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
6/204
6
8
12
14
16
18
20
25
30
40
50		4.76
3.36
2.38
1.68
1.41
1.190
1.000
0.840
0.710
0.590
0.420
0.297		-
-
4.5
26.0
54.0
85.1
96.1
97.8
98.4
98.8
99.4
99.6		-
-
95.5
74.0
46.0
14.9
3.9
2.2
1.6
1.2
0.6
0.4
20/308
12
16
18
20
25
30
35
40
50		2.38
1.68
1.19
1.00
0.84
0.710
0.590
0.500
0.420
0.297		-
-
4.6
19.6
41.5
63.5
83.6
94.1
97.0
98.8		-
-
95.4
80.4
58.5
36.5
16.4
5.9
3.0
1.2
30/4518
20
25
30
35
40
45
50
60
70
100		1.00
0.84
0.71
0.59
0.50
0.420
0.350
0.297
0.250
0.210
0.149		-
1.4
2.9
8.5
30.6
59.6
76.1
87.2
93.6
96.4
99.5		-
98.6
97.1
91.5
69.4
40.4
23.9
12.8
6.4
3.6
0.5
30/6516
20
25
30
35
40
45
50
60
70
100		1.19
0.84
0.71
0.59
0.50
0.420
0.350
0.297
0.250
0.210
0.149		-
0.5
1.3
4.6
13.9
27.0
38.1
49.8
63.7
73.8
94.9		-
99.5
98.7
95.4
86.1
73.0
61.9
50.2
36.3
26.2
5.1
40F20
30
40
45
50
60
70
80
100
140
200		0.84
0.59
0.42
0.35
0.297
0.250
0.210
0.177
0.149
0.105
0.074		-
0.2
6.2
15.9
31.1
52.2
65.4
82.3
93.4
99.4
99.8		-
99.8
93.8
84.1
68.9
47.8
34.6
17.7
6.6
0.6
0.2