96% 99.6% Bespoke High Purity Alumina Ceramic Sheet Pink Substrate
Product Introduction
The pink alumina ceramic substrate is to add Cr2O3 into Al2O3
ceramics, because the Cr3+ ions in the solid solution α-Al2O3 lattice
have a strong selective absorption of the blue-green color of visible
light, showing a blue-green complementary color, that is, pink.
Features of Our Pink Alumina Ceramic Substrates
(1) Good insulation performance and high reliability.
(2) Low dielectric coefficient and good high frequency
performance.
(3) Low thermal expansion coefficient (CTE) and high thermal
conductivity.
(4) Good air tightness, stable chemical properties, and strong
protection for electronic systems.
Product Parameters
Our pink alumina ceramic substrates are generally made of 96% or 99.6% alumina. For material properties, please refer to the table below.
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 |
Applications
Production Process
Why Choose Us?
1. Our bare ceramic substrates are available in a wide variety of standard and custom thickness, shape, and size.
2. For products that require high dimensional accuracy, we can use various processing methods to process ceramic substrates, such as lapping, polishing, laser scribing, laser cutting, etc.
Our Manufacturing Capacity
1. Product Specification
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. Product Tolerances
Alumina Ceramic Substrate |
Item |
Substrate Thickness (mm) |
Standard Tolerance (mm) |
Best Tolerance (mm) |
Laser Cutting Tolerance (mm) |
Length and Width Tolerance |
/ |
±2 |
|
±0.15 |
Thickness Tolerance |
T<0.3 |
±0.03 |
±0.01 |
|
0.30-1.0 |
±0.05 |
±0.01 |
|
T>1.0 |
±10% |
±0.01 |
|
3. Surface Roughness
Alumina Ceramic Substrate |
Material |
Surface Roughness (μm) |
As Fired |
Lapped |
Polished |
96% Al2O3 |
Ra 0.2-0.75 |
Ra 0.3-0.7 |
Ra ≤0.05 |
99.6% Al2O3 |
Ra 0.05-0.15 |
Ra 0.1-0.5 |
Ra ≤0.05 |
4. Laser Processing
(1) Hole Size
Alumina Ceramic Substrate |
Hole Diameter (mm) |
Standard Tolerance (mm) |
φ≤0.5 |
0.08 |
φ>0.5 |
0.2 |
(2) Laser Scribing
Alumina Ceramic Substrate |
Substrate Thickness (mm) |
the Percentage of Laser Scribe Line Depth to Thickness (%) |
0.2-0.3 |
40%±5% |
0.3<T≤0.5 |
50%±3% |
0.5<T≤1.0 |
43%±3% |
1.2 |
55%±3% |
1.5 |
55%±3% |
2.0 |
55%+10% |
The scribing spot can be in different sizes. Generally there are small spot 0.03-0.04mm (Substrate Thickness≤0.5mm ) and large spot 0.08-0.1mm (Substrate Thickness>0.5mm), and the accuracy is ±0.01mm. |