SIST EN 13438:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Beschichtungsstoffe - Pulverbeschichtungen für feuerverzinkte oder sherardisierte Stahlerzeugnisse für BauzweckePeintures et vernis - Revêtements de poudre organique pour produits en acier galvanisé à chaud ou shérardisé utilisés dans la constructionPaints and varnishes - Powder organic coatings for hot dip galvanised or sherardised steel products for construction purposes87.040Barve in lakiPaints and varnishes25.220.60Organske prevlekeOrganic coatingsICS:Ta slovenski standard je istoveten z:EN 13438:2013SIST EN 13438:2014en,fr,de01-april-2014SIST EN 13438:2014SLOVENSKI
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SIST EN 13438:2014



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13438
September 2013 ICS 25.220.60 Supersedes EN 13438:2005English Version
Paints and varnishes - Powder organic coatings for hot dip galvanised or sherardised steel products for construction purposes
Peintures et vernis - Revêtements de poudre organique pour produits en acier galvanisé à chaud ou shérardisé utilisés dans la construction
Beschichtungsstoffe - Pulverbeschichtungen für feuerverzinkte oder sherardisierte Stahlerzeugnisse für Bauzwecke This European Standard was approved by CEN on 19 July 2013.
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 obtained 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 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 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13438:2013: ESIST EN 13438:2014



EN 13438:2013 (E) 2 Contents Page Foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 7 4 Substrate material . 8 5 Coating powder . 8 5.1 Identification . 8 5.2 Storage . 8 5.3 Performance requirements . 9 5.3.1 General . 9 5.3.2 Colour . 9 5.3.3 Gloss . 9 5.3.4 Adhesion . 9 5.3.5 Resistance to scratching . 9 5.3.6 Resistance to deformation . 9 5.3.7 Resistance to mortar . 9 5.3.8 Resistance to weathering . 9 5.3.9 Resistance to humidity . 10 5.3.10 Resistance to sulfur dioxide . 10 5.3.11 Permeability . 10 5.3.12 Resistance to salt spray . 10 5.4 Health and safety information . 10 6 Application . 11 6.1 Cleaning and pretreatment of the hot dip galvanised or sherardised substrate . 11 6.2 Coating powder . 11 6.3 Application of coating powder . 11 6.4 Significant surfaces of coated article . 11 6.5 Performance requirements of the powder coated article . 11 6.5.1 General . 11 6.5.2 Surface appearance . 11 6.5.3 Colour . 11 6.5.4 Thickness . 11 6.5.5 Gloss . 12 6.5.6 Adhesion . 12 7 Certificate of conformity . 12 Annex A (normative)
Methods of test for coating powders . 15 A.1 General . 15 A.2 Sampling . 15 A.3 Coated test panels . 15 A.3.1 Material and dimensions . 15 A.3.2 Pretreatment . 15 A.3.3 Coating of the test panels . 15 A.3.4 Determination of thickness . 15 A.3.5 Appearance and conditioning . 16 A.4 Test procedures on coated test panels . 16 A.4.1 Surface . 16 SIST EN 13438:2014



EN 13438:2013 (E) 3 A.4.2 Colour . 16 A.4.3 Gloss . 16 A.4.4 Adhesion . 16 A.4.5 Resistance to scratching . 17 A.4.6 Resistance to deformation . 17 A.4.7 Resistance to mortar . 17 A.4.8 Resistance to weathering. 17 A.4.9 Resistance to humidity . 17 A.4.10 Resistance to sulfur dioxide . 18 A.4.11 Permeability . 18 A.4.12 Resistance to salt spray . 18 Annex B (informative)
Guidance on cleaning and pretreatment processes . 19 B.1 Cleaning . 19 B.2 Pretreatment . 19 B.3 Types of pretreatment . 19 B.3.1 Conversion and drying of the conversion coating (chemical pretreatment) . 19 B.3.2 Mechanical pretreatment. 20 Annex C (informative)
Guidelines on the powder coating process . 21 Annex D (normative)
Methods of test for powder coatings . 22 D.1 General . 22 D.2 Test piece preparation . 22 D.3 Test procedures on finished articles . 22 D.3.1 Surface appearance . 22 D.3.2 Colour . 22 D.3.3 Thickness . 22 D.3.4 Gloss . 22 D.3.5 Adhesion . 22 D.4 Test procedures on test panels . 23 Annex E (informative)
Guidelines on the care and protection of powder coated hot dip galvanised or sherardised steel components . 24 E.1 Packing and handling. 24 E.2 Tapes . 24 Bibliography . 25
SIST EN 13438:2014



