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1、INTERNATIONAL STANDARD ISO 3167 Fourth edition 2002-02-15 Reference number ISO 3167:2002(E) ISO 2002 Plastics Multipurpose test specimens Plastiques prouvettes usages multiples ISO 3167:2002(E) ii ISO 2002 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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4、Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this public
5、ation may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva
6、 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland -,-,- ISO 3167:2002(E) ISO 2002 All rights reserved iii Contents Page 1Scope . 1 2Normative references . 1 3Dimensions of test specimens 2 4Preparation of test specimens 3 5Report on prepara
7、tion of test specimens . 4 Annexes ARecommended applications for multipurpose test specimens or parts thereof 5 BConsequences of changes in geometry 6 Bibliography. 8 ISO 3167:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide fed
8、eration 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 comm
9、ittee. 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 accorda
10、nce 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
11、drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 3167 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommitte
12、e SC 2, Mechanical properties. This fourth edition cancels and replaces the third edition (ISO 3167:1993), which has been revised to reduce the tolerances on specimen dimensions. Annexes A and B of this International Standard are for information only. -,-,- INTERNATIONAL STANDARDISO 3167:2002(E) ISO
13、 2002 All rights reserved 1 Plastics Multipurpose test specimens 1Scope This International Standard specifies requirements relating to multipurpose test specimens for plastic moulding materials intended for processing by injection or direct compression moulding. Specimens of types A and B are tensil
14、e test specimens from which, with simple machining, specimens for a variety of other tests can be taken (see annex A). Because they have such wide utility, these tensile specimens are referred to in this International Standard as multipurpose test specimens. The principal advantage of a multipurpose
15、 test specimen is that it allows all the test methods mentioned in annex A to be carried out on the basis of comparable mouldings. Consequently, the properties measured are coherent as all are measured with specimens in the same state. In other words, it can be expected that test results for a given
16、 set of specimens will not vary appreciably due to unintentionally different moulding conditions. On the other hand, if desired, the influence of moulding conditions and/or different states of the specimens can be assessed without difficulty for all of the properties measured. For quality-control pu
17、rposes, the multipurpose test specimen may serve as a convenient source of further specimens not readily available. Furthermore, the fact that only one mould is required may be advantageous. The use of multipurpose test specimens shall be agreed upon by the interested parties, because there may be s
18、ignificant differences between properties of the multipurpose test specimens and those specified in the relevant test methods. The main modification with respect to the previous edition of this International Standard lies in narrowing the tolerances on the radius of the shoulder of specimen types A
19、and B. Taking into account the fact that many moulds based on the previous edition are still in use, the changes are introduced as recommendations only. It is intended to change from recommended to mandatory use at the next revision. Thereby a time span of about 10 years is provided, allowing a grad
20、ual transition in the course of regular mould replacement. See also annex B. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revi
21、sions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the norma
22、tive document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 293:1986, Plastics Compression moulding test specimens of thermoplastic materials ISO 294-1:1996, Plastics Injection moulding of test specimens of thermoplastic materials Part
23、 1: General principles, and moulding of multipurpose and bar test specimens ISO 295:1), Plastics Compression moulding of test specimens of thermosetting materials ISO 2818:1994, Plastics Preparation of test specimens by machining 1)To be published. (Revision of ISO 295:1991) -,-,- ISO 3167:2002(E) 2
24、 ISO 2002 All rights reserved ISO 10724-1:1998, Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 1: General principles and moulding of multipurpose test specimens 3Dimensions of test specimens For the purposes of this International Standard, the pr
25、eferred multipurpose test specimen is the type A tensile specimen shown in Figure 1. This can be made suitable for a variety of other tests by simple cutting, because the length of its narrow parallel-sided portion is . Dimensions in millimetres Specimen typeAB Overall lengtha Recommended valueb 170
26、 Length of narrow parallel-sided portion Radius 20 to 25 Recommended valueb c Recommended valueb Distance between broad parallel-sided portionsd 104 to 113 106 to 120 Recommended rangeb 106 to 110 Width at ends Width of narrow portion Thickness a The recommended overall length of for type A is consi
27、stent with ISO 294-1 and ISO 10724-1. For some materials, the length of the tabs may need to be extended (e.g. to give an overall length of ) to prevent breakage or slippage in the jaws of the test machine. b The recommended values and ranges may become mandatory on occasion of the next revision of
28、the standard. The lower tolerances on the radius reduce the ranges of the stress concentrations that are found at the transitions between the narrow parallel-sided and the rounded portions. Together with the smaller tolerance on the distance between the broad parallel-sided portions for type B, a co
