INTERNATIONAL ISO
STANDARD 3310-1
Fourth edition
2000-07-15
Test sieves — Technical requirements and
testing —
Part 1:
Test sieves of metal wire cloth
Tamis de contrôle — Exigences techniques et vérifications —
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Partie 1: Tamis de contrôle en tissus métalliques
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ISO 3310-1:2000
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Reference number
ISO 3310-1:2000(E)
© ISO 2000
ISO 3310-1:2000(E)
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ISO 3310-1:2000
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ISO 3310-1:2000(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this part of ISO 3310 may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 3310-1 was prepared by Technical Committee ISO/TC 24, Sieves, sieving and other
sizing methods, Subcommittee SC 1, Test sieves, test sieving.
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This fourth edition cancels and replaces the third edition (ISO 3310-1:1990), of which it constitutes a technical
revision.
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ISO 3310 consists of the following parts, under the general title Test sieves — Technical requirements and testing:
— Part 1: Test sieves of metal wire cloth ISO 3310-1:2000
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— Part 2: Test sieves of perforated metala9ad03915a39/iso-3310-1-2000
plate
— Part 3: Test sieves of electroformed sheets
Annexes A and B of this part of ISO 3310 are for information only.
© ISO 2000 – All rights reserved iii
ISO 3310-1:2000(E)
Introduction
As the accuracy of test sieving depends on the dimensional accuracy of the test sieve openings, it is considered
necessary in this part of ISO 3310 to keep the tolerances on the apertures in metal wire cloth as close as possible.
Requirements other than tolerances on the apertures, such as requirements for the wire diameter, have not been
limited more closely than necessary, since the influence of these criteria on test sieving is of minor importance, and
excessively strict requirements may make manufacturing unnecessarily difficult.
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ISO 3310-1:2000
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iv © ISO 2000 – All rights reserved
INTERNATIONAL STANDARD ISO 3310-1:2000(E)
Test sieves — Technical requirements and testing —
Part 1:
Test sieves of metal wire cloth
1 Scope
This part of ISO 3310 specifies the technical requirements and corresponding test methods for test sieves of metal
wire cloth.
It applies to test sieves having aperture sizes from 125 mm down to 20 mm, in accordance with ISO 565.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
iTeh STANDARD PREVIEW
this part of ISO 3310. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 3310 are encouraged to investigate the
(standards.iteh.ai)
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
ISO 3310-1:2000
registers of currently valid International Standards.
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ISO 565:1990, Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of
a9ad03915a39/iso-3310-1-2000
openings.
ISO 2395:1990, Test sieves and test sieving — Vocabulary.
ISO 2591-1:1988, Test sieving — Part 1: Methods using test sieves of woven wire cloth and perforated metal plate.
3 Terms and definitions
For the purposes of this part of ISO 3310, the terms and definitions given in ISO 2395 apply.
4 Designation
4.1 Test sieves of metal wire cloth shall be designated by the nominal size of the apertures of the metal wire
cloth.
4.2 Nominal aperture sizes of 1 mm and above shall be expressed in millimetres (mm); nominal aperture sizes
below 1 mm shall be expressed in micrometres (mm).
5 Metal wire cloth
5.1 Requirements
Aperture tolerances and wire diameters shall be as specified in Tables 1 and 2.
