1、BSI Standards PublicationBS EN ISO 6259-3:2015Thermoplastics pipes Determination of tensilepropertiesPart 3: Polyolefin pipesBS EN ISO 6259-3:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO6259-3:2015.The UK participation in its preparation was entruste
2、d to TechnicalCommittee PRI/88/4, Test Methods - Plastic Piping.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. T
3、he British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81207 1ICS 23.040.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30
4、June 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6259-3 June 2015 ICS 23.040.20 English Version Thermoplastics pipes - Determination of tensile properties - Part 3: Polyolefin pipes (ISO 6259-3:2015) Tubes en matires thermoplasti
5、ques - Dtermination des caractristiques en traction - Partie 3: Tubes en polyolfines(ISO 6259-3:2015) Rohre aus Thermoplasten - Bestimmung der Eigenschaften im Zugversuch - Teil 3: Polyolefin-Rohre (ISO 6259-3:2015)This European Standard was approved by CEN on 21 February 2015. CEN members are bound
6、 to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN
7、-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre ha
8、s the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
9、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Bru
10、ssels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6259-3:2015 EBS EN ISO 6259-3:2015EN ISO 6259-3:2015 (E) 3 European foreword This document (EN ISO 6253-3:2015) has been prepared by Technical Committee ISO/TC 138 “Pla
11、stics pipes, fittings and valves for the transport of fluids“ in collaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of
12、an identical text or by endorsement, at the latest by December 2015, and conflicting national standards shall be withdrawn at the latest by December 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall no
13、t be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark,
14、 Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice
15、 The text of ISO 6259-3:2015 has been approved by CEN as EN ISO 6259-3:2015 without any modification. BS EN ISO 6259-3:2015ISO 6259-3:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative reference . 13 Terms and definitions . 14 Principle 15 Apparatus . 16 Test pieces . 16.1 Selection of the test
16、pieces 16.1.1 General 16.1.2 Dimensions of test pieces . 26.2 Preparation of test pieces 46.3 Cutting method . 46.4 Machining method . 47 Conditioning 48 Test speed 59 Procedure. 510 Expression of results 511 Test report . 5Annex A (informative) Polyethylene pipes Basic specification 6Annex B (infor
17、mative) Cross-linked polyethylene pipes Basic specification 7Annex C (informative) Polypropylene pipes Basic specification 8Annex D (informative) Polybutene pipes Basic specification 9Bibliography .10 ISO 2015 All rights reserved iiiContents PageBS EN ISO 6259-3:2015ISO 6259-3:2015(E)ForewordISO (th
18、e 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 committ
19、ee 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 electrotechn
20、ical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted i
21、n accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
22、Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute a
23、n endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee
24、 responsible for this document is ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastic materials and their accessories Test methods and basic specifications.This second edition cancels and replaces
25、 the first edition (ISO 6259-3:1997) which has been technically revised.ISO 6259 consists of the following parts, under the general title Thermoplastics pipes Determination of tensile properties: Part 1: General test method Part 2: Pipes made of unplasticized poly(vinyl chloride) (PVC-U), chlorinate
26、d poly(vinyl chloride) (PVC-C) and high-impact poly(vinyl chloride) (PVC-HI) Part 3: Polyolefin pipesiv ISO 2015 All rights reservedBS EN ISO 6259-3:2015ISO 6259-3:2015(E)IntroductionThis part of ISO 6259 specifies a method for determining the tensile properties of polyolefin pipes.It can provide da
27、ta for further testing for the purpose of research and development.It cannot be regarded as significant for applications in which the conditions of application of the force differ considerably with those in this test method, such applications requiring the appropriate impact, creep and fatigue tests
28、.The tests of tensile properties are intended to be principally regarded as tests of material in the form of pipe. The results can be useful as a material process control test, but are not a quantitative assessment of long term pipe performance.ISO 6259 has been drawn up on the basis of ISO 527.For
29、ease of use, it has been thought preferable to draw up a complete document that can be used for determining the tensile properties of thermoplastics pipes. For greater detail, reference can be made to ISO 527.However, let it be noted that ISO 527 is applicable to materials in sheet form, whereas ISO
30、 6259 is applicable to materials in pipe form.As it was considered essential to test the pipes as supplied, i.e. without reduction in thickness, difficulties are those in the choice of test piece.ISO 527 specifies test pieces a few millimetres thick, whereas the thickness of a pipe can be in excess
31、of 50 mm. This is why certain changes have been made on this point.For thin-walled pipes, the test piece can be obtained by die cutting, while for thick pipes, it can be obtained only by machining.At present, ISO 6259 comprises three parts. The first part gives the general conditions under which the
