1、BSI Standards PublicationBS EN ISO 6259-1:2015Thermoplastics pipes Determination of tensilepropertiesPart 1: General test methodBS EN ISO 6259-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO6259-1:2015. It supersedes BS EN ISO 6259-1:2001 which iswith
2、drawn.The UK participation in its preparation was entrusted 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 con
3、tract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81208 8ICS 23.040.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the auth
4、ority of theStandards Policy and Strategy Committee on 30 April 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6259-1 April 2015 ICS 23.040.20 Supersedes EN ISO 6259-1:2001English Version Thermoplastics pipes - Determination of tens
5、ile properties - Part 1: General test method (ISO 6259-1:2015) Tubes en matires thermoplastiques - Dtermination des caractristiques en traction - Partie 1: Mthode gnrale dessai (ISO 6259-1:2015) Rohre aus Thermoplasten - Bestimmung der Eigenschaften im Zugversuch - Teil 1: Allgemeines Prfverfahren (
6、ISO 6259-1:2015) This European Standard was approved by CEN on 12 December 2014. 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 national standard without any alteration. Up-to-date lists and b
7、ibliographical 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 version in any other language made by translation under the res
8、ponsibility 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav R
9、epublic 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 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NO
10、RMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 national Members. Ref. No. EN ISO 6259-1:2015 EBS EN ISO 6259-1:2015EN ISO 6259-1:2015 (E) 3 Forewor
11、d This document (EN ISO 6259-1:2015) has been prepared by Technical Committee ISO/TC 138 “Plastics 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
12、European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2015, and conflicting national standards shall be withdrawn at the latest by October 2015. Attention is drawn to the possibility that some of the
13、 elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 6259-1:2001. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
14、following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan
15、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6259-1:2015 has been approved by CEN as EN ISO 6259-1:2015 without any modification. BS EN ISO 6259-1:2015ISO 6259-1:2015(E)Foreword ivIntroduction
16、 v1 Scope . 12 Normative reference . 13 Terms and definitions . 13.1 Geometric definitions 13.2 Definitions related to material characteristics 34 Principle 35 Apparatus . 36 Test Pieces . 46.1 Type of the test piece . 46.2 Preparation of test pieces 46.2.1 Sampling from the pipe 46.2.2 Selection of
17、 test pieces 56.3 Checking test pieces . 67 Conditioning 68 Test speed 69 Procedure. 610 Expression of results 710.1 Stress at yield . 710.2 Elongation at break . 710.3 Statistical parameters . 710.4 Retests 711 Test report . 8Bibliography 9 ISO 2015 All rights reserved iiiContents PageBS EN ISO 625
18、9-1:2015ISO 6259-1:2015(E)ForewordISO (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 i
19、n 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 Commis
20、sion (IEC) on all matters of electrotechnical 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 sho
21、uld be noted. This document was drafted in 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 id
22、entifying any or all such patent rights. 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 conve
23、nience of users and does not constitute an 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
24、 Supplementary information .The committee 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 specificatio
25、ns .This second edition cancels and replaces the first edition (ISO 6259-1:1997), 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 unplastic
26、ized poly(vinyl chloride) (PVC-U), chlorinated poly (vinyl chloride) (PVC-C), and high-impact poly (vinyl chloride) (PVC-HI) Part 3: Polyolefin pipesiv ISO 2015 All rights reservedBS EN ISO 6259-1:2015ISO 6259-1:2015(E)IntroductionThis part of ISO 6259 specifies a short-term tensile test method for
27、determining the tensile properties of thermoplastics 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 considerably with those in this test method,
28、 such as 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 not a quantitative assessment of lon
29、g-term pipe performance.ISO 6259 has been drawn up on the basis of ISO 527.12For 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 527.12However,
30、 let it be noted that ISO 52712is 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 test piece.ISO 52712specifies t
31、est 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 by machining.At present, ISO 62
32、59 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 materials (see the Foreword).
