Item
|
Unit/Item
|
ST-78
|
ST-75
|
ST-73
|
Al2O3
|
%
|
78
|
75
|
73
|
Rate of Water Absorption
|
%
|
7
|
8
|
9.5
|
Anti-Bending strength
|
Mpa
|
≥82
|
≥68
|
≥55
|
Bulk Density
|
g/cm3
|
≥2.7
|
≥2.6
|
≥2.5
|
Thermal expansion
|
×10-6/℃
|
5.7
|
5.5
|
5.3
|
Max service temperature
|
℃
|
1350
|
1250
|
1200
|