Alumina
|
Alumina |
Designation |
A-96 |
V-100 |
|
% Alumina
|
% Al2O3
|
96
|
99.9
|
|
|
|
|
|
|
Color
|
|
White or Pink
|
Cream - White
|
|
Hardness
|
Mohs
|
9
|
9
|
|
Water Absorption
|
%
|
Impervious
|
Impervious
|
|
Specific Gravity
|
|
3.65
|
3.92
|
|
Grain size
|
Micron (fired)
|
5-25
|
3-10
|
|
|
|
|
|
|
Tensile Strength
|
PSI
|
19,000
|
25,000
|
|
Compressive Strength
|
PSI
|
300,000
|
375,000
|
|
Flexural Strength
|
PSI
|
45,000
|
45,000
|
|
|
|
|
|
|
Maximum Operating Temperature Under Non Loading Conditions
|
°C
|
1,700
|
1,675
|
|
°F
|
3,100
|
3,050
|
|
|
Linear Coefficient of Thermal Expansion:
|
(@ 25 °C - 100 °C) x 10-6/°C
|
6.4
|
6.4
|
|
(@ 25°C - 600 °C) x 10-6/°C
|
7.5
|
8.0
|
|
|
|
|
|
|
|
Dielectric Strength (1/4" thick)
|
VOLTS/MIL
|
220
|
230
|
|
Dielectric Constant
|
At 25 °C & 1 mhz
|
9.3
|
9.8
|
|
Loss Factor
|
At 25 °C & 1 mhz
|
.006
|
.003
|
|
|
|
|
|
|
Te Value
|
Temp °C @ which one cm3 of material has a mega ohm of resistance
|
840
|
1050
|
NOTE: THE INFORMATION IN THIS DATA SHEET IS FOR DESIGN PURPOSES ONLY. ACI DOES NOT WARRANT THIS DATA AS ABSOLUTE VALUES. FORMING METHODS AND SPECIFIC GEOMETRY COULD AFFECT PROPERTIES. PLEASE CONTACT OUR ENGINEERING STAFF IF YOU HAVE ANY QUESTIONS OR FOR MORE INFORMATION
