TYPE

INDEX

HC--3

HC—88R

HC—88RX

Chemical

Composition

(%)

Al2O3

>93

>88

>88

SiO2

<0.5

<0.5

<0.5

MgO

2--3

6--8

6--8

Max. working temperature

1800

1800

1800

Density after 110 °C oven dry (g/cm³)

>3.0

>3.1

>3.1

Burn linear by

 1500°C*3h(%)

+0.5

+0.1~~+1.0

+0.1~~+1.0

Breaking& Compress

Strength (Mpa)

110°C*24h

>50/>7

>60/>7

>70/>8

1100°C*3h

>60/>8

>70/>8

>90/>10

1500°C*3h

>90/>15

>120/>15

>120/>15

criticality size (mm)

5--6

5--8

8--12