 |
Water Absorption |
|
% |
0 |
0 |
Camber |
/ |
Length‰ |
T≤0.3: ≤5‰, Others: ≤3‰ |
≤3‰ |
Thermal Properties |
Max. Service Temperature (Non-loading) |
/ |
ºC |
1200 |
1400 |
CTE (Coefficient of Thermal Expansion) |
20-800ºC |
1×10-6/ºC |
7.8 |
7.9 |
Thermal Conductivity |
25ºC |
W/m·K |
>24 |
>29 |
Thermal Shock Resistance |
800ºC |
≥10 Times |
No Crack |
No Crack |
Specific Heat |
25ºC |
J/kg·k |
750 |
780 |
Electrical Properties |
Dielectric Constant |
25ºC, 1MHz |
/ |
9.4 |
9.8 |
Dielectric Loss Angle |
25ºC, 1MHz |
×10-4 |
≤3 |
≤2 |
Volume Resistivity |
25ºC |
Ω·cm |
≥1014 |
≥1014 |
Dielectric Strength |
DC |
KV/mm |
≥15 |
≥15 |
Product Inspection
Jinghui Industry Ltd. is dedicated to producing high quality products. We do our best to ensure that any substrates supplied by Jinghui Industry Ltd. fully meet your performance expectations.