95% 92% Alumina Ceramic Ball as Mill Grinder
Alumina ceramics with high strength, hardness, wear resistance, corrosion resistance, good thermal conductivity, high insulation, low dielectric loss, dielectric constants between 8-10. Electrical properties with temperature and frequency stable, especially when the content is more than 95.5% at frequencies up to 10 Hz (HZ) dielectric loss <0.001, excellent performance.
Size: 1mm, 3mm, 6mm, 9mm, 13mm, 16mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 95mm
1: 92% Alumina content series
A) Al2O3 ≥ 92%
B) Water absorption <0.01%
C) Bulk density ≥ 3.63 g/cm3
D) Mosh hardness: 9
E) Color: White
2: 95% High-alumina grinding ball
A) Al2O3 ≥ 95% Sio2<3.8%, others: ~3%
B) Water absorption <0.01%
C) Bulk density ≥ 3.7 g/cm3
D) Mosh hardness: 9
E) Color: White
F) self abrasion loss: <0.008%
3: 68% Medium alumina grinding ball series:
A) Al2O3: 65%~75%
B) Bulk density ≥ 2.93g/cm3
C) Mosh hardness: 8 grade
D) self abrasion loss: 0.01
E) Color: White or brown
| Ceramic Item |
Al2O3 |
SiO2 |
Others |
| 92% ball |
92% |
<6.5% |
~2 % |
| 95% ball |
95% |
<3.6~3.7 % |
~2% |
| 68% ball |
68% |
<21.2% |
~10.18% |
B.Physical Analysis
| Item |
Alumina
Content |
Mohs hardness |
Abrasion loss
(24hours) |
Density
(g/cm3) |
Water absorption |
| 92% ball |
92% |
9 |
<0.01% |
3.6 |
<0.01% |
| 95% ball |
95% |
9 |
<0.01% |
3.74 |
<0.01% |
| 68% ball |
68% |
7-8 |
<0.03% |
3 |
<0.02% |
| Producing way ::cool-isostatic pressing , or by rolling |
C. Size :
| Diameter (mm) |
D1-3 |
D6/8/10/13/16/20/25 |
D30/40 |
D50/60/70 |
| Tolerance (±mm) |
0.5 |
1 |
2 |
3
|
Audited Supplier 
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