1、BSI Standards PublicationBS EN ISO 4628-10:2016Paints and varnishes Evaluation of degradation ofcoatings Designation ofquantity and size of defects,and of intensity of uniformchanges in appearancePart 10: Assessment of degree of filiformcorrosionBS EN ISO 4628-10:2016 BRITISH STANDARDNational forewo
2、rdThis British Standard is the UK implementation of EN ISO4628-10:2016. It supersedes BS EN ISO 4628-10:2003 which iswithdrawn. The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of organizations represented on this committee can beobta
3、ined 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 British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 86614 2ICS 87.040Compliance with a B
4、ritish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 29 February 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCH
5、E NORM EN ISO 4628-10 February 2016 ICS 87.040 Supersedes EN ISO 4628-10:2003English Version Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 10: Assessment of degree of filiform corro
6、sion (ISO 4628-10:2016) Peintures et vernis - valuation de la dgradation des revtements - Dsignation de la quantit et de la dimension des dfauts, et de lintensit des changements uniformes daspect - Partie 10: valuation du degr de corrosion filiforme (ISO 4628-10:2016) Beschichtungsstoffe - Beurteilu
7、ng von Beschichtungsschden - Bewertung der Menge und der Gre von Schden und der Intensitt von gleichmigen Vernderungen im Aussehen - Teil 10: Bewertung der Filiformkorrosion (ISO 4628-10:2016)This European Standard was approved by CEN on 19 December 2015. CEN members are bound to comply with the CEN
8、/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 bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Cen
9、tre 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 of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as th
10、e official versions. CEN members are the national standards bodies of 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, Nether
11、lands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All right
12、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4628-10:2016 EBS EN ISO 4628-10:2016EN ISO 4628-10:2016 (E) 3 European foreword This document (EN ISO 4628-10:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in
13、 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 publication of an identical text or by endorsement, at the latest by August 2016, and conflicting nati
14、onal standards shall be withdrawn at the latest by August 2016. 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 supersed
15、es EN ISO 4628-10:2003. 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 Republic o
16、f Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4628-10:2016 has been approv
17、ed by CEN as EN ISO 4628-10:2016 without any modification. BS EN ISO 4628-10:2016ISO 4628-10:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Assessment . 24.1 General . 24.2 Method 1. 24.3 Method 2. 25 Expression of results 26 Test report . 2Annex A (informative) Pi
18、ctorial examples of different ratings for the length of the longest filament L and the most frequent filament length M 5Bibliography 8 ISO 2016 All rights reserved iiiContents PageBS EN ISO 4628-10:2016ISO 4628-10:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide
19、 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 represented on that
20、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.The procedures used to develop this documen
21、t 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 should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives,
22、 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 identifying any or all such patent rights. Details of any patent rights identified during the development o
23、f 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 convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific
24、 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 - Supplementary informationThe committee responsible for this document is ISO/TC 35, Paints and varnishe
25、s, Subcommittee SC 9, General test methods for paints and varnishes.This second edition cancels and replaces the first edition (ISO 4628-10:2003), which has been technically revised with the following changes:a) a normative reference to ISO 13076 for illumination for the assessment has been added.IS
26、O 4628 consists of the following parts, under the general title Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance: Part 1: General introduction and assessment of general defects Part 2: Assessment
27、 of degree of blistering Part 3: Assessment of degree of rusting Part 4: Assessment of degree of cracking Part 5: Assessment of degree of flaking Part 6: Assessment of degree of chalking by tape method Part 7: Assessment of chalking by velvet method Part 8: Assessment of degree of delamination and c
28、orrosion around a scribe or other artificial defect Part 10: Assessment of degree of filiform corrosioniv ISO 2016 All rights reservedBS EN ISO 4628-10:2016INTERNATIONAL STANDARD ISO 4628-10:2016(E)Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects
29、, and of intensity of uniform changes in appearance Part 10: Assessment of degree of filiform corrosion1 ScopeThis part of ISO 4628 specifies a method for assessing the amount of filiform corrosion developed from a scribed mark by measuring the length of the longest filament L and the most frequent
