Ceramics Products
Spherical Alumina
Boratherm™ SA
Spherical Alumina powders are used in the manufacturing process of thermal management products, which are relied on to regulate the temperature of electronic systems and devices.
These include:
- Thermally Conductive Plastics used in hardware and made by adding conductive fillers to polymers through a compounding process. Applications: automotive and aerospace parts, healthcare equipment, and electrical and electronic parts such as mounting devices, heat sinks, and cooling systems.
- Thermal Interface Materials (TIMs) inserted between components to support thermal conduction in pads, tapes, and epoxies.
- Base materials for hardware, software, and printed circuit boards to support thermal dissipation and control.
Features and Benefits
- Spherical shape enables low viscosity
- Narrow particle size distribution
- Low density
- Thermal conductor
- Electrical Insulator
Granulometric Data & Physical Characteristics (Regular Soda Grades)
Mean values. These do not represent a specification.
| Size | SA0050N | SA0080N | SA-0200N | SA0400N | SA0600N | Method | ||
|---|---|---|---|---|---|---|---|---|
|
% Passing on Ind. Sieve |
<2μm |
14.58 |
13.36 |
6.23 |
2.13 |
2.10 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<5μm |
34.87 |
29.18 |
7.35 |
2.13 |
2.13 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<8μm |
61.57 |
52.41 |
13.55 |
2.13 |
2.55 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<12μm |
82.67 |
74.58 |
25.04 |
2.54 |
2.76 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<25μm |
99.81 |
98.47 |
64.14 |
8.60 |
6.00 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<45μm |
100.0 |
100.0 |
92.68 |
65.8 |
22.5 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<75μm |
100.0 |
100.0 |
100.0 |
98.7 |
70.8 |
% |
CILAS Laser |
|
Particle Size |
D10 |
0.97 |
1.05 |
6.47 |
25.71 |
32.18 |
μm |
CILAS Laser |
|
Particle Size |
D50 |
6.57 |
7.66 |
19.55 |
36.69 |
62.26 |
μm |
CILAS Laser |
|
Particle Size |
D90 |
14.28 |
16.95 |
42.02 |
59.24 |
92.89 |
μm |
CILAS Laser |
|
Moisture Content |
|
0.03 |
0.06 |
0.03 |
0.03 |
0.02 |
wt.% |
105°C oven |
|
pH Value |
|
7.68 |
7.51 |
6.94 |
10.43 |
9.69 |
– |
pH meter |
|
Specific Gravity |
|
3.90 |
3.90 |
3.90 |
3.90 |
3.90 |
– |
pycnometer |
|
Electrical Conductivity |
|
60.17 |
56.67 |
30.09 |
140.50 |
120.83 |
μs/cm |
E.C meter |
CHEMICAL ANALYSIS (XRF)
Mean values. These do not represent a specification.
| SA0050N | SA0080N | SA-0200N | SA0400N | SA0600N | Method | ||
|---|---|---|---|---|---|---|---|
|
SiO2 |
0.11 |
0.14 |
0.12 |
0.13 |
0.06 |
% |
XRF |
|
Al2O3 |
99.61 |
99.58 |
99.50 |
99.56 |
99.75 |
% |
XRF |
|
Fe2O3 |
0.03 |
0.03 |
0.04 |
0.02 |
0.02 |
% |
XRF |
|
Na2O |
0.21 |
0.19 |
0.17 |
0.16 |
0.08 |
% |
XRF |
GRANULOMETRIC DATA & PHYSICAL CHARACTERISTICS (LOW SODA GRADES)
Mean values. These do not represent a specification.
