Typical Specification (F30)

Chemical

Al2O3

Fe2O3

FeO

SiO2

18-20%

0.9-1.0%

25-37%

35-40%

MnO

MgO

CaO

0.5-2.0%

0.2-1.4%

2.2-3.9%

Bulk Density

1.66g/cm3

Physical Properties

Color

 Brown, black and red color

Shape

The abrasive get fracture toughness, good hardness modest, sharp edge

Crystal Form

 The equiaxial crystal, octagonal corners

True Specific Gravity

3.96 g/cm3

Hardness

7.49-8.00 Mohs scale

Melting Temperature

1180-1340 °C

Magnetic

Weak magnetic

Grit Sizes (F)

8

12

14

16

20

22

24

30

36

40

46

54

60

70

80

90

100

120

150

180

220

Bulk Density Test Value (g/cm3)

Grit No

F12

F14

F16

F20

F22

F24

F30

F36

F40

F46

B.D

1.86

1.82

1.78

1.74

1.72

1.70

1.66

1.64

1.62

1.62

Grit No

F54

F60

F70

F80

F90

F100

F120

F150

F180

F220

B.D

1.60

1.60

1.58

1.56

1.56

1.54

1.52

1.52

1.50

1.50

Particle Size Distribution (PSD)

According to GB 2477 or JB 3630,GB 9258