90% Alumina Ball -Bóng nhôm 90%

Model

90% High alumina Ceramic Ball

Color

White

Shape

Ball

Chemical composition

Min. %

Max. %

Usual %

Al2O3

90

92

90.8

SiO2

/

4

2

Fe2O3

/

0.3

0.02

TiO2

/

0.1

0.02

CaO

/

4

1.50

MgO

/

0.1

0.05

Na2O

/

0.25

0.1

K2O

/

0.2

0.13

Physical properties

Leachable Iron (%)

≤0.01

Apparent Porosity by Weight (%)

≤7.0

Water absorption (wt.%)

＜4.0

Acid resistance (%)

＞99.8

Alkaline resistance (%)

≥90

Bulk Density

(g/cm3)

1.9

(lb/ft3)

125

Specific density

(kg/m3)

3200

(lb/ft3)

212

Moh’s hardness (scale)

＞8.0

Thermal conductivity (w/m2.k)

0.7-0.8

Max. Operating Temperature

(℃)

1550

(℉）

2822

Thermal expansion (%)

(500℃)

0.10

Thermal Shock Stability (times)

(500 ℃ then water cooling)

10

Geometric properties

Nominal Size

(mm)

3

6

10

13

16

19

25

38

50

(inch)

1/8

1/4

3/8

1/2

5/8

3/4

1

1.5

2

Crush Strength Min.

(lbs)

115

230

440

1355

1720

3344

3432

4034

4960

(kg)

52

105

200

615

780

1520

1560

1830

2250

(N/PC)

510

1030

1961

6031

7650

14896

15288

17946

22065