1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Paints and varnishes Corrosion protection of steel structures by protective paint systemsPart 6: Laboratory performance test methods (ISO 12944-6:2018)BS EN ISO 12944-6:2018National forewordThis British Standard is the
2、UK implementation of EN ISO 129446:2018. It is identical to ISO 129446:2018. It supersedes BS EN ISO 129446:1998, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizati
3、ons represented on this committee 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 2018 Published by BSI Standards Limited 2018ISBN
4、 978 0 580 93270 0ICS 91.080.10; 87.020Compliance 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 31 March 2018.Amendments/corrigenda issued since publicationDate Text aff
5、ectedBRITISH STANDARDBS EN ISO 129446:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 129446February 2018ICS 87.020 Supersedes EN ISO 129446:1998EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCENCENELEC Management Centre: Avenue Marnix 17,
6、 B1000 Brussels 2018 CEN Ref. No. EN ISO 129446:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersPaints and varnishes Corrosion protection of steel structures by protective paint systems Part 6: Laboratory performance test methods (ISO 129446:
7、2018)Peintures et vernis Anticorrosion des structures en acier par systmes de peinture Partie 6: Essais de performance en laboratoire (ISO 129446:2018)Beschichtungsstoffe Korrosionsschutz von Stahlbauten durch Beschichtungssysteme Teil 6: Laborprfungen zur Bewertung von Beschichtungssystemen (ISO 12
8、9446:2018)This European Standard was approved by CEN on 22 January 2018.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. Uptodate lists and bibliographi
9、cal references concerning such national standards may be obtained on application to the CENCENELEC 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 responsibility o
10、f 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 Republic of Mac
11、edonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 129446:2018 (E)European forewordThis docume
12、nt (EN ISO 129446:2018) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by pub
13、lication of an identical text or by endorsement, at the latest by August 2018, and conflicting national standards shall be withdrawn at the latest by August 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be hel
14、d responsible for identifying any or all such patent rights.This document supersedes EN ISO 129446:1998.According to the CENCENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia
15、, 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, Turkey
16、and the United Kingdom.Endorsement noticeThe text of ISO 129446:2018 has been approved by CEN as EN ISO 129446:2018 without any modification.2BS EN ISO 129446:2018ISO 129446:2018Foreword ivIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 24 General 34.1 Relationship betwee
17、n artificial ageing and natural exposure 34.2 Additional performance tests . 35 Tests . 35.1 Test panels 35.1.1 Carbon steel . 35.1.2 Hot dip galvanized steel . 35.1.3 Thermal-sprayed metallic coatings . 45.2 Sampling of paints 45.3 Number of test panels . 45.4 Paint systems 45.5 Reference system 45
18、.6 Test procedures and duration 46 Paint system assessment 66.1 General . 66.2 Assessment before artificial ageing 66.3 Assessment after artificial ageing for the specified time 67 Test report . 7Annex A (normative) Scribe line for ISO 9227 test and ISO 129449 cyclic ageing test 9Annex B (normative)
19、 Cyclic ageing test 11Bibliography .12 ISO 2018 All rights reserved iiiContents PageBS EN ISO 129446:2018ISO 129446:2018ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Sta
20、ndards 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. International organizations, governmental and non-governmental, in liaison with ISO, also
21、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 intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In
22、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 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements
23、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 the Introduction and/or on the ISO list of patent declarations received (se
24、e www.iso.org/patents).Any trade name used in this document is information 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
25、 information about ISOs adherence to the World Trade Organization (WTO) 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 35, Paints and varnishes, Subcommittee SC 14, Protective paint sys
26、tems for steel structures.This second edition cancels and replaces the first edition (ISO 129446:1998), which has been technically revised.The main changes compared to the previous edition are as follows: the normative references have been updated; the terms and definitions have been revised; 4.2 “A
27、dditional performance tests” has been revised and the Note deleted; 5.1 “Test panels” has been revised; 5.4 “Paint systems” has been revised and requirements for maximum film thickness added; 5.6 “Test procedures and duration” has been revised and includes a revised Table 1; Table 1 “Test procedures
28、 for paint systems applied to carbon steel, hot dip galvanized steel or steel with thermal-sprayed metallic coating” has been divided into two separate tables, one containing categories C1 to C5 and one containing categories Im1 to Im3; the former Table 2 has been deleted; Clause 6 “Paint system ass
29、essment” has been revised; in 6.2 a new Table 3 “Assessment before artificial ageing” has been included; in 6.3 a new Table 4 “Assessment after artificial ageing for the specified time” has been included; in Clause 7 “Test report” the following items were added: “photographic documents ”, “thickness
