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Overview
Lead Time
Material Requirements
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Material Requirements
Material Requirements
Property
Unit
A998
A96
A9468
A9968
MUL6
PSZ
Physical
Composition ¹
weight %
99.8 Al
2
O
3
95.9 Al
2
O
3
94 Al
2
O
3
99 Al
2
O
3
72 Al
2
O
3
5.4Y
2
O
3
Density ²
g/cm3
3.89
3.67
2.6
2.9
2.1
6
Porosity
volume %
Impervious
Impervious
»30%
»25%
»30%
Impervious
Color
Ivory
White
White
White
Tan
Off-White
Mechanical
Hardness
GPa (Knoop)
11.1
11.1
n/a
n/a
n/a
11.7
4-point Bend ³ Strength (MOR)
MPa
(ksi)
325
(47)
320
(46)
82
(12)
117
(17)
62
(9)
600
(87)
Thermal
Maximum Service Temperature
°C
1650
1550
1550
1550
1550
2200
Thermal Expansion
Coefficient
°C
-1
(25-700°C)
7.5 ´10
-6
7.2 ´10
-6
»7´10
-6
»7´10
-6
»5 ´10
-6
11.2 ´10
-6
Thermal Conductivity (20°C)
W/m·°K (Btu·in/ft2 ·hr·°F)
35
(242)
24
(167)
»15
(104)
»24
(166)
»4
(28)
»2
(14)
Electrical
Dielectric Strength
Volts/mil
200
210
n/a
n/a
n/a
51
Dielectric Constant
@1MHz @ 20°C
10.0
9.3
n/a
n/a
n/a
28.0
Volume Resistivity
Ohm·cm @ 25°C
Ohm·cm @ 300°C
Ohm·cm @ 500°C
10
14
2.5x10
11
5.5x10
8
>10
14
1.4x10
10
5.8x10
7
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
>10
13
n/a
4.8x10
3
¹ Controlled by the Batch Composition
² Measured by Pychnometer Immersion Technique
³ per ASTM C 1161 – 02c.
Rev 10/2006
© 2007 Ceramco Ceramics, Inc., all rights reserved.
P.O. Box 300, 1467 East Main Street, Center Conway, NH 03813
Tel: 603.447.2090 | Fax: 603.447.3906