| Size | SA0050 | SA0080 | SA0380 | SA0700 | Method | ||
|---|---|---|---|---|---|---|---|
|
% Passing on Ind. Sieve |
<2μm |
15.46 |
11.15 |
3.27 |
2.04 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<5μm |
43.71 |
21.22 |
3.48 |
2.20 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<8μm |
70.54 |
40.29 |
4.50 |
2.81 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<12μm |
85.78 |
59.80 |
6.34 |
3.58 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<25μm |
99.77 |
95.43 |
13.11 |
6.34 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<45μm |
100.0 |
100.0 |
52.8 |
21.9 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<75μm |
100.0 |
100.0 |
94.2 |
63.9 |
% |
CILAS Laser |
|
Particle Size |
D10 |
0.85 |
1.47 |
20.77 |
32.11 |
μm |
CILAS Laser |
|
Particle Size |
D50 |
5.53 |
9.83 |
43.82 |
65.5 |
μm |
CILAS Laser |
|
Particle Size |
D90 |
13.68 |
21.41 |
68.61 |
101.6 |
μm |
CILAS Laser |
|
Moisture Content |
|
0.03 |
0.01 |
0.03 |
0.01 |
wt.% |
105°C oven |
|
pH Value |
|
7.36 |
7.45 |
7.79 |
7.25 |
– |
pH meter |
|
Specific Gravity |
|
3.90 |
3.90 |
3.90 |
3.90 |
– |
pycnometer |
|
Electrical Conductivity |
|
56.7 |
15.4 |
15.1 |
7.45 |
μs/cm |
E.C meter |
CHEMICAL ANALYSIS (XRF)
Mean values. These do not represent a specification.
| SA0050 | SA0080 | SA0380 | SA0700 | Method | ||
|---|---|---|---|---|---|---|
|
SiO2 |
0.06 |
0.08 |
0.09 |
0.16 |
% |
XRF |
|
Al2O3 |
99.7 |
99.8 |
99.7 |
99.8 |
% |
XRF |
|
Fe2O3 |
0.03 |
0.03 |
0.04 |
0.04 |
% |
XRF |
|
Na2O |
0.03 |
0.03 |
0.03 |
0.03 |
% |
XRF |
Granulometric Data & Physical Characteristics (Washed Grades)
Mean values. These do not represent a specification.
| Size | SA-0020W | SA-0050W | SA-0080W | SA-0200W | Unit | Method | |
|---|---|---|---|---|---|---|---|
|
% Passing on Ind. Sieve |
<2μm |
5.86 |
0.85 |
0.44 |
5.98 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<5μm |
1.77 |
4.83 |
2.58 |
7.04 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<8μm |
0.05 |
2.50 |
3.53 |
12.64 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<12μm |
0.00 |
2.03 |
3.76 |
23.27 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<25μm |
0.00 |
0.00 |
1.20 |
61.13 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<45μm |
0.00 |
0.00 |
0.00 |
92.63 |
% |
CILAS Laser |
|
% Passing on Ind. Sieve |
<75μm |
0.00 |
0.00 |
0.00 |
100.0 |
% |
CILAS Laser |
|
Particle Size |
D10 |
0.21 |
0.71 |
1.13 |
6.76 |
μm |
CILAS Laser |
|
Particle Size |
D50 |
1.89 |
4.45 |
8.04 |
20.57 |
μm |
CILAS Laser |
|
Particle Size |
D90 |
3.73 |
11.89 |
18.23 |
42.25 |
μm |
CILAS Laser |
|
Particle Size |
D100 |
8.00 |
23.00 |
36.00 |
71.00 |
μm |
CILAS Laser |
|
Moisture Content |
|
0.01 |
0.01 |
0.01 |
0.03 |
% |
105°C oven |
|
pH Value |
|
5.71 |
6.14 |
6.50 |
8.01 |
– |
pH meter |
|
Specific Gravity |
|
3.90 |
3.90 |
3.90 |
3.90 |
– |
pycnometer |
|
Electrical Conductivity |
|
2.70 |
1.91 |
2.21 |
1.89 |
μs/cm |
E.C meter |
CHEMICAL ANALYSIS (XRF)
Mean values. These do not represent a specification.
| SA-0020W | SA-0050W | SA-0080W | SA-0200W | Unit | Method | |
|---|---|---|---|---|---|---|
|
SiO2 |
0.04 |
0.13 |
0.16 |
0.10 |
% |
XRF |
|
Al2O3 |
99.38 |
99.71 |
99.65 |
99.61 |
% |
XRF |
|
Fe2O3 |
0.09 |
0.04 |
0.03 |
0.04 |
% |
XRF |
|
Na2O |
0.08 |
0.03 |
0.03 |
0.13 |
% |
XRF |
Potential Applications
- Thermal adhesives
- Gap pads
- Gap fillers
- Thermally conductive plastics
Download the product datasheet
