1、BRITISH STANDARD BS EN ISO 4628-1:2003 BS 3900-H1:2003 Incorporating Corrigendum No. 1 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 designation system The Eur
2、opean Standard EN ISO 4628-1:2003 has the status of a British Standard ICS 87.040 BS EN ISO 4628-1:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 September 2003 BSI 25 November 2003 ISBN 0 580 42658 0 National foreword This British S
3、tandard is the official English language version of EN ISO 4628-1:2003. It is identical with ISO 4628-1:2003. It supersedes BS 3900-H1:1983 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints, which has the responsibility t
4、o: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International
5、 Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British St
6、andard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Euro
7、pean developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 3 and a back cover. The BSI copyright notice displayed in this document indi
8、cates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14875 Corrigendum No. 1 25 November 2003 Correction to EN ISO foreword page EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO46281 September2003 ICS87.040 Englishversion PaintsandvarnishesEvaluatio
9、nofdegradationofcoatings Designationofquantityandsizeofdefects,andofintensityof uniformchangesinappearancePart1:Generalintroduction anddesignationsystem(ISO46281:2003) PeinturesetvernisEvaluationdeladgradationdes revtementsDsignationdelaquantitetdeladimension desdfauts,etdelintensitdeschangementsuni
10、formes daspectPartie1:Introductiongnraleetsystmede dsignation(ISO46281:2003) BeschichtungsstoffeBeurteilungvon BeschichtungsschdenBeurteilungderMengeundder GrevonSchdenundderIntensittvongleichmigen VernderungenimAussehenTeil1:Allgemeine EinfhrungundBewertungssystem(ISO46281:2003) ThisEuropeanStandar
11、dwasapprovedbyCENon1August2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicati
12、ontotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethe
13、nationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOM
14、ITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO46281:2003EINESO6482:12(300E) 2 CORRECTED20031029 Foreword Thisdocument(ENISO46281:2003)hasbeenpreparedbyTechnicalCommitteeISO/TC35 “
15、Paintsandvarnishes“incollaborationwithTechnicalCommitteeCEN/TC139“Paintsand varnishes“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyMarch2004,andconflictingnational standardsshallbewit
16、hdrawnatthelatestbyMarch2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands
17、,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO46281:2003hasbeenapprovedbyCENasENISO46281:2003withoutany modifications. ENISO46281:20032 Reference number ISO 4628-1:2003(E)INTERNATIONAL STANDARD ISO 4628-1 Third edition 2003-09-01 Paints and var
18、nishes 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 designation system Peintures et vernis valuation de la dgradation des revtements Dsignation de la quantit et de la dimension de
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24、 bwww.is.o groii ENISO46281:2003 iiiContents Page Foreword iv 1 Scope 1 2 General principles of the designation system . 1 3 Assessment of defects and of intensity of changes . 1 3.1 General. 1 3.2 Designation of quantity of defects 2 3.3 Designation of size of defects . 2 3.4 Designation of intensi
25、ty of changes . 2 4 Expression of results 3 5 Test report . 3 ENISO46281:2003iv Foreword ISO (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
26、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 take part in the work. ISO collaborates
27、 closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards 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.
