|
General Properties
|
Main Component Purity
|
wt％
|
－
|
－
|
－
|
－
|
－
|
99.5
|
99.99
|
－
|
|
Color
|
|
White
|
White
|
Gray
|
Gray
|
Light Gray
|
White
|
Transparent
|
－
|
|
Density
|
g/cm3
|
2.59
|
3.06
|
2.56
|
3.50
|
2.90
|
1.92
|
2.20
|
7.93
|
|
Water Absorption
|
%
|
0
|
0
|
0
|
0
|
0
|
－
|
0
|
0
|
Mechanical
Properties
|
Bending Strength
|
MPa
|
150
|
89
|
440
|
320
|
294
|
35
|
70
|
－
|
|
Young's Modulus
|
GPa
|
66
|
－
|
157
|
130
|
186
|
39
|
71
|
193
|
|
Vickers Hardness
|
GPa
|
2.2
|
1.2
|
2.3
|
2.3
|
3.8
|
－
|
9
|
2
|
|
Thermal Properties
|
Max.Operating Temperature
|
℃
|
1000
|
600
|
1000
In nonoxidizing
atomosphere
|
1000
In nonoxidizing
atomosphere
|
1900
In nonoxidizing
atomosphere
|
2200
In nonoxidizing
atomosphere
|
－
|
－
|
Coefficient of
Thermal
Expansion
|
RT～500℃
|
1/℃
(×10-6)
|
<RT～400℃>
|
<RT～400℃>
|
<RT～400℃>
|
<RT～150℃>
|
4.6
|
<RT～1000℃>
|
0.64
|
18.7
|
|
RT～800℃
|
8.5
|
6.1
|
1.4
|
4.7
|
5.1
|
0.86
|
－
|
－
|
Coefficient of Thermal
Conductivity
|
W/m・k
|
1.7
|
1.8
|
50
|
23
|
90
|
75
|
1.1
|
16.3
|
|
Thermal Shock Resistance
|
△T（℃）
|
150
|
200
|
600
|
400
|
400
|
1500
|
－
|
－
|
|
Electrical Properties
|
Volume
Resistivity
|
25℃
|
Ω･cm
|
1.8×1015
|
4.2×1015
|
2.2×1015
|
1015
|
1012
|
1014
|
＞1015
|
－
|
|
300℃
|
－
|
－
|
－
|
－
|
－
|
－
|
－
|
－
|
|
500℃
|
－
|
－
|
－
|
－
|
－
|
－
|
－
|
－
|
|
800℃
|
－
|
－
|
－
|
－
|
－
|
－
|
－
|
－
|
|
Dielectric Constant
|
10GHz
|
<100MHz>
6.1
|
－
|
<1GHz>
5.5
|
<1GHz>
9.0
|
<1MHz>
7.1
|
<1MHz>
3.5
|
－
|
－
|
|
Dielectric Loss
|
×10-4
|
－
|
－
|
<1GHz>
10
|
<1GHz>
25
|
－
|
－
|
－
|
－
|
|
Q Factor
|
1/tanδ
|
×104
|
－
|
－
|
<1GHz>
0.10
|
<1GHz>
0.04
|
－
|
－
|
－
|
－
|
|
Dielectric Breakdown Voltage
|
KV/mm
|
18
|
－
|
35
|
30
|
40
|
40
|
－
|
－
|
|
Main Charcteristice
|
Precision
Machinability
Electrical
insulation
Heat insulation
Quick delivery
|
Low thermal
expantion
High reflectance
|
High strength
Low thermal
expansion
Precision
Machinability
|
High strength
Thermal
expansion
similar to
silicon
Precision
Machinability
|
High thermal
conductivity
High strength
|
Thermal stability
Corrosion
resistance
Electrical
insulation
Precision
Machinability
|
High purity
Heat-resistant
Chemical-
resistant
|
|
|
Recommended Applications
|
Insulating parts
Heat-insulating
parts
Prototype/
emergency
parts
|
Insulating parts
Positioning jigs
Light-condensing
parts
|
Inspection
Insulating parts
Micromachine
parts
|
Inspection
Insulating parts
Micromachine
parts
|
Insulating parts
Radiators
|
Molten metalc
corrosion
resistance
material
Insulating parts
Precision
Machining Jigs
|
Semiconductor
manufacturing
jigs/parts
Heat-resistant
parts
|
|
