1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 527-2:2012Plastics Determination oftensile propertiesPart 2: Test conditions for moulding andextrusion plasticsBS EN ISO 527-2:2012 BRITISH STANDARDNational forewordThi
2、s British Standard is the UK implementation of . It supersedes BSEN ISO 527-2:1996 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/21, Testing of plastics.A list of organizations represented on this committee can beobtained on request to its secreta
3、ry.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 70623 3ICS 83.080.01Compliance with a British Standard cannot conf
4、er immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 527-2 February 2012 ICS 83.080.01 Sup
5、ersedes EN ISO 527-2:1996English Version Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:2012)Plastiques - Dtermination des proprits en traction - Partie 2: Conditions dessai des plastiques pour moulage et extrusion (ISO 527-2:2
6、012) Kunststoffe - Bestimmung der Zugeigenschaften - Teil 2: Prfbedingungen fr Form- und Extrusionsmassen (ISO 527-2:2012) This European Standard was approved by CEN on 14 February 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givi
7、ng 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three offi
8、cial 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 has the same status as the official versions. CEN members are the national standards bodies of
9、 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
10、Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 527-2:2012:
11、 EBS EN ISO 527-2:2012EN ISO 527-2:2012 (E) 3 Foreword This document (EN ISO 527-2:2012) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the st
12、atus of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements of this document may be the sub
13、ject 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 527-2:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
14、 this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
15、land, Turkey and the United Kingdom. Endorsement notice The text of ISO 527-2:2012 has been approved by CEN as a EN ISO 527-2:2012 without any modification. BS EN ISO 527-2:2012ISO 527-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms and de
16、finitions . 24 Principle and methods . 25 Apparatus 25.1 General . 25.2 Extensometer . 25.3 Recording of data 26 Test specimens 26.1 Shape and dimensions 26.2 Preparation of test specimens . 36.3 Gauge marks . 36.4 Checking the test specimens . 36.5 Anisotropy . 36.6 Number of test specimens 37 Cond
17、itioning . 38 Procedure 39 Calculation and expression of results . 310 Precision 411 Test report . 4Annex A (informative) Small specimens . 6Annex B (informative) Precision statement . 8Bibliography . 11BS EN ISO 527-2:2012ISO 527-2:2012(E)ForewordISO (the International Organization for Standardizat
18、ion) 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 r
19、epresented 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
20、are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internatio
21、nal 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 527-2 was prep
22、ared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties.This second edition cancels and replaces the first edition (ISO 527-2:1993), which has been technically revised.ISO 527 consists of the following parts, under the general title Plastics Determination of tensile
23、 properties: Part 1: General principles Part 2 :Test conditions for moulding and extrusion plastics Part 3: Test conditions for films and sheets Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites Part 5: Test conditions for unidirectional fibre-reinforced plast
24、ic compositesiv ISO 2012 All rights reservedBS EN ISO 527-2:2012INTERNATIONAL STANDARD ISO 527-2:2012(E)Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics1 Scope1.1 This part of ISO 527 specifies the test conditions for determining the tensile pr
25、operties of moulding and extrusion plastics, based upon the general principles given in ISO 527-1.1.2 The methods are selectively suitable for use with the following range of materials: rigid and semi-rigid thermoplastics moulding, extrusion and cast materials, including compounds filled and reinfor
26、ced by, for example, short fibres, small rods, plates or granules but excluding textile fibres (see ISO 527-4 and ISO 527-5). See ISO 527-1:2012, Clause 3 for the definition of “rigid” and “semi-rigid”. rigid and semi-rigid thermosetting moulding and cast materials, including filled and reinforced c
27、ompounds but excluding textile fibres as reinforcement (see ISO 527-4 and ISO 527-5); thermotropic liquid crystal polymers.The methods are not normally suitable for use with rigid cellular materials or sandwich structures containing cellular material. For rigid cellular materials see ISO 1926.The me
28、thods are not suitable for flexible films and sheets, of thickness smaller than 1 mm, see ISO 527-3.1.3 The methods are applied using specimens which may be either moulded to the chosen dimensions or machined, cut or punched from injection- or compression-moulded plates. The multipurpose test specim
29、en is preferred (see ISO 20753).2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl
30、ies.ISO 293, Plastics Compression moulding of test specimens of thermoplastic materialsISO 294-1, Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimensISO 295, Plastics Compression moulding of test spe
31、cimens of thermosetting materialsISO 527-1:2012, Plastics Determination of tensile properties Part 1: General principlesISO 2818, Plastics Preparation of test specimens by machiningISO 10724-1, Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 1: Ge
