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Brown Fused Alumina
Brown Fused Alumina

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Color:Dark brown;
Shape:Very Sharp;
Crystal Form:Alpha-alumina trigonal system

AF-17A

AF-17A is a kind of regular Brown Aluminum Oxide abrasive grains, the shape of the grain is angular and edge sharp with the medium high loose bulk density. To get the kind of grains, we specially process the ingots, separate the magnetic material, and sieve the grains carefully to get a complete range of grit sizes.
As an abrasive, AF-17A is mainly used in making vitrified bonded grinding wheels. As loose grains, it is widely used for pressure blasting, surface finish and other general industrial applications.

Typical Chemical Analysis

Al2O3

Fe2O3

TiO2

SiO2

CaO

95.70%

0.12%

2.66%

1.20%

0.25%

Physical Properties

Color

Dark brown

Shape

Blocky, tough and sharp

Crystal Form

Alpha-alumina trigonal system

True Specific Gravity

3.96 g/cm3

Hardness

2090 Knoop scale; 9.0 Mohs scale

Melting Temperature

About 2050 °C

Magnetic Material

0.0076%

Toughness

50.46

Hydrophilic

34.00

Bulk Density Test Value (g/cm3)

Grit No

F12

F14

F16

F20

F22

F24

F30

F36

F40

F46

B.D

1.98

1.97

1.96

1.91

1.91

1.91

1.90

1.85

1.80

1.80

Grit No

F54

F60

F70

F80

F90

F100

F120

F150

F180

F220

B.D

1.75

1.75

1.75

1.74

1.73

1.73

1.73

1.70

1.69

1.64

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.

Packing Way Selection

a. In 25kg plastic woven bags.

b. In 1000kg big bag.

c. 40 x 25kg plastic woven bags in one big bag.

d. 40 x 25kg plastic woven bags on pallet.

e. 40 x 25kg paper bags on pallet.

f. According to client’s special requirement.

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