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Diameter(mm) | 3 | 6 | 10 | 13 | 16 | 19 | 25 | 38 | 50 |
Nominal Size(inch) | 1/8 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 1 | 1.5 | 2 |
(lbs) | 77 | 187 | 352 | 572 | 726 | 1672 | 1980 | 2090 | 8800 |
Crush Strength Min. (kg) | 35 | 85 | 160 | 260 | 330 | 760 | 900 | 950 | 4000 |
(N/PC) | 343 | 885 | 1570 | 2540 | 3234 | 7448 | 8830 | 9310 | 39200 |
Model | 17%-99% Inert Alumina Ceramic Ball | ||||||
Color | Light Gray to White | ||||||
Shape | Beads | ||||||
Chemical composition | Min. % | Usual % | Max. % | ||||
Al2O3 | 17-30 | 47-56 | 90-99 | ||||
Al2O3 + SiO2 | >92 | >93 | >94 | ||||
CaO | <1.5 | <2 | <4 | ||||
Fe2O3 | <1 | <1.0 | 0.2 | ||||
TiO2 | <0.5 | <0.1 | <0.1 | ||||
CaO | / | 0.5 | 0.42 | ||||
MgO | / | 0.5 | 0.38 | ||||
Na2O | / | 2 | 1.12 | ||||
K2O | / | 3.5 | 3.28 | ||||
Physical properties | Leachable Iron (%) | ≤0.0001 | |||||
Apparent Porosity by Weight (%) | D≥10mm | ≤0.4 | |||||
D=6mm | ≤1.0 | ||||||
D=3mm | ≤3.0 | ||||||
Water absorption (wt.%) | <0.5 | ||||||
Acid resistance (%) | >99.8 | ||||||
Alkaline resistance (%) | >85 | ||||||
Bulk Density | (g/cm3) | 1.35 | |||||
(lb/ft3) | 84 | ||||||
Specific density | (kg/m3) | 2300 | |||||
(lb/ft3) | 144 | ||||||
Moh’s hardness (scale) | >6.5 | ||||||
Thermal conductivity (w/m2.k) | 0.9-1.0 | ||||||
Specific heat (J/kg.℃) | 628-837 | ||||||
Max. Operating Temperature | (℃) | 1050 | |||||
(℉) | 1922 | ||||||
Thermal expansion (%) (500℃) | 0.20 | ||||||
Thermal Shock Stability (times) (500 ℃ then water cooling) | 10 | ||||||










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