These gradations are our base gradations; additional gradations can be blended to meet your specifications, at no additional cost.

All values shown are averages and do not necessarily reflect a specific sample.

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material gradesieve size
(U.S. standard)		opening
(mm)		cum. %
retained		% passing
6 x 146
8
10
12
14
16
18
20		3.36
2.38
2.00
1.68
1.41
1.19
1.00
0.84		0.1
14.7
45.8
77.9
93.2
97.0
98.2
98.8		99.9
85.3
54.2
22.1
6.8
3.0
1.8
1.2
8 x 166
8
10
12
14
16
18
20		3.36
2.38
2.00
1.68
1.41
1.190
1.000
0.840		-
0.4
4.6
29.3
76.0
94.8
99.0
99.7		-
99.6
95.4
70.7
24.0
5.2
1.0
0.3
12 x 2010
12
14
16
18
20
25
30		2
1.68
1.41
1.19
1.00
0.84
0.71
0.590		-
0.7
10.7
37.6
74.5
92.7
98.2
99.7		-
99.3
89.3
62.4
25.5
7.3
1.8
0.3
20/308
12
16
18
20
25
30
35
40
50		2.38
1.68
1.19
1.00
0.84
0.71
0.59
0.500
0.420
0.297		-
-
1.1
8.7
36.4
72.8
94.0
98.3
99.1
99.7		-
-
98.9
91.3
63.6
27.2
6.0
1.7
0.9
0.3
30/6516
20
25
30
35
40
45
50
60
70
100		1.19
0.84
0.71
0.59
0.50
0.42
0.35
0.30
0.25
0.210
0.149		0.6
2.2
3.9
12.0
27.3
43.1
56.7
69.1
81.6
88.9
97.6
99.4
97.8
96.1
88.0
72.7
56.9
43.3
30.9
18.4
11.1
2.4