1、BSI Standards PublicationBS EN ISO 8492:2013Metallic materials Tube Flattening testBS EN ISO 8492:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 8492:2013.It supersedes BS EN ISO 8492:2004 which is withdrawn.The UK participation in its preparation was
2、entrusted to TechnicalCommittee ISE/101/2, Ductility testing.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. The
3、British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 82938 3ICS 77.040.10Compliance 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 Nov
4、ember 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8492 November 2013 ICS 77.040.10 Supersedes EN ISO 8492:2004English Version Metallic materials - Tube - Flattening test (ISO 8492:2013) Matriaux mtalliques - Tubes - Essai daplati
5、ssement (ISO 8492:2013) Metallische Werkstoffe - Rohr - Ringfaltversuch(ISO 8492:2013) This European Standard was approved by CEN on 28 October 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
6、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 official versions (English, French, Germa
7、n). 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 Austria, Belgium, Bulgaria, Croatia,
8、 Cyprus, 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 Unite
9、d Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN I
10、SO 8492:2013 EBS EN ISO 8492:2013EN ISO 8492:2013 (E) 3 Foreword This document (EN ISO 8492:2013) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals“ in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and steel fittings” the secretariat of wh
11、ich is held by UNI. This 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 May 2014, and conflicting national standards shall be withdrawn at the latest by May 2014. Attention is drawn to the possibility
12、 that some of the 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 8492:2004. According to the CEN-CENELEC Internal Regulations, the national standards organi
13、zations of the 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, M
14、alta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8492:2013 has been approved by CEN as EN ISO 8492:2013 without any modification. BS EN ISO 8492:2013ISO 8492:2013(E) ISO 2013 All ri
15、ghts reserved iiiContents PageForeword iv1 Scope . 12 Symbols, designations and units 13 Principle 14 Testing equipment 25 Test piece 26 Procedure. 27 Test report . 2BS EN ISO 8492:2013ISO 8492:2013(E)ForewordIISO (the International Organization for Standardization) is a worldwide federation of nati
16、onal 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 committee. Internat
17、ional 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.The procedures used to develop this document and those intende
18、d 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 in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.or
19、g/directivesAttention 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. Details of any patent rights identified during the development of the document will be in
20、 the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 164, Mechanical testing of
21、metals, Subcommittee SC 2, Ductility testing.This third edition cancels and replaces the second edition (ISO 8492:1998), of which it constitutes a minor revision.iv ISO 2013 All rights reservedBS EN ISO 8492:2013INTERNATIONAL STANDARD ISO 8492:2013(E)Metallic materials Tube Flattening test1 ScopeThi
22、s International Standard specifies a method for determining the ability of metallic tubes of circular cross-section to undergo plastic deformation by flattening. It may also be used to reveal the defects in the tubes.This International Standard is applicable to tubes having an outside diameter no gr
23、eater than 600 mm and a thickness no greater than 15 % of the outside diameter. The range of the outside diameter or thickness, for which this International Standard is applicable, may be more exactly specified in the relevant product standard.2 Symbols, designations and unitsSymbols, designations a
24、nd units for the flattening test are given in Table 1 and are shown in Figure 1.Table 1Symbol Designation Unita ab DHLWall thickness of the tubeInside width of flattened test pieceOutside diameter of the tubeDistance between platens measured under loadLength of the test piecemmmmmmmmmmaThe symbol T
25、is also used in steel tube standards.3 PrincipleFlattening the end of a tube or a test piece of specified length, cut from a tube in a direction perpendicular to the longitudinal axis of the tube, until the distance between platens measured under load in the direction of flattening reaches a value s
26、pecified in the relevant product standard see Figure 1, a) and b).In the case of close flattening, the internal surfaces of the test piece shall be in contact over at least half of the internal width b of the flattened test piece standard see Figure 1 c).a) b) c)Figure 1 ISO 2013 All rights reserved
27、 1BS EN ISO 8492:2013ISO 8492:2013(E)4 Testing equipmentThe test machine is capable of flattening the test piece to the prescribed distance H between two plane, parallel, rigid platens.The width of the platens shall exceed the width of the test piece after flattening, i.e. at least 1,6 D, and the le
28、ngth of the platens shall extend over the whole length of the test piece.5 Test piece5.1 The length of a test piece shall be no less than 10 mm and no more than 100 mm. The edges of the test piece may be rounded by filing or chamfered by other methods.NOTE Non-rounded or non-chamfered edges are perm
29、issible if the test result meets the test requirements.5.2 When the test is carried out on the end of a full-length tube, the tube shall be cut at right angles to the axis of the tube to a depth of at least 80 % of the tube outside diameter. The cut shall be at a distance from the end of the tube eq
30、ual to the length of the test piece.6 Procedure6.1 In general, the test shall be carried out at ambient temperature within the limits of 10 C to 35 C. The test carried out under controlled conditions shall be made at a temperature of 23 C 5 C.6.2 Place the test piece between two platens.6.3 Ensure t
31、hat the weld of the welded tubes is in a position as required by the relevant product standard.6.4 Flatten the test piece by moving the platens in a direction perpendicular to the longitudinal axis of the tube.6.5 In case of dispute, the rate of movement of the platens shall not exceed 25 mm/min.6.6
32、 Interpretation of the flattening test shall be carried out in accordance with the requirements of the relevant product standard. When these requirements are not specified, the test piece shall be considered to have passed the test if no cracks are visible without the use of magnifying aids. Slight
33、cracking at the edges shall not be considered a cause for rejection.7 Test reportA test report shall be provided when so specified in the relevant product standard. In this case, the test report shall include at least the following information:a) a reference to this International Standard, i.e. ISO
34、8492;b) identification of the test piece;c) dimensions of the test piece;d) distance between platens under load (H);e) position of the weld, if relevant;f) result of the test.2 ISO 2013 All rights reservedBS EN ISO 8492:2013This page deliberately left blankThis page deliberately left blankBSI is the
35、 national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group
36、 Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a de
37、pendable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British St
38、andards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsYou can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at where hard copies can also be purcha
39、sed. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.SubscriptionsOur range of subscription services are designed to make using standards easier for you. For further information on our subscrip
40、tion products go to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll always be up to date. You can keep in touch with standards developments and rec
41、eive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will automatically receive the latest hard copy of your standards when theyre revise
42、d or replaced. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licences can cover as few or as many users as you wish. With updates supplied as soo
43、n as theyre available, you can be sure your documentation is current. For further information, email .RevisionsOur British Standards and other publications are updated by amendment or revision. We continually improve the quality of our products and services to benefit your business. If you find an i
44、naccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.CopyrightAll the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that owns co
45、pyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or
46、 transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. Details and advice can be obtained from the Copyright & Licensing Department.Useful Contacts:Customer ServicesTel: +44 845 086 9001Email (orders): Email (enquiries): SubscriptionsTel: +44 845 086 9001Email: Knowledge CentreTel: +44 20 8996 7004Email: Copyright & LicensingTel: +44 20 8996 7070Email: NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