28、 Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International 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
29、document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4628-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes. This third edition cancels
30、and replaces the second edition (ISO 4628-1:1982), of which it constitutes a mainly editorial revision. ISO 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 unifor
31、m changes in appearance: Part 1: General introduction and designation system Part 2: Assessment 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 Par
32、t 7: Assessment of degree of chalking by velvet method Part 8: Assessment of degree of delamination and corrosion around a scribe Part 10: Assessment of degree of filiform corrosion ENISO46281:2003INTENRATIONAL TSANDADR IS-8264 O1:(3002E)1Paints and varnishes Evaluation of degradation of coatings De
33、signation of quantity and size of defects, and of intensity of uniform changes in appearance Part 1: General introduction and designation system 1 Scope This part of ISO 4628 defines a system for designating the quantity and size of defects and the intensity of changes in appearance of coatings and
34、outlines the general principles of the system used throughout ISO 4628. This system is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such as colour changes, for example yellowing. The other parts of ISO 4628 provide pictorial standards or ot
35、her means of evaluating particular types of defect. As far as possible, already existing evaluation schemes have been used as the basis. This part of ISO 4628 can also be used for assessing defects not covered by the other parts of ISO 4628. 2 General principles of the designation system A uniform c
36、onvention has been adopted for designating the quantity and size of defects and the intensity of changes by means of ratings on a numerical scale ranging from 0 to 5, 0 denoting no defects or changes, and 5 denoting defects or changes so severe that further discrimination is not reasonable. The othe
37、r ratings, corresponding to the numbers 1, 2, 3 and 4, are so defined that they give optimum discrimination over the whole range of the scale. The use of intermediate half-steps is permissible, if specified, to give a more detailed report on the defects or changes observed. NOTE 1 The quantity of sm
38、all defects scattered over the test area may be assessed by means of a grid method. Details of such a method are described in ISO 4540, Metallic coatings Coatings cathodic to the substrate Rating of electroplated test specimens subjected to corrosion tests. NOTE 2 The ISO ranking may be different fr
39、om the ranking schemes used in other standards, e.g. the rusting evaluation ASTM D 610, Standard Test Method for Evaluating Degree of Rusting on Painted Steel Surfaces, where ranking is from 10 to 1, with 10 meaning no change and 1 meaning greatest change. In addition to the ratings, the approximate
40、 dimensions of the area concerned shall be given, or the proportion of the area concerned compared with the total area, expressed as a percentage. 3 Assessment of defects and of intensity of changes 3.1 General Carry out the assessment under good illumination. ENISO46281:20032 3.2 Designation of qua
41、ntity of defects The quantity of defects in the form of discontinuities or other local imperfections in the coating, scattered over the test area in a more or less even pattern, is designated in accordance with Table 1. The ratings shall be expressed as a whole number unless otherwise specified (see
42、 Clause 2). Table 1 Rating scheme for designating the quantity of defects Rating Quantity of defect 0 1 2 3 4 5 none, i.e. no detectable defects very few, i.e. small, barely significant number of defects few, i.e. small but significant number of defects moderate number of defects considerable number
43、 of defects dense pattern of defects 3.3 Designation of size of defects The average size (order of magnitude) of defects is designated, if required and meaningful, in accordance with Table 2. Table 2 Rating scheme for designating the size of defects Rating Size of defect a0 1 2 3 4 5 not visible und
44、er 10 magnification only visible under magnification up to 10 just visible with normal corrected vision clearly visible with normal corrected vision (up to 0,5 mm) 0,5 mm to 5 mm larger than 5 mm aUnless otherwise specified in subsequent parts of this International Standard. Where a test area exhibi
45、ts defects of various sizes, the size of the largest defects which are numerous enough to be typical of the test area shall be quoted as the size rating. The size of the defect shall be reported using the designation Sn where S indicates the size and n is the rating number. For example, a defect whi
46、ch is just visible with normal corrected vision is designated S2. 3.4 Designation of intensity of changes The intensity of uniform changes in the appearance of the coating, such as colour changes, for example yellowing, is designated in accordance with Table 3. The ratings shall be expressed as a wh
47、ole number unless otherwise specified (see Clause 2). ENISO46281:2003 3Table 3 Rating scheme for designating the intensity of changes Rating Intensity of change 0 1 2 3 4 5 unchanged, i.e. no perceptible change very slight, i.e. just perceptible change slight, i.e. clearly perceptible change moderate, i.e. very clearly perceptible change considerable, i.e. pronounced change very marked change 4 Expression of results The type of defect, the quantity present (Table 1) and its size (Table 2) shall be expressed as indicated in the following examples: blistering; d
