1、Coil coated metals - Test methodsPart 8: Resistance to salt spray (fog)BS EN 135238:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-8 July 2017 ICS 25.220.60 Supersedes EN 13523-8:2010English Version Coil
2、 coated metals - Test methods - Part 8: Resistance to salt spray (fog) Tles prlaques - Mthodes dessais - Partie 8 : Rsistance au brouillard salin Bandbeschichtete Metalle - Prfverfahren - Teil 8: Bestndigkeit gegen Salzsprhnebel This European Standard was approved by CEN on 21 May 2017. CEN members
3、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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application t
4、o the CEN-CENELEC 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 of a CEN member into its own language and notified to the CEN-CENELEC Management
5、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 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
6、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marn
7、ix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-8:2017 ENational forewordThis British Standard is the UK implementation of EN 135238:2017. It supersedes BS EN 135238:2010, which is withdrawn.The UK
8、 participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessar
9、y 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 94049 1ICS 25.220.60Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was p
10、ublished under the authority of the Standards Policy and Strategy Committee on 31 August 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 135238:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-8 July 2017 ICS 25.220.60 Supersedes EN 13523-8:20
11、10English Version Coil coated metals - Test methods - Part 8: Resistance to salt spray (fog) Tles prlaques - Mthodes dessais - Partie 8 : Rsistance au brouillard salin Bandbeschichtete Metalle - Prfverfahren - Teil 8: Bestndigkeit gegen Salzsprhnebel This European Standard was approved by CEN on 21
12、May 2017. 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. Up-to-date lists and bibliographical references concerning such national standards may be obt
13、ained on application to the CEN-CENELEC 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 of a CEN member into its own language and notified to the C
14、EN-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 Macedonia, France, Germany, Greece, Hungary, Iceland, Irelan
15、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manageme
16、nt 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 Members. Ref. No. EN 13523-8:2017 EBS EN 135238:2017EN 13523-8:2017 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Normative references 5 3 Terms a
17、nd definitions . 5 4 Principle . 6 5 Apparatus . 7 6 Sampling . 7 7 Test panels . 7 7.1 General 7 7.2 Option 1 8 7.3 Option 2 8 8 Procedure. 9 8.1 Test conditions . 9 8.2 Exposure of test panels . 9 8.3 Evaluation . 10 8.3.1 General . 10 8.3.2 Blistering . 10 8.3.3 Corrosion and/or delamination . 10
18、 9 Expression of results . 10 10 Precision 11 11 Test report 11 Bibliography . 12 BS EN 135238:2017EN 13523-8:2017 (E) 3 European foreword This document (EN 13523-8:2017) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This Europea
19、n Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2018, and conflicting national standards shall be withdrawn at the latest by January 2018. Attention is drawn to the possibility that some of the elemen
20、ts of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13523-8:2010. The main changes compared to the previous edition are: a) definitions for the following terms were implemented from EN I
21、SO 4628-8: holiday, artificial defect, circular defect, scribe, corroded area, delaminated area; b) definitions for edge and general surface were added; c) the term creep corrosion was changed to corrosion; d) use of a hole punch for application of the hole was added; e) EN ISO 4628-8 was introduced
22、 for the inspection of delamination and corrosion around the scribe; f) the text has been editorially revised and the normative references have been updated. The EN 13523 series, Coil coated metals Test methods, consists of the following parts: Part 0: General introduction Part 1: Film thickness Par
23、t 2: Gloss Part 3: Colour difference Instrumental comparison Part 4: Pencil hardness Part 5: Resistance to rapid deformation (impact test) Part 6: Adhesion after indentation (cupping test) Part 7: Resistance to cracking on bending (T-bend test) Part 8: Resistance to salt spray (fog) Part 9: Resistan
24、ce to water immersion Part 10: Resistance to fluorescent UV radiation and water condensation BS EN 135238:2017EN 13523-8:2017 (E) 4 Part 11: Resistance to solvents (rubbing test) Part 12: Resistance to scratching Part 13: Resistance to accelerated ageing by the use of heat Part 14: Chalking (Helmen
25、method) Part 15: Metamerism Part 16: Resistance to abrasion Part 17: Adhesion of strippable films Part 18: Resistance to staining Part 19: Panel design and method of atmospheric exposure testing Part 20: Foam adhesion Part 21: Evaluation of outdoor exposed panels Part 22: Colour difference Visual co
26、mparison Part 23: Resistance to humid atmospheres containing sulfur dioxide Part 24: Resistance to blocking and pressure marking Part 25: Resistance to humidity Part 26: Resistance to condensation of water Part 27: Resistance to humid poultice (Cataplasm test) Part 29: Resistance to environmental so
27、iling (Dirt pick-up and striping) According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav
28、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 and the United Kingdom. BS EN 135238:2017EN 13523-8:2017 (E) 5 1 Scop
29、e This part of the EN 13523 series specifies the procedures for determining the resistance to salt spray (fog) of an organic coating on a metallic substrate (coil coating). For steel, neutral salt spray (fog) is usually used, and for aluminium, acetic acid salt spray (fog). 2 Normative references Th