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ISO 3310-1:2000(E)
Table 1 — Aperture tolerances and wire diameters
Values in millimetres
Nominal aperture sizes, w a Tolerances on aperture size Nominal sizes of wire diameters, d
For any For Maximum
Principal Supplementary Preferred Permissible range
aperture average standard
sizes sizes sizes of choice
size aperture size deviation
R 20/3 R 20 R 40/3 +X ±Y I0 dnom dmax dmin
(1) (2) (3) (4) (5) (6) (7) (8) (9)
125 125 125 4,51 3,66 8 9,2 6,8
112 4,15 3,29 8 9,2 6,8
106 3,99 3,12 6,3 7,2 5,4
100 3,82 2,94 6,3 7,2 5,4
90 90 90 3,53 2,66 6,3 7,2 5,4
80 3,24 2,37 6,3 7,2 5,4
75 3,09 2,22 b 6,3 7,2 5,4
71 2,97 2,1 5,6 6,4 4,8
63 63 63 2,71 1,87 5,6 6,4 4,8
56 2,49 1,67 5 5,8 4,3
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53
STANDARD
2,39 1,58
PREVIEW5 5,8 4,3
50 (standards.iteh.ai)
2,29 1,49 5 5,8 4,3
45 45 45 2,12 1,35 1,000 4,5 5,2 3,8
ISO 3310-1:2000
40 https://standards.iteh.ai/catalog/standards/sist/a84a1f4d-33e8-4b4c-a166-
1,94 1,2 1,000 4,5 5,2 3,8
37,5
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1,85 1,13 1,000 4,5 5,2 3,8
35,5 1,78 1,07 1,000 4 4,6 3,4
31,5 31,5 31,5 1,63 0,95 1,000 4 4,6 3,4
28 1,5 0,85 1,000 3,55 4,1 3
26,5 1,44 0,8 1,000 3,55 4,1 3
25 1,38 0,76 1,000 3,55 4,1 3
22,4 22,4 22,4 1,27 0,68 0,920 3,55 4,1 3
20 1,17 0,61 0,780 3,15 3,6 2,7
19 1,13 0,58 0,729 3,15 3,6 2,7
18 1,08 0,55 0,690 3,15 3,6 2,7
16 16 16 0,99 0,49 0,610 3,15 3,6 2,7
14 0,9 0,43 0,530 2,8 3,2 2,4
13,2 0,86 0,41 0,506 2,8 3,2 2,4
12,5 0,83 0,39 0,480 2,5 2,9 2,1
11,2 11,2 11,2 0,77 0,35 0,430 2,5 2,9 2,1
10 0,71 0,31 0,385 2,5 2,9 2,1
9,5 0,68 0,3 0,372 2,24 2,6 1,9
9 0,65 0,28 0,350 2,24 2,6 1,9
2 © ISO 2000 – All rights reserved
ISO 3310-1:2000(E)
Table 1 (continued)
Values in millimetres
Nominal aperture sizes, w a Tolerances on aperture size Nominal sizes of wire diameters, d
For any For Maximum
Principal Supplementary Preferred Permissible range
aperture average standard
sizes sizes sizes of choice
size aperture size deviation
R 20/3 R 20 R 40/3 +X ±Y I0 dnom dmax dmin
(1) (2) (3) (4) (5) (6) (7) (8) (9)
8 8 8 0,6 0,25 0,315 2 2,3 1,7
7,1 0,55 0,22 0,280 1,8 2,1 1,5
6,7 0,53 0,21 0,269 1,8 2,1 1,5
6,3 0,51 0,2 0,255 1,8 2,1 1,5
5,6 5,6 5,6 0,47 0,18 0,235 1,6 1,9 1,3
5 0,43 0,16 0,210 1,6 1,9 1,3
4,75 0,41 0,15 0,199 1,6 1,9 1,3
4,5 0,4 0,14 0,190 1,4 1,7 1,2
4 4 4 0,37 0,13 0,175 1,4 1,7 1,2
3,55 0,34 0,11 0,155 1,25 1,5 1,06
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3,35
STANDARD
0,32 0,11
PREVIEW
0,151 1,25 1,5 1,06
3,15 (standards.iteh.ai)
0,31 0,1 0,145 1,25 1,5 1,06
2,8 2,8 2,8 0,29 0,09 0,130 1,12 1,3 0,95
ISO 3310-1:2000
2,5 https://standards.iteh.ai/catalog/standards/sist/a84a1f4d-33e8-4b4c-a166-
0,26 0,08 0,117 1 1,15 0,85
2,36
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0,25 0,08 0,114 1 1,15 0,85
2,24 0,24 0,07 0,110 0,9 1,04 0,77
2 2 2 0,23 0,07 0,105 0,9 1,04 0,77
1,8 0,21 0,06 0,092 0,8 0,92 0,68
1,7 0,2 0,06 0,087 0,8 0,92 0,68
1,6 0,19 0,05 0,082 0,8 0,92 0,68
1,4 1,4 1,4 0,18 0,05 0,076 0,71 0,82 0,6
1,25 0,16 0,04 0,069 0,63 0,72 0,54
1,18 0,16 0,04 0,067 0,63 0,72 0,54
1,12 0,15 0,04 0,064 0,56 0,64 0,48
1 1 1 0,14 0,03 0,059 0,56 0,64 0,48
NOTE All aperture sizes apply for plain weave.