30、 of zinc layer ”, and “thickness of the thermal-sprayed metallic coating ”;iv ISO 2018 All rights reservedBS EN ISO 129446:2018ISO 129446:2018 Annex A has been revised and Figures A.1 and A.2 have been added; a new normative Annex B “Cyclic ageing test” has been added; the former Annex B has been de
31、leted; a Bibliography has been added; the text has been editorially revised.A list of all parts in the ISO 12944 series can be found on the ISO website. ISO 2018 All rights reserved vBS EN ISO 129446:2018ISO 129446:2018IntroductionUnprotected steel in the atmosphere, in water and in soil is subject
32、to corrosion that can lead to damage. Therefore, to avoid corrosion damage, steel structures are normally protected to withstand the corrosion stresses to which they will be subjected during the service life required of the structure.There are different ways of protecting steel structures from corro
33、sion. ISO 12944 (all parts)deals with protection by paint systems and covers, in the various parts, all features that are important in achieving adequate corrosion protection. Additional or other measures are possible but require particular agreement between the interested parties.In order to ensure
34、 effective corrosion protection of steel structures, owners of such structures, planners, consultants, companies carrying out corrosion protection work, inspectors of protective coatings and manufacturers of coating materials need to have at their disposal state-of-the-art information in concise for
35、m on corrosion protection by paint systems. It is vital that such information is as complete as possible, unambiguous and easily understandable to avoid difficulties and misunderstandings between the parties concerned with the practical implementation of protection work.ISO 12944 (all parts)is inten
36、ded to give this information in the form of a series of instructions. It is written for those who have some technical knowledge. It is also assumed that the user of ISO 12944 (all parts)is familiar with other relevant International Standards, in particular those dealing with surface preparation.Alth
37、ough ISO 12944 (all parts)does not deal with financial and contractual questions, attention is drawn to the fact that, because of the considerable implications of inadequate corrosion protection, non-compliance with requirements and recommendations given in this document can result in serious financ
38、ial consequences.ISO 129441 defines the overall scope of ISO 12944. It gives some basic terms and definitions and a general introduction to the other parts of ISO 12944. Furthermore, it includes a general statement on health, safety and environmental protection, and guidelines for using ISO 12944 (a
39、ll parts)for a given project.This document provides a way of assessing paint systems by means of laboratory tests in order to be able to select the most suitable.Cyclic ageing testing according to Annex B is introduced within this document. It is currently used in C5 VH/ H and C4 VH. In case of C5 H
40、 and C4 VH the test regime including salt spray and condensation test can still be used as alternative to cyclic ageing test. For the future, it is intended to remove salt spray and condensation tests as alternative tests for C5 H and C4 VH.vi ISO 2018 All rights reservedBS EN ISO 129446:2018Paints
41、and varnishes Corrosion protection of steel structures by protective paint systems Part 6: Laboratory performance test methods (ISO 12944-6:2018)1 ScopeThis document specifies laboratory test methods and test conditions for the assessment of paint systems for the corrosion protection of carbon steel
42、 structures.The test results are intended to be considered as an aid in the selection of suitable paint systems and not as exact information for determining durability.This document covers protective paint systems designed for application to uncoated steel, hot dip galvanized steel according to ISO
43、1461 and steel surfaces with thermal-sprayed metallic coating according to ISO 2063-1 and ISO 2063-2.This document does not apply to protective paint systems for electroplated or painted steel.The environments for corrosivity categories C2 to C5 and Im1 to Im3 defined in ISO 12944-2 are considered.2
44、 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including a
45、ny amendments) applies.ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methodsISO 1513, Paints and varnishes Examination and preparation of test samplesISO 2063-1, Thermal spraying Zinc, aluminium and their alloys Part 1: Design considerations and
46、quality requirements for corrosion protection systemsISO 2063-2, Thermal spraying Zinc, aluminium and their alloys Part 2: Execution of corrosion protection systemsISO 2409, Paints and varnishes Cross-cut testISO 2808, Paints and varnishes Determination of film thicknessISO 2812-2, Paints and varnis
47、hes Determination of resistance to liquids Part 2: Water immersion methodISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingISO 4624, Paints and varnishes Pull-off test for adhesionISO 4628-2, Paints and varnishes Evaluation of degradation
48、of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blisteringINTERNATIONAL STANDARD ISO 12944-6:2018 ISO 2018 All rights reserved 1BS EN ISO 129446:2018ISO 12944-6:2018ISO 4628-3, Paints and varnishes Evaluation
49、of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 3: Assessment of degree of rustingISO 4628-4, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 4: Assessment of degree of crackingISO 4628-5, Paints and varnishes Evaluation of degradation of coatings Designati