30、e 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 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13523-
31、0, Coil coated metals - Test methods - Part 0: General introduction EN 13523-7:2014, Coil coated metals - Test methods - Part 7: Resistance to cracking on bending (T-bend test) EN 13523-19:2011, Coil coated metals - Test methods - Part 19: Panel design and method of atmospheric exposure testing EN 6
32、0454-2, Pressure-sensitive adhesive tapes for electrical purposes Part 2: Methods of test (IEC 60454-2) EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696) EN ISO 4628-2, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity a
33、nd size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering (ISO 4628-2) EN ISO 4628-8:2012, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appea
34、rance - Part 8: Assessment of degree of delamination and corrosion around a scribe or other artificial defect (ISO 4628-8:2012) EN ISO 9227:2017, Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2017) EN ISO 17872, Paints and varnishes - Guidelines for the introduction of scrib
35、e marks through coatings on metallic panels for corrosion testing (ISO 17872) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13523-0 and the following apply. 3.1 holiday absence of a paint film from certain areas of a coated substrate SOURCE: EN ISO
36、4628-8:2012, 3.1 BS EN 135238:2017EN 13523-8:2017 (E) 6 3.2 artificial defect holiday through a coating, deliberately introduced in order to expose the underlying metal substrate prior to exposure to a corrosive environment SOURCE: EN ISO 4628-8:2012, 3.2 3.2.1 circular defect circular holiday throu
37、gh a coating, deliberately introduced in order to expose the underlying metal substrate prior to exposure in a corrosive environment Source: EN ISO 4628-8:2012, 3.3 3.2.2 scribe linear holiday through a coating, deliberately introduced in order to expose the underlying metal substrate prior to expos
38、ure in a corrosive environment SOURCE: EN ISO 4628-8:2012, 3.6 3.2.3 edge unprotected cut edge, in order to expose the underlying metal substrate prior to exposure in a corrosive environment 3.3 corroded area area around a defect where the substrate has been attacked by corrosion SOURCE: EN ISO 4628
39、-8:2012, 3.4 3.4 delaminated area area around a defect where loss of adhesion of a coating from a substrate or an underlying coating has occurred SOURCE: EN ISO 4628-8:2012, 3.5 3.5 general surface any area 10 mm or more away from any artificial defect and bend Note 1 to entry: See EN 10169:2010+A1:
40、2012, 7.5.8.3.2. 4 Principle A test specimen is exposed to a salt spray (fog) for a specified period of time and assessed for possible corrosion expressed by a degree of delamination or corrosion and a degree of blistering. BS EN 135238:2017EN 13523-8:2017 (E) 7 5 Apparatus Ordinary laboratory appar
41、atus and glassware, together with the following: 5.1 Salt spray cabinet, in accordance with EN ISO 9227. 5.2 Test solution, as specified in 5.2.1 or 5.2.2 respectively. 5.2.1 For neutral salt spray fog, the test solution shall be prepared by dissolving sodium chloride in water of at least grade 3 pu
42、rity, as defined in EN ISO 3696, to produce a concentration of (50 5) g/l. The sodium chloride shall be white, of minimum assay 99,6 % (by mass), and substantially free from copper and nickel; it shall contain no more than 0,1 % (by mass) of sodium iodide. If the pH of the solution is outside the ra
43、nge 6,0 to 7,0, the presence of undesirable impurities in the salt or the water or both shall be investigated. The pH of the test solution shall be adjusted so that the pH of sprayed solution collected within the salt spray cabinet (5.1) is between 6,5 and 7,2. Any necessary adjustment to the pH sha
44、ll be made by additions of solutions of either hydrochloric acid or sodium bicarbonate of analytical grade (see also EN ISO 9227, NSS test). 5.2.2 For acetic acid salt spray (fog), add a sufficient amount of glacial acetic acid to the sodium chloride solution (5.2.1) to ensure that the pH of sprayed
45、 solution collected within the salt spray cabinet (5.1) is between 3,1 and 3,3. If the pH of the solution initially prepared is 3,0 to 3,1, the pH of the sprayed solution is likely to be within the specified limits (see also EN ISO 9227, AASS test). Under normal conditions, the level of glacial acet
46、ic acid required is approximately 0,3 % (by mass). 5.3 Cutting tool, with a hard metal tip having a radius or width capable of exposing at least 0,2 mm of metal substrate according to EN ISO 17872. 5.4 Transparent pressure-sensitive adhesive tape, 25 mm wide, with an adhesion strength of (10 1) N pe
47、r 25 mm width when tested in accordance with EN 60454-2. 5.5 Sharp drill bit or hole punch, of diameter approximately 5 mm for creating the hole. 5.6 Appropriate pressing (bending) apparatus, in accordance with EN 13523-19:2011, 5.2, or EN 13523-7:2014, 5.1.2. 6 Sampling In accordance with EN 13523-
48、0. 7 Test panels 7.1 General In accordance with EN 13523-0. Design of the panels: There are two options (7.2 and 7.3), both having the following in common: the protection of edges is optional. At least one edge should be unprotected to check the corrosion protection of metal exposed areas; if not ot
49、herwise specified, the edges of the exposed panels shall be sheared with the burrs away from the test surface; BS EN 135238:2017EN 13523-8:2017 (E) 8 the reverse side shall be protected to stop any corrosive influence from the reverse side to the front side. The protection to the reverse side shall be applied before the drilling of the hole; the scribes shall be prepared by means of the cutting tool (5.3) and extend down just through the coating to the subst
