|
|
| Properties ＼ Diameter in φ |
Below 12 |
14-16 |
18-22 |
24-30 |
| R P |
H P |
R P |
H P |
R P |
H P |
R P |
H P |
| Bulk Density |
g/㎤ |
1.55-1.70 |
1.64-1.78 |
1.54-1.67 |
1.63-1.78 |
1.54-1.67 |
1.62-1.78 |
1.55-1.68 |
1.65-1.78 |
| Real Density |
g/㎤ |
2.20-2.24 |
2.21-2.24 |
2.21-2.24 |
2.22-2.25 |
2.21-2.24 |
2.22-2.25 |
2.21-2.24 |
2.22-2.25 |
| Porosity |
% |
23-31 |
20-27 |
24-31 |
20-28 |
24-31 |
20-28 |
24-31 |
20-27 |
| Specific Resist-ance |
μΩm |
6.5-9.5 |
3.5-6.5 |
5.0-8.0 |
3.5-6.5 |
5.0-8.0 |
4.0-6.5 |
5.0-8.0 |
4.0-6.5 |
| Bending Strength |
kgf/㎠ |
110-170 |
130-180 |
80-120 |
120-160 |
80-120 |
110-150 |
80-120 |
110-150 |
| young's Modules |
kgf/㎟ |
600-900 |
1000-1600 |
700-1000 |
1000-1500 |
700-1000 |
850-1400 |
700-1000 |
800-1400 |
Coeffic-ient of
Thermal Expans'n |
x10-6/°c |
0.5-3.3 |
0.5-3.3 |
0.5-1.0 |
0.5-1.0 |
0.5-1.0 |
0.3-1.0 |
0.5-1.0 |
0.3-1.0 |
| Ash Content |
% |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
* Coefficient of Thermal Expansion is measured at the temperature range of 100 ~ 200 C.
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