Typical Chemical Analysis

Al2O3

Fe2O3

TiO2

SiO2

CaO

95.65%

0.07%

2.69%

0.72%

0.23%

Physical Properties

Color

Dark brown

Shape

Very Sharp

Crystal Form

Alpha-alumina trigonal system

True Specific Gravity

3.85 g/cm3

Hardness

2090 Knoop scale; 9.0 Mohs scale

Melting Temperature

About 2050 °C

Magnetic Material

0.0076%

Bulk Density Test Value (g/cm3)

Grit No

F12

F14

F16

F20

F22

F24

F30

F36

F40

F46

B.D

1.83

1.80

1.78

1.76

1.76

1.74

1.72

1.70

1.67

1.65

Grit No

F54

F60

F70

F80

F90

F100

F120

F150

F180

F220

B.D

1.63

1.61

1.58

1.55

1.55

1.52

1.49

1.47

1.45

1.44

Grit Size Available (F)

12

14

16

20

22

24

30

36

40

46

54

60

70

80

90

100

120

150

180

220

Particle Size Distribution (PSD)

PSD According to ISO, ANSI, FEPA and JIS.