Industrial Ceramic Products
Industrial Ceramic Products Datasheet
REV.2017-1
|
Material |
Alumina |
Magnesium Oxide |
Mullite |
||||
|
Properties |
Units |
AL995 |
AL99 |
AL95 |
AL60 |
MgO |
---- |
|
Ingredient |
---- |
99.50% |
99.00% |
95% |
60% |
---- |
---- |
|
Color |
---- |
Ivory |
Ivory |
Ivory &White |
White |
White |
White |
|
Permeability |
---- |
Gas-tight |
Gas-tight |
Gas-tight |
Gas-tight |
Gas-tight |
Gas-tight |
|
Density |
g/cm3 |
3.9 |
3.8 |
3.75 |
3 |
3.58 |
2.6 |
|
Hardness |
Mohs Scale |
9 |
9 |
8.8 |
7.5 |
6 |
8 |
|
Water Absorption |
---- |
≤0.2% |
≤0.2% |
≤0.2% |
≤0.2% |
0 |
0 |
|
Flexural Strength (Typical 20℃) |
MPa |
370 |
340 |
304 |
205 |
140 |
120 |
|
Compressive Strength (Typical 20℃) |
MPa |
2300 |
2210 |
1910 |
1820 |
550 |
500 |
|
C.T.E. (25℃ to 800℃) |
10-8/℃ |
7.6 |
7.6 |
7.6 |
7.1 |
13 |
5.6 |
|
Dielectric Strength (5mm Thickness) |
AC-kv/mm |
10 |
10 |
10 |
9 |
---- |
10.2 |
|
Dielectric Loss 25℃@1MHz |
---- |
＜0.0001 |
0.0006 |
0.0004 |
0.0007 |
---- |
0.002 |
|
Dielectric Constant |
25℃@1MHz |
9.7 |
9.5 |
9.2 |
8.6 |
---- |
6 |
|
Volume Resistivity （20℃） （300℃） |
Ω·cm2 |
＞1014 2*1012 |
＞1014 4*1011 |
＞1014 2*1011 |
＞1014 ＞1013 |
＞1014 ---- |
＞1014 5*1012 |
|
Long-term operating temperature |
℃ |
1650 |
1600 |
1400 |
1100 |
2300 |
1550 |
|
Thermal Conductivity（25℃） |
W/m·K |
35 |
34 |
20 |
16 |
36 |
3.6 |