32、neral principles and moulding of multipurpose test specimensISO 11403-3, Plastics Acquisition and presentation of comparable multipoint data Part 3: Environmental influences on propertiesISO 20753, Plastics Test specimens ISO 2012 All rights reserved 1BS EN ISO 527-2:2012ISO 527-2:2012(E)3 Terms and
33、 definitionsSee ISO 527-1: 2012, Clause 3.4 Principle and methodsSee ISO 527-1:2012, Clause 4.5 Apparatus5.1 GeneralSee ISO 527-1:2012, Clause 5, specifically 5.1.1 to 5.1.4.5.2 ExtensometerFor this part of ISO 527, a gauge length of 75 mm is preferred when a multipurpose test specimen is used.A gau
34、ge length of 50 mm is also acceptable for quality-control purposes or where specified.If strains are recorded only on one side of the test specimen, ensure that low strains are not falsified by bending, which may result from even faint misalignment and initial warpage of the test specimen and which
35、generates strain differences between opposite surfaces of the test specimen.NOTE Increasing the gauge length leads to higher accuracy, especially for the modulus determination. The absolute accuracy of the measurement of elongation required for a 1 % accuracy of modulus determination is 1,5 m. This
36、is less severe than the 1 m needed if a gauge length of 50 mm is used. Furthermore, necking outside of the gauge length will be less frequent.5.3 Recording of dataSee ISO 527-1:2012, 5.1.6.NOTE For the determination of the tensile modulus under the conditions v = 1mm/min, L0= 75mm, L = 115 mm and r
37、= 0,000 5 mm, the recording frequency for the strain signal greater than or equal to 22 s-1 would be appropriate according to ISO 527-1:2012, Equation 1. This frequency increases as the gauge length increases. With larger gauge length the absolute elongation measured by the extensometer is larger fo
38、r the same crosshead displacement, i.e the recording instrument will see more data points in the same time span.6 Test specimens6.1 Shape and dimensionsWherever possible, the test specimens shall be dumb-bell-shaped types 1A and 1B, as shown in Figure 1 and Table 1. Type 1A shall be used for directl
39、y injection-moulded multipurpose test specimens, type 1B for machined specimens. Type 1A may also be used for compression-moulded specimens. For the use of proportionally scaled miniaturized specimens, see Annex A and/or ISO 20753.NOTE 1 At 4 mm thickness, specimen types 1A and 1B are identical to t
40、he multipurpose test specimens according to ISO 3167, types A and B, respectively, and to types A1 and A2 of ISO 20753.For purposes where large numbers of test specimens are to be exposed in limited space, for example, during analysis of environmental influences due to radiation, heat and/or chemica
41、ls (see ISO 11403-3), small test specimens of type C of ISO 20753 can be used. In such cases, frequently only the relative change of strength is of interest, and specimens of type CW are particularly useful. To accommodate wall thicknesses of the final application, thicknesses different from those p
42、referred in ISO 20753 may be used.NOTE 2 Other miniaturized specimens with different scale factors are defined in ISO 207532 ISO 2012 All rights reservedBS EN ISO 527-2:2012ISO 527-2:2012(E)6.2 Preparation of test specimensTest specimens shall be either directly injection- or compression-moulded fro
43、m 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, or obtained from cast or extruded plates (sheet). The moulding conditions shall be in
44、accordance with the relevant International Standard for the material or, if none exists, agreed between the interested parties.Strict control of all conditions of the specimen preparation is essential to ensure that all test specimens in a set are actually in the same state.All surfaces of the test
45、specimen shall be free from visible flaws, scratches or other imperfections. From moulded specimens, all flash, if present, shall be removed, taking care not to damage the moulded surface.Test specimens from finished goods shall be taken from flat areas or zones having minimum curvature. For reinfor
46、ced plastics, test specimens should not be machined to reduce their thickness unless absolutely necessary. Test specimens with machined surfaces will not give results comparable to specimens having non-machined surfaces.6.3 Gauge marksSee ISO 527-1:2012, 6.3.6.4 Checking the test specimensSee ISO 52
47、7-1:2012, 6.4.6.5 AnisotropyInjection moulded and extruded plates, as well as finished goods, exhibit some degree of anisotropy as a result of flow-induced orientation. The direction dependence of the tensile properties can be assessed by machining specimens parallel and normal to the flow direction
48、 characterizing the moulding process. In the absence of information on such directions, specimens shall be machined in directions as agreed between the interested parties.6.6 Number of test specimensSee ISO 527-1:2012, Clause 7.7 ConditioningSee ISO 527-1:2012, Clause 8.8 ProcedureSee ISO 527-1:2012
49、, Clause 9.For measurement of the tensile modulus (see ISO 527-1:2012, 3.9), the speed of testing shall be 1 mm/min for specimen types 1A and 1B (see Figure 1). This corresponds to a strain rate of approximately 1 % min-1. For small specimens see Annex A.9 Calculation and expression of resultsSee ISO 527-1:2012, Clause 10. ISO 2012 All rights reserved 3BS EN ISO 527-2:2012ISO 527-2:2012(E)10 PrecisionSee Annex B (informative).11 Test reportThe test report shall include the following information:a) a reference to thi