a In accordance with ISO 565:1990, Table 1.
b On account of the small number of apertures to be measured, the calculation of the parameter I0 has no physical reality.
© ISO 2000 – All rights reserved 3
ISO 3310-1:2000(E)
Table 2 — Aperture tolerances and wire diameters
Values in micrometres
Nominal aperture sizes, w a Tolerances on aperture size Nominal sizes of wire diameters, d
For any For Maximum
Principal Supplementary Preferred Permissible range
aperture average standard
sizes sizes sizes of choice
size aperture size deviation
R 20/3 R 20 R 40/3 +X ±Y I0 dnom dmax dmin
(1) (2) (3) (4) (5) (6) (7) (8) (9)
900 131 31 54,2 500 580 430
850 127 29 52,2 500 580 430
800 122 28 50,2 450 520 380
710 710 710 112 25 45,8 450 520 380
630 104 22 42 400 460 340
600 101 21 40,5 400 460 340
560 96 20 38,7 355 410 300
500 500 500 89 18 35,9 315 360 270
450 84 16 33,2 280 320 240
425 81 16 32,2 280 320 240
400
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78 15
PREVIEW
30,9 250 290 210
355 355 355 (standards.iteh.ai)
72 13 28,2 224 260 190
315 67 12 26,1 200 230 170
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300 65 12 25,4 200 230 170
280 62
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11 24,2 180 210 150
250 250 250 58 9,9 22,4 160 190 130
224 54 9 20,8 160 190 130
212 52 8,7 20 140 170 120
200 50 8,3 19,4 140 170 120
180 180 180 47 7,6 18 125 150 106
160 44 6,9 16,8 112 130 95
150 43 6,6 16,3 100 115 85
140 41 6,3 15,6 100 115 85
125 125 125 38 5,8 14,4 90 104 77
112 36 5,4 13,6 80 92 68
106 35 5,2 13,2 71 82 60
100 34 5 12,8 71 82 60
90 90 90 32 4,6 12 63 72 54
80 30 4,3 11,3 56 64 48
75 29 4,1 10,9 50 58 43
71 28 4 10,5 50 58 43
4 © ISO 2000 – All rights reserved
ISO 3310-1:2000(E)
Table 2 (continued)
Values in micrometres
Nominal aperture sizes, w a Tolerances on aperture size Nominal sizes of wire diameters, d
For any For Maximum
Principal Supplementary Preferred Permissible range
aperture average standard
sizes sizes sizes of choice
size aperture size deviation
R 20/3 R 20 R 40/3 +X ±Y I0 dnom dmax dmin
(1) (2) (3) (4) (5) (6) (7) (8) (9)
63 63 63 26 3,7 9,9 45 52 38
56 25 3,5 9,3 40 46 34
53 24 3,4 9 36 41 31
50 23 3,3 8,7 36 41 31
45 45 45 22 3,1 8,3 32 37 27
40 21 3 7,9 32 37 27
38 20 2,9 7,7 30 35 24
R'10 36 20 2,8 7,5 30 35 24
32 19 2,7 6,8 28 33 23
25 16 2,5 6,1 25 29 21
20
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PREVIEW5,7 20 23 17
NOTE
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All aperture sizes apply for plain weave. Aperture sizes of 45 mm and smaller apply also for twilled weave. It
should be noted, however, that plain and twilled weave sieves can have different sieving characteristics.
a
ISO 3310-1:2000
In accordance with ISOhttps://standards.iteh.ai/catalog/standards/sist/a84a1f4d-33e8-4b4c-a166-
565:1990, Table 2.
