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AIM-99% Alumina Ball

AIM 99% Alumina with minimum 99wt% alpha alumina and a maximum 0.2wt% SiO2. Because of its high alumina content and low silica (SiO2 ), it has excellent thermal properties, with its high-density high-temperature resistance 1560℃, also it’s a good choice for heat retention or deceleration media. it’s an excellent material for high temperature and steam applications, such as secondary reformers in ammonia plants.

Model: AIM 99% Alumina Ball
Color: White
Shape: Ball
Technical Composition

Min. %

Max. %

Usual %

SiO2

0.001

0.2 0.18

Al2O3

90

99.6 99.3

Fe2O3

0.001

0.2 0.02

TiO2

0

0.55 0.02
CaO 0 0.1

0.2

MgO 0 0.1

0.05

Na2O 0 0.25

0.1

K2O 0 0.2

0.13

Physical properties
Index Value Value
Leachable Iron ≤ 0.01%
Apparent Porosity by Weight ≤ 7.0%
Moh’s Hardness Scale >8.0
Water Absorption <4.0wt.%
Acid Resistance >99.8%
Thermal Conductivity 0.7-0.8 w/m2 .k
Thermal Expansion @ 500℃ 0.10%
Thermal Shock Stability, 1000 ℃

then water cooling

10 times
Max. Operating Temperature 1550°C 2822
Specific Density 3.4g /cm3 212 lb /ft3
Bulk Density (Packing Density) 2.1g /cm3 131 lb /ft3
Size / Crush Strength
Nominal Size (lbs) (kg) (N/pc)
mm inch min. min. min.
3 1/8″ 115 52 510
6 1/4″ 230 105 1030
10 3/8″ 440 200 1961
13 1/2″ 1355 615 6031
16 5/8″ 1720 780 7650
19 3/4″ 3344 1520 14896
25 1″ 3432 1560 15288
38 1-1/2″ 4034 1830 17946
50 2″ 4960 2250 22065

Size tolerance:

Diameter Ф 3 6 8 10 13 16 20 25 30 38 50 75
Size tolerance ±1.0 ±1.5 ±2.0 ±3.0