Model:

 Inert Ceramic Ball

 Color:

 Light Grey

 Shape:

 Ball

 Typical Technical Composition

Min. %

Max. %

Usual %

 SiO₂

70

77

74.9

 Al₂O₃

17

19

18

 Fe₂O₃

******

1.0

0.9

 TiO₂

******

0.5

0.46

 CaO

******

0.5

0.42

 MgO

******

0.5

0.38

 Na₂O

******

2

1.12

 K₂O

******

3.5

3.28

 Al₂O₃ + SiO₂

90

96

93

 Physical properties

 Index

Value

Value

 Leachable Iron

≤ 0.1%

******

 Apparent Porosity by Weight, dia. ≥ 10mm

≤ 0.4%

******

 Apparent Porosity by Weight, dia. = 6mm

≤ 1.0%

******

 Apparent Porosity by Weight, dia. = 3mm

≤ 3.0%

******

 Moh's Hardness Scale

>6.5

******

 Water Absorption

<0.5wt%

******

 Acid Resistance

>99.8%

******

 Alkaline Resistance

>85%

******

 Thermal Conductivity

0.9-1.0 w/m².k

******

Thermal Expansion @ 500℃

0.20%

******

Specific Heat

628-837 j/kg

******

Thermal Shock Stability, 500 ℃ then water cooling

10 times

******

Max. Operating Temperature

1050℃

1922

Specific Density

2300 kg/m³

144 lb/ft³

Bulk Density (Packing Density)

1350 g/cm³

84 lb/ft³

Size

Crush Strength

Nominal Size

(lbs)

(kg)

(N/pc)

mm

Inch

min.

min.

min.

3

1/8

77

35

343

6

1/4

176

80

784

10

3/8

234

106

1039

13

1/2

572

260

2548

16

5/8

726

330

3234

19

3/4

1672

760

7448

25

1

1870

850

8330

38

1.5

2090

950

9310

50

2

3476

1580

15484