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5.1.1 Aperture tolerances and standard deviations
5.1.1.1 The aperture tolerances X, Y and I0 as given in Tables 1 and 2, Columns 4, 5 and 6, apply to the
aperture sizes as measured on the centre-lines of the aperture (see Figure 1) separately in warp and weft
directions.
5.1.1.2 No aperture size shall exceed the nominal size w by more than X.
2w 0,75
X= + 4 w 0,25 (1)
3
where X and w are expressed in micrometres.
5.1.1.3 The average aperture size w shall not depart from the nominal size w by more than ± Y.
w 0,98
Y= + 1,6 (2)
27
where Y and w are expressed in micrometres.
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ISO 3310-1:2000(E)
Key
w is the aperture size
d is the wire diameter
p is the pitch (w + d)
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Figure 1 — AperturePREVIEW
size
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5.1.1.4 The maximum standard deviation of the aperture sizes in warp and weft directions taken separately
ISO 3310-1:2000
shall not exceed the values of I0 in Tables 1 and 2, Column 6.
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The standard deviation I is obtained by measurement of all full apertures, N, in the test sieve and is calculated
from equation (3):
N
1
I= å
N i =1
(wi - w )2 (3)
The standard deviation s is calculated from the measurement of the number of apertures, n, listed in Table 4, using
equation (4):
n
1
s= å
n - 1i = 1
(wi - w )2 (4)
The predicted value, Is, of the standard deviation may be calculated from equation (5):
Is = K×s (5)
where values of K are obtained from Columns 3 or 5 in Table 4.
Values of K for compliance and inspection may also be calculated from equation (6):
2,5
K = 1,2 + (6)
2n
6 © ISO 2000 – All rights reserved
ISO 3310-1:2000(E)
Values of K for calibration may also be calculated from equation (7):
3,0
K = 1,2 + (7)
2n
NOTE An example of the evaluation of the standard deviation is given in annex A.
5.1.2 Wire diameter
5.1.2.1 The wire diameters given in Tables 1 and 2 apply to metal wire cloth mounted in a frame.
5.1.2.2 The nominal wire diameters given in Tables 1 and 2, Column 7, are preferred.
The nominal wire diameters may, however, depart from these values within the limits dmax and dmin in Tables 1 and
2, Columns 8 and 9. These limits define the permissible range of choice, approximately ± 15 % of the preferred
sizes dnom given in Tables 1 and 2, Column 7.
5.1.2.3 The wires in a test sieve shall have a similar diameter in the warp and weft directions.
5.2 Test methods
Every aperture in the metal wire cloth in a test sieve shall have the same probability of being inspected for
compliance with the requirements listed in 5.1.
iTeh STANDARD PREVIEW
For sieves having 20 apertures or less, measure all full apertures (see Figure 2). For sieves having more than 20
apertures, carry out the examination by the following three tests.
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In tests 2 and 3 below, measure the aperture sizes using appropriate equipment having a precision of reading of
1 mm or 1/4 of the tolerance for the average aperture size, Y, whichever is the greater.
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Test 1 — Visual examination of general condition of the wire cloth
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View the wire cloth against a uniformly illuminated background. If obvious deviations from uniformity of appearance
are found, for example weaving defects, creases and wrinkles, the sieve is unacceptable.
Test 2 — Inspection for oversize apertures (tolerance X)
Carefully and methodically examine the appearance of all the apertures in order to detect oversize apertures for
subsequent measurement. Apertures in fine sieves are best viewed when magnified optically. In the optical
method, the magnifications listed in Table 3 may be used.
Table 3 — Magnifying power in optical method
Nominal aperture size 5 mm to 500 mm 500 mm to 250 mm 250 mm to 20 mm
Magnification 5 to 20 20 to 50 50 to 500
If any aperture is found to be oversize by more than tolerance X, the sieve is unacceptable.
Test 3 — Measurement of average aperture size w for tolerance Y, standard deviation for tolerance I0 and
wire diameter d
Figures 2 to 4 show where to measure the individual apertures in a 200 mm test sieve.
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