BS EN ISO 9227-2017 Corrosion tests in artificial atmospheres Salt spray tests《人造大气腐蚀试验 盐雾试验》.pdf

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1、Corrosion tests in artificial atmospheres Salt spray tests (ISO 9227:2017)BS EN ISO 9227:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Missing image: D:/PAYLOAD/Filestore/Workflows and Output/BS-EN-ISO XML Body Final/2017-06-12 12.41.48/source/30284320.pdf.Nati

2、onal forewordThis British Standard is the UK implementation of EN ISO 9227:2017. It supersedes BS EN ISO 9227:2012 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ISE/NFE/8, Corrosion of metals and alloys.A list of organizations represented on this com

3、mittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 83221 5ICS 19.04

4、0; 77.060Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affected BRITISH STANDARDBS EN ISO

5、 9227:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9227 April 2017 ICS 77.060 Supersedes EN ISO 9227:2012English Version Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2017) Essais de corrosion en atmosphres artificielles - Essais aux brouillards salins (ISO 9

6、227:2017) Korrosionsprfungen in knstlichen Atmosphren - Salzsprhnebelprfungen (ISO 9227:2017) This European Standard was approved by CEN on 28 February 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the

7、 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 official versions (English, Frenc

8、h, 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 Austria, Belgium, Bulgaria,

9、Croatia, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

10、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 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Member

11、s. Ref. No. EN ISO 9227:2017 EBS EN ISO 9227:2017EN ISO 9227:2017 (E) 3 European foreword This document (EN ISO 9227:2017) has been prepared by Technical Committee ISO/TC 156”Corrosion of metals and alloys” in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic coatings,

12、including for corrosion protection and corrosion testing of metals and alloys” the secretariat of which is held by BSI. 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 October 2017, and conflictin

13、g national standards shall be withdrawn at the latest by October 2017. 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 held responsible for identifying any or all such patent rights. This document s

14、upersedes EN ISO 9227:2012. 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, Estonia, Finland, Former Yugoslav Republ

15、ic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 9227:2017 has be

16、en approved by CEN as EN ISO 9227:2017 without any modification. ISO 9227:2017(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 24 Principle 35 Test solutions . 35.1 Preparation of the sodium chloride solution 35.2 pH adjustment . 35.2.1 pH of the salt solution

17、 . 35.2.2 Neutral salt spray (NSS) test 35.2.3 Acetic acid salt spray (AASS) test 35.2.4 Copper-accelerated acetic acid salt spray (CASS) test 45.3 Filtration . 46 Apparatus . 46.1 Component protection . 46.2 Spray cabinet 46.3 Heater and temperature control 46.4 Spraying device . 46.5 Collecting de

18、vices . 56.6 Re-use . 57 Method for evaluating cabinet corrosivity 67.1 General . 67.2 Reference specimens . 67.3 Arrangement of the reference specimens 67.4 Determination of mass loss (mass per area) 77.5 Satisfactory performance of cabinet 78 Test specimens 79 Arrangement of the test specimens 810

19、 Operating conditions . 811 Duration of tests 912 Treatment of test specimens after test 912.1 General . 912.2 Non-organic coated test specimens: metallic and/or inorganic coated 912.3 Organic coated test specimens 912.3.1 Scribed organic coated test specimens . 912.3.2 Organic coated but not scribe

20、d test specimens 1013 Evaluation of results 1014 Test report 10Annex A (informative) Example schematic diagram of one possible design of spray cabinet with means for optional treating fog exhaust and drain .12Annex B (informative) Complementary method for evaluating cabinet corrosivity using zinc re

21、ference specimens .14Annex C (normative) Preparation of specimens with organic coatings for testing 16Annex D (normative) Required supplementary information for testing test specimens with organic coatings .17 ISO 2017 All rights reserved iiiContents PageBS EN ISO 9227:2017ISO 9227:2017(E)Foreword v

22、Introduction vi1 Scope . 12 Normative references 13 Terms and definitions . 24 Principle 35 Test solutions . 35.1 Preparation of the sodium chloride solution 35.2 pH adjustment . 35.2.1 pH of the salt solution . 35.2.2 Neutral salt spray (NSS) test 35.2.3 Acetic acid salt spray (AASS) test 35.2.4 Co

23、pper-accelerated acetic acid salt spray (CASS) test 45.3 Filtration . 46 Apparatus . 46.1 Component protection . 46.2 Spray cabinet 46.3 Heater and temperature control 46.4 Spraying device . 46.5 Collecting devices . 56.6 Re-use . 57 Method for evaluating cabinet corrosivity 67.1 General . 67.2 Refe

24、rence specimens . 67.3 Arrangement of the reference specimens 67.4 Determination of mass loss (mass per area) 77.5 Satisfactory performance of cabinet 78 Test specimens 79 Arrangement of the test specimens 810 Operating conditions . 811 Duration of tests 912 Treatment of test specimens after test 91

