Technical Products, Inc.
P: 262-335-3635 | F: 262-335-3606
E: tpi@technicalproductsinc.com
www.technicalproductsinc.com
High Purity (AL2O3) Alumina Material Specifications
Alumina Oxide (AL2O3) is a readily available material with reasonable processing cost,
possessing excellent mechanical, electrical, and wear properties. Our fabricated Alumina is
used in a wide range of applications not limited to aerospace, automotive, medical and
military.
Technical Products processes include cold isotactic pressing of green billets, pre-fired
machining, sintering, and post sintered grinding operations.
Physical Properties
Bulk Density
Color
Water Absorption
Hardness (Rockwell 45 N)
Grain Size
Units
g/cm³
%
Microns
AL2O3-96%
3.72
white
0
78
6
AL2O3-99.8%
3.9
ivory
0
83
6
AL2O3-99.9%
3.93
ivory
0
86
3
Mechanical Properties
Compressive Strength
Modulus of Elasticity
Flexural Strength
Poisson's Ratio
Fracture Toughness
Gas Permeation
Units
MPa
GPa / psi • 106
MPa /psi • 103
MPa m1/2
%
AL2O3-96%
2100
303 / 44
358 / 52
0.21
4–5
0
AL2O3-99.8%
2300
370 / 54
375 / 54
0.22
4-5
0
AL2O3-99.9%
2600
393 / 57
400 / 58
0.22
5
0
Thermal Properties
Max. Use Temperature (no load)
Thermal Conductivity
Thermal Expansion 20ºC – 1000ºC
Specific Heat
Units
ºC / ºF
W/mK
10-6 /ºC
J/kg*K
AL2O3-96%
1600 / 2912
24.7
8.2
880
AL2O3-99.8%
1700 / 3092
30
8.2
880
AL2O3-99.9%
1700 / 3092
35
8.2
870
Electrical Properties
Dielectric Constant
Dielectric Strength
Units
ac V/mils
AL2O3-96%
9
210
AL2O3-99.8%
9.8
220
AL2O3-99.9%
9.7
230
**The information provided in this table is a compilation of publicly available data. This information is provided for comparison purposes only,
and is not intended to be warrantable. Further, Technical Products, Inc. disclaims any and all liability from errors, in accuracies, or omissions.
Technical Products, Inc. PO Box 189 Hubertus, WI 53033
P: 262-335-3635 | F: 262-335-3606 | tpi@technicalproductsinc.com | www.technicalproductsinc.com