29、mmon value of the initial distance between jaws can be used for tensile testing (see ISO 527-2). c d Resulting from , , and , but within the indicated tolerance. Figure 1 Type A and B multipurpose test specimens l180 mm2 mm l3 ?150 ?150 l180260,00,5 r 241 ?60 60,00,5 l2 b220,00,2 b1100,2 h4,00,2 170
30、 mm 200 mm r = (l2 l1)2+ (b2 b1)2 4(b2 b1) l1r b1b2 -,-,- ISO 3167:2002(E) ISO 2002 All rights reserved 3 4Preparation of test specimens 4.1General Test specimens shall be prepared in accordance with the relevant material specification. When none exists, specimens shall be either directly compressio
31、n or injection moulded from the material in accordance with ISO 293, ISO 294-1, ISO 295: or ISO 10724-1, as appropriate, or machined in accordance with ISO 2818 from plates that have been compression or injection moulded from the compound. Strict control of all conditions of the specimen preparation
32、 is essential to ensure that all test specimens in a set are actually in the same state. All surfaces of the test specimens shall be free from visible flaws, scratches or other imperfections. With moulded specimens all flash, if present, shall be removed, taking care not to damage the moulded surfac
33、e. The broad sides of each specimen shall be suitably marked (see the note), for injection-moulded specimens to distinguish between the sides formed by the cavity plate and the fixed plate of the mould (see ISO 294-1 or ISO 10724-1), for compression-moulded and machined specimens to identify any asy
34、mmetry resulting from the underlying moulding process. NOTEAsymmetry with respect to thickness may influence the flexural properties, including the temperature of deflection under load (see annex A). For injection-moulded specimens, the sides can be identified by the impressions of the ejection pins
35、 and by the draft angle. Compression-moulded and machined specimens shall be marked at their shoulders. ISO bars taken from the central part of multipurpose test specimens shall be marked outside their central section, which is loaded by flexural testing. 4.2Injection moulding of multipurpose test s
36、pecimens Type A test specimens shall be injection moulded as specified in ISO 294-1 or ISO 10724-1, as appropriate, and under conditions defined in the relevant International Standard for the material under examination. 4.3Compression moulding of multipurpose test specimens Type B test specimens sha
37、ll be compression moulded directly to their final dimensions as specified in ISO 293 or ISO 295:, as appropriate, and under conditions defined in the relevant International Standard for the material under examination. 4.4Machining of multipurpose test specimens 4.4.1Machining of test specimens shall
38、 be performed either as specified in ISO 2818 or as agreed upon by the interested parties. 4.4.2Test specimens having a width of shall be cut symmetrically from the central parallel-sided portion of the multipurpose test specimen. The surface of the central parallel-sided portion of the test specime
39、n shall remain as moulded: The width of the machined portions of the specimen shall be not less than that of the central parallel-sided portion, but may exceed the width of the latter by not more than . During the machining operation, care shall be taken to avoid any damage to the moulded surfaces o
40、f the central portion. For test specimens longer than , the broad ends of the type A multipurpose test specimen (or type B for test specimens longer than ) shall be machined to the width of the central parallel-sided portion. 40 mm 10 mm 0,2 mm 80 mm 60 mm -,-,- ISO 3167:2002(E) 4 ISO 2002 All right
41、s reserved 4.4.3Type B multipurpose test specimens shall be machined from suitably processed compression-moulded plates (see 4.3). 5Report on preparation of test specimens The report shall contain the following information: a)a reference to this International Standard; b)an indication of the specime
42、n type (A or B); c)the type, source, manufacturers code, grade and form, including history, etc., if known; d)the method of moulding and the conditions used; e)the method of machining and the conditions used; f)the number of test specimens produced; g)the standard atmosphere for conditioning, plus a
43、ny special conditioning treatment if required by the standard for the material or product concerned; h)the date of preparation. -,-,- ISO 3167:2002(E) ISO 2002 All rights reserved 5 Annex A (informative) Recommended applications for multipurpose test specimens or parts thereof MethodReferencea Type
44、of specimen and/or dimensions Tensile testISO 527-2A or B Tensile creep testISO 899-1:A or B Flexural testISO 178:2001 Flexural creep testISO 899-2: Compressive testISO 604: Impact strength CharpyISO 179-1 and ISO 179-2 Impact strength IzodISO 180 Impact strength tensileISO 8256 Temperature of defle
45、ction under loadISO 75-2: Vicat softening temperatureISO 306 Hardness, ball indentationISO 2039-1:2001 Environmental stress crackingISO 22088-2:, ISO 22088-3: and ISO 22088-4: A or B or DensityISO 1183-3 Oxygen indexISO 4589-2 and ISO 4589-3 Comparative tracking index (CTI)IEC 60112 Electrolytic cor
46、rosionIEC 60426 Coefficient of linear expansionISO 11359-2 a See Bibliography. mm 80104 80104 (10 to 50)104 80104 80104 80104 80104 (?10) 104 (?20) 204 80104 30104 80104 15154 30104 (30) 104 ISO 3167:2002(E) 6 ISO 2002 All rights reserved Annex B (informative) Consequences of changes in geometry B.1
47、Test specimen length The length of may be too short for some materials in connection with a distance between the grips of . While the test specimen length of is sufficient for the large majority of tensile tests, clamping problems occasionally arise with highly reinforced grades and with very ductil
48、e ones. If is too short for some materials, this is even more true for the length of that was used in the previous edition. The “”-sign gives the freedom to use lengths , which is also allowed in this edition. This recommendation is in line with ISO 294-1. B.2Radius tolerance Taking into account the tolerances, the length between the shoulders is this edition previous edition The clamping distance (in ISO 527-2) remains unchanged: The shortest possible distance from clamp to shoulder is: (same for t