25、2.1 General . 912.2 Non-organic coated test specimens: metallic and/or inorganic coated 912.3 Organic coated test specimens 912.3.1 Scribed organic coated test specimens . 912.3.2 Organic coated but not scribed test specimens 1013 Evaluation of results 1014 Test report 10Annex A (informative) Exampl

26、e schematic diagram of one possible design of spray cabinet with means for optional treating fog exhaust and drain .12Annex B (informative) Complementary method for evaluating cabinet corrosivity using zinc reference specimens .14Annex C (normative) Preparation of specimens with organic coatings for

27、 testing 16Annex D (normative) Required supplementary information for testing test specimens with organic coatings .17 ISO 2017 All rights reserved iiiContents PageBS EN ISO 9227:2017ISO 9227:2017(E)Bibliography .18iv ISO 2017 All rights reservedBS EN ISO 9227:2017ISO 9227:2017(E)Bibliography .18iv

28、ISO 2017 All rights reserved ISO 9227:2017(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 membe

29、r body interested in 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 Elec

30、trotechnical Commission (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 o

31、f ISO documents should 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 h

32、eld responsible for identifying 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 inform

33、ation given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WT

34、O) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys.This fourth edition cancels and replaces the third edition (ISO 9227:2012), which has been tec

35、hnically revised. The main technical changes are as follows: new definitions for reference material, reference specimen, test specimen and substitute specimen have been implemented; checking of the test apparatus during test operation has been made possible; Clause 4 has been added, with some of its

36、 text moved from the scope; Clause 7 has been summarized. ISO 2017 All rights reserved vBS EN ISO 9227:2017ISO 9227:2017(E)IntroductionThere is seldom a direct relation between resistance to the action of salt spray and resistance to corrosion in other media, because several factors influencing the

37、progress of corrosion, such as the formation of protective films, vary greatly with the conditions encountered. Therefore, the test results should not be regarded as a direct guide to the corrosion resistance of the tested metallic materials in all environments where these materials might be used. A

38、lso, the performance of different materials during the test should not be taken as a direct guide to the corrosion resistance of these materials in service.Nevertheless, the method described gives a means of checking that the comparative quality of a metallic material, with or without corrosion prot

39、ection, is maintained.Different metallic substrates (metals) cannot be tested in direct comparison in accordance to their corrosion resistances in salt spray tests. Comparative testing is only applicable for the same kind of substrate.Salt spray tests are generally suitable as corrosion protection t

40、ests for rapid analysis for discontinuities, pores and damage in organic and inorganic coatings. In addition, for quality control purposes, comparison can be made between specimens coated with the same coating. As comparative tests, however, salt spray tests are only suitable if the coatings are suf

41、ficiently similar in nature.It is often not possible to use results gained from salt spray testing as a comparative guide to the long-term behaviour of different coating systems, since the corrosion stress during these tests differs significantly from the corrosion stresses encountered in practice.v

42、i ISO 2017 All rights reservedBS EN ISO 9227:2017ISO 9227:2017(E)IntroductionThere is seldom a direct relation between resistance to the action of salt spray and resistance to corrosion in other media, because several factors influencing the progress of corrosion, such as the formation of protective

43、 films, vary greatly with the conditions encountered. Therefore, the test results should not be regarded as a direct guide to the corrosion resistance of the tested metallic materials in all environments where these materials might be used. Also, the performance of different materials during the tes

44、t should not be taken as a direct guide to the corrosion resistance of these materials in service.Nevertheless, the method described gives a means of checking that the comparative quality of a metallic material, with or without corrosion protection, is maintained.Different metallic substrates (metal

45、s) cannot be tested in direct comparison in accordance to their corrosion resistances in salt spray tests. Comparative testing is only applicable for the same kind of substrate.Salt spray tests are generally suitable as corrosion protection tests for rapid analysis for discontinuities, pores and dam

46、age in organic and inorganic coatings. In addition, for quality control purposes, comparison can be made between specimens coated with the same coating. As comparative tests, however, salt spray tests are only suitable if the coatings are sufficiently similar in nature.It is often not possible to us

47、e results gained from salt spray testing as a comparative guide to the long-term behaviour of different coating systems, since the corrosion stress during these tests differs significantly from the corrosion stresses encountered in practice.vi ISO 2017 All rights reserved Corrosion tests in artifici

48、al atmospheres Salt spray tests1 ScopeThis document specifies the apparatus, the reagents and the procedure to be used in conducting the neutral salt spray (NSS), acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray (CASS) tests for assessment of the corrosion resistance of me

49、tallic materials, with or without permanent or temporary corrosion protection.It also describes the method employed to evaluate the corrosivity of the test cabinet environment.It does not specify the dimensions or types of test specimens, the exposure period to be used for a particular product, or the interpretation of results. Such details are provided in the appropriate product specifications.The salt spray tests are particularly useful for detecting discontinuities, such as pores and other defects, in certain metallic, organic, anodic oxi