Item
|
Technical Quality Index
|
||
A
|
B
|
||
Chemical Composition
|
Al2O3 %
|
≥65
|
≥70
|
ZrO2 %
|
≥5
|
||
MgO %
|
≥12
|
||
C %
|
≤5
|
≤6
|
|
Physical Properties
|
Porosity
|
≤10
|
≤10
|
Density
|
≥3
|
≥3
|
|
Cold Crushing Strength
|
≥150
|
≥120
|
|
Cold Bending Strength
|
≥30
|
≥30
|
|
High Temperature Bending Strength
|
≥25
|
≥20
|