32、 tensile properties of thermoplastics pipes are to be determined. The other two parts provide, respectively, particular information on the execution of tests on pipe made from different materials (see the Foreword).The basic specifications for the various materials are given in informative annexes i
33、n the relevant parts. ISO 2015 All rights reserved vBS EN ISO 6259-3:2015BS EN ISO 6259-3:2015Thermoplastics pipes Determination of tensile properties Part 3: Polyolefin pipes1 ScopeThis part of ISO 6259 specifies a method of determining the tensile properties of polyolefin (polyethylene, cross-link
34、ed polyethylene, polypropylene, and polybutene) pipes, and the following properties: the stress at yield; the elongation at break.This part of ISO 6259 also gives the corresponding basic specifications in Annexes A to D for information purposes only.2 Normative referenceThe following documents, in w
35、hole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 527-1:2012, Plastics Determinatio
36、n of tensile properties Part 1: General principlesISO 6259-1:2015, Thermoplastics pipes Determination of tensile properties Part 1: General test method3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 6259-1 apply.4 PrincipleSee ISO 6259-1:2015, Clause
37、4, applicable to thermoplastics materials covered by this part of ISO 6259.5 ApparatusSee ISO 6259-1:2015, Clause 5, applicable to thermoplastics materials covered by this part of ISO 6259.6 Test pieces6.1 Selection of the test pieces6.1.1 GeneralThe test pieces shall be obtained by die cutting or m
38、achining.NOTE 1 When the thickness of the pipe is less than or equal to 12 mm, the test pieces are to be die cut preferably. When the thickness of the pipes is greater than 12 mm the test pieces are to be machined preferably.INTERNATIONAL STANDARD ISO 6259-3:2015(E) ISO 2015 All rights reserved 1BS
39、EN ISO 6259-3:2015ISO 6259-3:2015(E)NOTE 2 Care ought to be taken when using die cutting to avoid damaging the test specimen or producing non parallel sides.6.1.2 Dimensions of test piecesTest pieces shall be either of Type 1, the shape and dimensions of which are given in Figure 1 and Table 1, Type
40、 2, the shape and dimensions of which are given in Figure 2 and Table 2, or Type 3, the shape and dimensions of which are given in Figure 3 and Table 3. The choice of test piece is dependent on the wall thickness of the pipe from which it is taken (see 6.2).NOTE 1 The Type 1 test piece is identical
41、to the Type 1B specified in ISO 527-2 1. The Type 2 test piece is identical to the Type 2 specified in ISO 6259-2 2. The Type 3 test piece is identical to the Type B test piece in ISO 13953 3.NOTE 2 In order to avoid slippage in the grips, it is recommended that the width of the ends of the test pie
42、ce (B) be increased in proportion to the thickness (en) in accordance with Formula (1):B = en+ 15 (mm) (1)Figure 1 Type 1 test pieceTable 1 Dimensions of Type 1 test piecesSymbol DescriptionDimensions mmA Overall length (min.) 150B Width of endsa20 1C Length of narrow, parallel-sided portion 60 1D W
43、idth of narrow, parallel-sided portion 10 0,2E Radius 60 1F Gauge length 50 1G Initial distance between grips 115 5H Thickness that of the pipeaThis dimension can be larger in accordance with Note 2 of 6.1.2.2 ISO 2015 All rights reservedBS EN ISO 6259-3:2015ISO 6259-3:2015(E)Figure 2 Type 2 test pi
44、eceTable 2 Dimensions of Type 2 test piecesSymbol DescriptionDimensions mmA Overall length (min.) 115B Width of ends 25 1C Length of narrow, parallel-sided portion33 2D Width of narrow, parallel-sided portion6+0,40E Small radius 14 1F Large radius 25 2G Gauge length 25 1H Initial distance between gr
45、ips 80 5I Thickness that of the pipeFigure 3 Type 3 test piece ISO 2015 All rights reserved 3BS EN ISO 6259-3:2015ISO 6259-3:2015(E)Table 3 Dimensions of Type 3 test piecesSymbol Description Dimensions mmA Overall length (min.) 250B Width of ends 100 3C Length of narrow, parallel-sided portion25 1D
46、Width of narrow, parallel-sided portion25 1E Radius 25 1G Gauge length 20 1H Initial distance between centres of loading pins165 5I Thickness that of the pipeaJ Diameter of hole 30 5aThe thickness of specimens taken from pipe of 50 mm thickness can be reduced by machining so that the reduced thickne
47、ss of the parallel gauge portion of the specimen shall be at least twice the width, .i.e. 50 mm. It is recommended to machine from both sides of the test specimens of 50 mm wall thickness so that the test piece originates from the centre of the pipe wall.6.2 Preparation of test piecesThe test pieces
48、 shall be taken from the centre of strips cut from the length of pipe in accordance with ISO 6259-1:2015, 6.2.1. The type of test piece shall be selected according to the thickness of the pipe as shown in Table 4.Table 4 Type of test piece to be usedNominal wall thickness of pipe enmmType of test pi
49、eceen 5 Type 25 25 Type 36.3 Cutting methodUse a cutting die with a profile corresponding to that of the Type 1 or Type 2 test piece, depending on thickness of the pipe, see ISO 6259-1:2015, 5.6.Cut out the test piece at ambient temperature, applying the die cutter to the inner surface of the strip and exerting a continuous uniform pressure.6.4 Machining methodSee ISO 6259-1:2015, 6.2.2.3.7 ConditioningSee ISO 6259-1:2015, Clause 7.4 ISO 2015 All rights reserve