33、The basic specifications for the various materials are given in informative annexes in the relevant parts. ISO 2015 All rights reserved vBS EN ISO 6259-1:2015BS EN ISO 6259-1:2015Thermoplastics pipes Determination of tensile properties Part 1: General test method1 ScopeThe ISO 6259 series specifies
34、a method of determining the tensile properties of thermoplastics pipes, including the following properties: stress at yield; elongation at break.This part of ISO 6259 is applicable to all types of thermoplastics pipe, regardless of their intended use.2 Normative referenceThe following documents, in
35、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 1167-1:2006, Thermoplastics pipe
36、s, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General methodISO 2602, Statistical interpretation of test results Estimation of the mean Confidence intervalISO 5893, Rubber and plastics test equipment Tensile, flexural and compres
37、sion types (constant rate of traverse) SpecificationISO 6259-2:1997, Thermoplastics pipes Determination of tensile properties 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)ISO 6259-3:2015, The
38、rmoplastics pipes Determination of tensile properties Part 3: Polyolefin pipes3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1 Geometric definitions3.1.1gauge length at breakLdistance between the gauge marks on the central part of the test speci
39、men at breakNote 1 to entry: It is expressed in millimetres (mm).INTERNATIONAL STANDARD ISO 6259-1:2015(E) ISO 2015 All rights reserved 1BS EN ISO 6259-1:2015ISO 6259-1:2015(E)3.1.2initial cross-sectionAproduct of initial width and thickness of a test specimen (i.e. A = bh)Note 1 to entry: It is exp
40、ressed in square millimetres (mm2).3.1.3initial gauge lengthL0initial distance between the gauge marks on the central part of the test specimenNote 1 to entry: It is expressed in millimetres (mm).Note 2 to entry: The values of the gauge length that are indicated for the specimen types in the differe
41、nt parts of ISO 52712represent the relevant maximum gauge length.3.1.4nominal outside diameterdnspecified outside diameter, assigned to a nominal size DN/ODNote 1 to entry: It is expressed in millimetres (mm).3.1.5nominal sizeDN/ODnumerical designation of the size of a component, other than a compon
42、ent designated by thread size, which is a convenient round number, approximately equal to the manufacturing dimension, related to the outside diameterNote 1 to entry: It is expressed in millimetres (mm).3.1.6nominal wall thicknessennumerical designation of the wall thickness of a component, which is
43、 a convenient round number, approximately equal to the manufacturing dimensionNote 1 to entry: It is expressed in millimetres (mm).Note 2 to entry: For thermoplastics components, the value of the nominal wall thickness, en, is identical to the specified minimum wall thickness at any point, emin.3.1.
44、7thicknesshsmaller initial dimension of the rectangular cross section in the central part of a test specimenNote 1 to entry: It is expressed in millimetres (mm).3.1.8widthblarger initial dimension of the rectangular cross section in the central part of a test specimenNote 1 to entry: It is expressed
45、 in millimetres (mm).2 ISO 2015 All rights reservedBS EN ISO 6259-1:2015ISO 6259-1:2015(E)3.2 Definitions related to material characteristics3.2.1elongation at breakbcalculated from the gauge length at breakNote 1 to entry: It is expressed as a percentage (%).3.2.2force at yieldFforce measured at yi
46、eldNote 1 to entry: It is expressed in Newtons (N).3.2.3stress at yieldystress measured at the yield strainNote 1 to entry: It is expressed in megapascals (MPa).3.2.4yieldtransition from elastic to plastic deformation usually characterised by a decrease or shoulder in the stress-strain curve4 Princi
47、pleTest pieces of given shape and dimensions are obtained from a thermoplastics pipe, in the longitudinal direction, by cutting or machining.The tensile properties are measured using a test machine under specified conditions.5 Apparatus5.1 Tensile-testing machine, complying with ISO 5893 and meeting
48、 the specifications given in 5.2, 5.3, and 5.4.NOTE The use of computer-controlled machines in accordance with ISO 527-1:20121is an option.5.2 Grips, for holding the test piece and attached to the machine so that the major axis of the test piece coincides with the direction of pull through the centr
49、eline of the assembly. This can be achieved, for example, by using pins in the grips to centre.The test piece shall be held such that slip relative to the grips is prevented as far as possible and this shall be carried out with the type of grip that maintains or increases pressure on the test piece as the force applied to the test piece increases.The clamping system shall not cause premature fracture of the test piece at the grips.It might be necessary to pre-stress the test specimen to obtain corre