30、length M of filaments.Pictorial examples provided in Annex A of this part of ISO 4628 illustrate different ratings for the length of the longest filament L and the most frequent length M of the filaments. A comparison of the test panels with the 12 pictures in Annex A does not supersede the obligato
31、ry numerical assessment (method 1 or 2).ISO 4628-1 defines a system used for designating the quantity and size of defects and the intensity of uniform changes in appearance of coatings and outlines the general principles of the system. This system is intended to be used, in particular, for defects c
32、aused by ageing and weathering, and for uniform changes such as colour changes, for example yellowing.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cite
33、d applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 13076, Paints and varnishes Lighting and procedure for visual assessments of coatings3 Terms and definitionsFor the purposes of this document, the following terms and definitions a
34、pply.3.1filiform corrosiontype of corrosion proceeding under a coat of paint, varnish, or related product, in the form of threads, generally starting from bare edges or from local damage of the coatingNote 1 to entry: Usually the threads are irregular in length and direction of growth, but they may
35、also be nearly parallel and of approximately equal length.Note 2 to entry: Filiform corrosion can also occur under other protective coatings.Note 3 to entry: Usually the threads follow the direction of extrusion of a metal substrate, do not cross over one another, and need to be initiated by aggress
36、ive ions.SOURCE: ISO 4623-1:2000, 3.1, modified Note 3 to entry has been added; ISO 4623-2:2003, 3.1, modified The notes to entry have been numbered. ISO 2016 All rights reserved 1BS EN ISO 4628-10:2016ISO 4628-10:2016(E)4 Assessment4.1 GeneralCarry out the assessment under good illumination, as spe
37、cified in ISO 13076.4.2 Method 1This applies where there is regular corrosion see Figure 1 a).It includes the following: measuring the maximum distances Lland Lr, in millimetres, from the scribed line to the point to which the filiform corrosion has developed on the left-hand side and on the right-h
38、and side respectively see Figure 1a), in order to calculate the length of the longest filament L which is the mean value of Lland Lr; measuring the distances Mland Mr, in millimetres, to which the scribed line to which the majority of filaments have developed from the left-hand side and on the right
39、-hand side respectively see Figure 1a), in order to calculate the most frequent filament length M, which is the mean value of Mland Mr.4.3 Method 2This applies where there is irregular corrosion see Figure 1 b).It includes: measuring L, see method 1; measuring Ml1, Mr1, Ml2, Mr2, etc., in order to c
40、alculate the overall values Mland Mrusing the following equations:MxM xM xM xM xMzll1 l2 l3 l4 nln=+1234.MyM yM yM yM yMzrr1 r2 r3 r4 nrn=+1234.where Ml1, Mr1, x1, y1, etc., and z are as shown in Figure 1 b).5 Expression of resultsExpress the numerical ratings of the length of the longest filament L
41、 and the most frequent filament length M as follows: filiform corrosion, L5/M3.This means a length of the longest filament is 5 mm and a most frequent filament length is 3 mm.6 Test reportThe test report shall contain at least the following information:a) all details necessary to identify the coatin
42、g examined;2 ISO 2016 All rights reservedBS EN ISO 4628-10:2016ISO 4628-10:2016(E)b) a reference to this part of ISO 4628, i.e. ISO 4628-10;c) the type of surface examined, its size and, if appropriate, its location;d) the result of the assessment in accordance with Clause 5;e) an indication of the
43、illumination under which the assessment has been carried out;f) whether the coating was stripped or not;g) any unusual features (anomalies) observed during the assessment;h) the date of the examination. ISO 2016 All rights reserved 3BS EN ISO 4628-10:2016ISO 4628-10:2016(E)a) b)KeyL length of the lo
44、ngest filament 1, 2, number of zonesM most frequent filament length x zones on left-hand sider right y zones on right-hand sidel left z overall length of assessed areaFigure 1 Determination of length of longest filament L and the most frequent filament length M4 ISO 2016 All rights reservedBS EN ISO
45、 4628-10:2016ISO 4628-10:2016(E)Annex A (informative) Pictorial examples of different ratings for the length of the longest filament L and the most frequent filament length Ma) L12/M1 b) L1/M2c) L3/M1 d) L3/M2 ISO 2016 All rights reserved 5BS EN ISO 4628-10:2016ISO 4628-10:2016(E)e) L45/M1 f) L5/M2g
46、) L2/M3 h) L2/M4i) L3/M3 j) L4/M46 ISO 2016 All rights reservedBS EN ISO 4628-10:2016ISO 4628-10:2016(E)k) L5/M3 l) L5/M5Figure A.1 Pictorial examples ISO 2016 All rights reserved 7BS EN ISO 4628-10:2016ISO 4628-10:2016(E)Bibliography1 ISO 4623-1:2000, Paints and varnishes Determination of resistanc
47、e to filiform corrosion Part 1: Steel substrates2 ISO 4623-2:2003, Paints and varnishes Determination of resistance to filiform corrosion Part 2: Aluminium substrates8 ISO 2016 All rights reservedBS EN ISO 4628-10:2016This page deliberately left blankThis page deliberately left blankBSI is the natio
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