|
|
MATERIAL PROPERTY CHART
| |
STEATITE |
CORDERITE |
| Property |
Unit |
MC-L3
High strength with good electrical properties. |
MC-C
Excellent resistance to thermal shock with relatively low porosity. |
| Water Absorption |
% |
0 impervious |
0-1 |
| Specific Gravity |
|
2.5 |
2.3 |
| Color |
|
White |
Gray - white |
| Safe temp. at continuous heat |
F° |
1870° |
2120° |
Hardness
MOH's Scale |
|
7.5 |
7 |
| Coeficient of thermal exp. |
per °C (25-900°C) |
 |
 |
| Tensile strength |
 |
8,500 |
3,100 |
| Flexural strength |
|
18,000 |
15,000 |
| Compressive strength |
|
80,000 |
50,000 |
| Dielectric strength |
Volts per mil |
225 |
200 |
| Dieletric constant at 1 megacycle/sec. |
|
5.9 |
5.3 |
| Loss factor at 1 megacycle/sec. |
|
0.021 |
0.025 |
| Resistence to impact |
in-lbs. |
4.5 |
4 |
LASER FLASH THERMAL CONDUCTIVITY RESULTS
|
|
bulk density |
temperature |
temperature |
specific heat |
diffusivity |
conductivity |
|
p@25°C |
|
|
Cp |
 |
 |
| Sample |
(g/cm³) |
(°C) |
(°F) |
(J/gK) |
(cm²/s) |
(W/mK) |
|
L-3 Steatite |
2.19 |
1204 |
2200 |
1.53 |
0.00638 |
2.14 |
Grade A Lava-
Hard |
2.38 |
1204 |
2200 |
1.42 |
0.00687 |
2.32 |
Grade A Lava-
Req. |
2.31 |
1093 |
2000 |
1.39 |
0.00619 |
1.98 |
|
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