Index

Unit

Value

Porosity

Vol%

1

Specific heat

KJ/Kg

840-900

Crush strength

N/mm²

390-420

Specific gravity

g/cm³

2.3-2.45

Acid Resistance

%

99.98

Firing temperature

℃

1280 to 1320

Softening point

℃

>1400

Water absorption

%

<0.2

Thermal Expansion

10^-6mm/mm℃

4.7

Hardness

Mohr Scale

7-8

Comprehensive strength

Newtons

5600

Shock strength

Kgf.cm/cm²

1.0-1.5

Nominal Size

Approx. Weight

Surface  area 

Void Fraction(%)

Dry Packing factor(m^-1)

1b/ft³

Kg/m³

ft²/ft³

m²/m³

1"

40

645

79.5

260

77

570

1.5"

37.5

600

64

210

78

430

2"

35.6

570

42.8

140

79

277

3"

36

580

32

105

77

206