Grinding Media Selection Criteria

PROPERTIES UNITS Aluminum Oxide Zircon Zirconia
P70 P87 P90 P96 P99 ZarsilĀ® CeZrO2
Bulk Density
(ASTM-C20-87)
Kg/M3
lbs/ft3
g/cc
2350
146.6
2.35
3500
218.3
3.50
3600
224.5
3.60
3769
235.1
3.77
3941
245.8
3.94
4020
250.7
4.02
6000
374.2
6.00
Apparent Porosity
(ASTM-C20-87)
% 0 0 0 0 0 0 0
Flexural Strength
(ASTM-C674-88)
MPa
Kpsi
89.6
13
275.8
40
334.4
48.5
365.4
53
386.1
56
162.0
23.5
806.7
117
Elastic Modulus
(ASTM-C674-88)
GPa
MPsi
81.0
11.6
174.6
25
190.0
27.2
209.6
30
265.4
38
78.9
11.3
230.5
33
Compressive Strength
(ASTM-C773-88)
MPa
Kpsi
482.7
70
1723.8
250
1461.7
212
1813.4
263
1909.9
277
1579.0
229
2440.8
354
Vicker's Hardness
(ASTM-E384-89)
VHN 590 1190 1136 1400 1848 800 1150
Fracture Toughness
(Vickers Indentation)
MPa/M2 2 3.3 3.3 3.7 4.3 2.5 8.6
Packing Density Kg/M3
lbs./ft3
1457
90.9
2170
135.3
2232
139.2
2336.8
145.7
2443.4
152.4
2492.4
155.5
3720
232.0

Sphere Diameter Availibility

Inches Millimeters P70 P87 P90 P96 P99 Zarsil CeZrO2
3/16 4.76 x x x x x
1/4 6.35 x x x x x x x
5/16 7.94 x x x x x
3/8 9.53 x x x x
1/2 12.70 x x x x x x
3/4 19.05 x x x x x x
1 25.40 x x x x x x
1-1/4 31.75 x x x x x x
1-1/2 38.10 x x x x x x
1-3/4 44.45 x x
2 50.80 x x x x
2-1/2 63.50 x x x x
3 76.20 x

Cylinder Size Availability

Inches Millimeters P70 P87 P90 P96 P99 Zarsil CeZrO2
1/4 6.35 x x x x x x
3/8 9.53 x
1/2 12.70 x x x x x x
13/16 20.64 x x x x x
1 25.40 x x
1-1/4 31.75 x x x
1-1/2 38.10 x x
2 50.80 x x