1、November 2015 English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.20!%GNM“2364342www.din.d
2、eDIN EN ISO 6259-3Thermoplastics pipes Determination of tensile properties Part 3: Polyolefin pipes (ISO 6259-3:2015);English version EN ISO 6259-3:2015,English translation of DIN EN ISO 6259-3:2015-11Rohre aus Thermoplasten Bestimmung der Eigenschaften im Zugversuch Teil 3: Polyolefin-Rohre (ISO 62
3、59-3:2015);Englische Fassung EN ISO 6259-3:2015,Englische bersetzung von DIN EN ISO 6259-3:2015-11Tubes en matires thermoplastiques Dtermination des caractristiques en traction Partie 3: Tubes en polyolfines (ISO 6259-3:2015);Version anglaise EN ISO 6259-3:2015,Traduction anglaise de DIN EN ISO 6259
4、-3:2015-11www.beuth.deDocument comprises 16 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.10.15 DIN EN ISO 6259-3:2015-11 2 A comma is used as the decimal marker. National foreword This document (EN ISO 6259-3:2015) has been
5、prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and values for the transport of fluids” in collaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was
6、 DIN-Normenausschuss Kunststoffe (DIN Standards Committee Plastics), Working Committee NA 054-05-02 AA Prfverfahren fr Rohre. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 527-1 DIN EN ISO 527-1 ISO 6259-1 DIN EN ISO 6259-1 National A
7、nnex NA (informative) Bibliography DIN EN ISO 527-1, Plastics Determination of tensile properties Part 1: General principles DIN EN ISO 6259-1, Thermoplastics pipes Determination of tensile properties Part 1: General test method EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6259-3 June 20
8、15 ICS 23.040.20 English Version Thermoplastics pipes - Determination of tensile properties Part 3: Polyolefin pipes (ISO 6259-3:2015) Tubes en matires thermoplastiques - Dtermination des caractristiques en traction - Partie 3: Tubes en polyolfines (ISO 6259-3:2015) Rohre aus Thermoplasten - Bestimm
9、ung 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 to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a
10、national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A
11、 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 has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cypr
12、us, Czech Republic, Denmark, 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 United Kin
13、gdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T EUR O P EN D E NOR M A L I S ATI O N EUR O P I S C HES KOM I T E E F R NOR M UNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationa
14、l Members. Ref. No. EN ISO 6259-3:2015 E European foreword .3Introduction 41 Scope . 52 Normative reference . 53 Terms and definitions . 54 Principle 55 Apparatus . 56 Test pieces . 56.1 Selection of the test pieces 56.1.1 General 56.1.2 Dimensions of test pieces . 66.2 Preparation of test pieces 86
15、.3 Cutting method . 86.4 Machining method . 87 Conditioning 88 Test speed 99 Procedure. 910 Expression of results 911 Test report . 9Annex A (informative) Polyethylene pipes Basic specification . 10Annex B (informative) Cross-linked polyethylene pipes Basic specification . 11Annex C (informative) Po
16、lypropylene pipes Basic specification . 12Annex D (informative) Polybutene pipes Basic specification . 13Bibliography .14Contents PageDIN EN ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)2 European foreword This document (EN ISO 6253-3:2015) has been prepared by Technical Committee ISO/TC 138 “Plastics p
17、ipes, 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 an iden
18、tical 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 not be he
19、ld 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, Estoni
20、a, 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 The te
21、xt of ISO 6259-3:2015 has been approved by CEN as EN ISO 6259-3:2015 without any modification. This second edition cancels and replaces 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 Determ
22、ination of tensile properties: Part 1: General test method Part 2: Pipes made of unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly(vinyl chloride) (PVC-C) and high-impact poly(vinyl chloride) (PVC-HI) Part 3: Polyolefin pipesDIN EN ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)3 IntroductionTh
23、is part of ISO 6259 specifies a method for determining the tensile properties of polyolefin pipes.It can provide data 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 consi
24、derably with those in this test method, such applications requiring the appropriate impact, creep and fatigue tests.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
25、not a quantitative assessment of long term pipe performance.ISO 6259 has been drawn up on the basis of ISO 527.For 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
26、 can be made to ISO 527.However, let it be noted that ISO 527 is applicable to materials in sheet form, whereas ISO 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
27、test piece.ISO 527 specifies test pieces a few millimetres thick, whereas the thickness of a pipe can be in excess 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 b
28、y machining.At present, ISO 6259 comprises three parts. The first part gives the general conditions under which the 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
29、 materials (see the Foreword).The basic specifications for the various materials are given in informative annexes in the relevant parts.DIN EN ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)4 1 ScopeThis part of ISO 6259 specifies a method of determining the tensile properties of polyolefin (polyethylene,
30、 cross-linked 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 docu
31、ments, in whole 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 D
32、etermination 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 6259-1:20
33、15, Clause 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 c
34、utting or machining.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.DIN EN ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)5 NOTE 2 Care ou
35、ght 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 2, the shape and dimensions of which are given in
36、 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 to the Type 1B specified in ISO 527-2 1. The Type
37、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 piece (B) be increased in proportion to the thickness
38、 (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 Width of narrow, parallel-sided portion 10 0,2E Rad
39、ius 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.DIN EN ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)6 Figure 2 Type 2 test pieceTable 2 Dimensions of Type 2 test piecesSymbol DescriptionDimensio
40、ns 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 grips 80 5I Thickness that of the pipeFigure 3 Type 3 test pieceDIN EN
41、ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)7 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 Width of narrow, parallel-sided portion25 1E Radius 25 1G Gauge length 20 1H Initial dist
42、ance 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 thickness of the parallel gauge portion of the specimen shall be at least twice the width, .i.e.
43、 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 shall be taken from the centre of strips cut from the length of pipe in accordance with
44、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 pieceen 5 Type 25 25 Type 36.3 Cutting methodUse a cutting die with a profile corresponding
45、 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
46、.3.7 ConditioningSee ISO 6259-1:2015, Clause 7.DIN EN ISO 6259-3:2015-11 EN ISO 6259-3:2015 (E)8 8 Test speedThe test speed, i.e. the speed of separation of the grips, shall depend on the thickness of the pipes, as specified in Table 5. The tolerance on test speed is in accordance with ISO 527-1:201
47、2, Table 1.If other speeds are used, the correlation between these and the specified speed shall be shown. The speed specified shall be used in cases of dispute.Table 5 Test speedsNominal wall thickness of pipe enmmType of test pieceTest speed mm/minen 5 Type 2 1005 25 Type 3 109 ProcedureSee ISO 6259-1:2015, Clause 9.NOTE If there is a specified requirement for elongation of the test pieces, the test can be stopped when this requireme
