|
| Main property |
XJM23 |
XJM26 |
XJM28 |
| Temperature ¡æ |
1260 |
1427 |
1538 |
| Bulk density Kg/m3 |
500 |
780 |
880 |
| Bending strength MPa |
0.8 |
1.8 |
2.7 |
| Cold crushing strength MPa |
1.2 |
2.3 |
4.1 |
| Linear change after heating % |
-0.1 |
-0.4 |
-1 |
| At temperature keeping 12hrs |
1230 |
1400 |
1510 |
| Thermai expansion |
5 |
5.4 |
5.7 |
| Creep,after 90 minuters |
|
|
|
| 1100¡æ,0.034MPa % |
0.3 |
|
|
| 1260¡æ,0.069MPa % |
|
0.4 |
|
| 1320¡æ,0.069MPa % |
|
|
0.3 |
| Thermal conductivity average temperature |
|
|
|
| 200¡æ W/m.k |
0.15 |
0.28 |
0.32 |
| 400¡æ W/m.k |
0.18 |
0.29 |
0.33 |
| 600¡æ W/m.k |
0.22 |
0.32 |
0.34 |
| 800¡æ W/m.k |
0.27 |
0.35 |
0.37 |
| 1000¡æ W/m.k |
0.32 |
0.39 |
0.41 |
| 1200¡æ W/m.k |
0.38 |
0.43 |
0.46 |
| 1400¡æ W/m.k |
|
0.47 |
0.5 |
| Chemical composition |
|
|
|
| Al2O3 % |
45 |
60 |
66 |
| SiO2 % |
48 |
37 |
32 |
| Fe2O3 % |
0.8 |
0.7 |
0.6 | |
|
