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Item: |
JM-23 |
JM-26 |
JM-28 |
JM-30 |
|
Classification temperature oC |
1260 |
1430 |
1540 |
1650 |
|
Bulk density g/cm3 |
0.6 |
0.8 |
0.9 |
1.0 |
|
Modulus of rupture MPa |
0.9 |
1.5 |
1.6 |
1.7 |
|
Cold crushing strength MPa |
1.2 |
2.4 |
2.6 |
2.8 |
|
Permanent linear change %, |
-0.1 |
-0.5 |
-0.8 |
-0.9 |
|
1230oC×24 |
1400oC×24 |
1510oC×24 |
1620oC×24 |
||
Thermal expansion coefficient |
0.45 |
0.50 |
0.55 |
0.60 |
|
Thermal conductivity W/m.k |
400.C |
0.17 |
0.24 |
0.30 |
0.40 |
600.C |
0.19 |
0.27 |
0.32 |
0.42 |
|
800.C |
0.22 |
0.30 |
0.35 |
0.44 |
|
1000.C |
0.25 |
0.32 |
0.38 |
0.45 |
|
1200.C |
- |
0.35 |
0.39 |
0.47 |
|
Al2o3 % |
38 |
50 |
64 |
72 |
|
Fe2o3 % |
0.9 |
0.8 |
0.7 |
0.5 |