Item

Slide plate

Slide plate proper

Air vent ring

Al₂0₃%Not less than

72

90

ZrO₂%Not less than

6

4

C%Not less than

7

 

Density g/cm³ 

3.05

 

Compression resistance under ambient temperature Mpa

120

 

Apparent porosity rate% not big than

10

 

 Anit-crack strength under ambient temperature

12

20-22

Air flow not less than (0.1Mpa)(Nl/min)

 

30