EN 13438:2013 (E) 4 Foreword This document (EN 13438:2013) has been prepared by 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 March 2014, and conflicting national standards shall be withdrawn at the latest by March 2014. 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 supersedes EN 13438:2005. In relation to EN 13438:2005, the following main amendments have been made: a) the term defined as "test sample" has been removed; b) a new term "substrate" has been introduced; c) a paragraph in Clause 4 includes references to EN ISO 14713-2 and EN ISO 14713-3 to optimise design of articles sent for processing to this standard; d) tolerance limits on gloss requirements has been tightened slightly for gloss levels over 50 units (reduced from ± 10 units to ± 7 units) and "Table 1  Gloss requirements" removed; e) Clause 6 has been edited to clarify references to "cleaning" as distinct from "preparation" or "pretreatment"; f) reference to (old) Table 1 in 6.5.5 "Gloss" has been removed; g) an adhesion test on the finished powder coated article is now not mandatory (see revised 6.5.6) and if required should be specified; h) a new "Table 1  Summary of tests" has been included for ease of reference, after Clause 7; i) the minimum thickness of coated test panels used for tests for mechanical properties has been increased from 0,3 mm to 1,0 mm (see A.3.1); j) reference to updated standards have been included, e.g. replacement of ISO 7724-3 with
EN ISO 11664-4 (see A.4.2) and replacement of ISO 1518 with EN ISO 1518-1 (see A.4.5); k) Annex B has been edited to clarify references to "cleaning" and "pretreatment" and the content reduced; l) the possibility of an adhesion test on finished article now included in Annex D (see D.3.5); m) the content of Annex E has been reduced – reference has been made to EN 15773 for further information. 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 of 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. SIST EN 13438:2014



EN 13438:2013 (E) 5 Introduction This European Standard has been produced as a result of the growing demand for products made of powder coated hot dip galvanised or sherardised steel. These products offer a combination of corrosion resistance and decorative appearance. It is assumed in the drafting of this standard that the specified test methods will be applied by those who are suitably trained and supervised. This European Standard has been written from a coating performance perspective and does not seek to set out one method of powder coating hot dip galvanised or sherardised steel products. Nevertheless, in order to facilitate production of the best quality powder coated hot dip galvanised or sherardised articles, experience has shown how important it is that sufficient dialogue between the client, specifier, designer, fabricator, galvaniser or sherardiser and powder coating applicator takes place at the earliest stages of the project and that, where possible, timescales set out for processing of the work are practical and adhered to. It is strongly recommended that the guidance document for supply of duplex coatings, EN 15773, Industrial application of powder organic coatings to hot dip galvanized or sherardized steel articles [duplex systems]  Specifications, recommendations and guidelines, is used in combination with this standard when specifying for duplex systems. SIST EN 13438:2014



EN 13438:2013 (E) 6 1 Scope This European Standard specifies performance requirements for organic coating powders and powder organic coatings as applied to finished articles (hot dip galvanised or sherardised steel products) for construction purposes. Hot dip galvanised steel products can be articles that have been batch hot dip galvanised (hot dip galvanised after fabrication) or articles consisting of continuously hot dip galvanised sheet which is then subsequently fabricated.
This European Standard does not set out any performance requirements for the powder coating process itself. Guidance on cleaning and pretreatment of the hot dip galvanised or sherardised steel products prior to powder coating is provided. This European Standard does not apply to articles with zinc-aluminium coatings or aluminium-zinc coatings, or to continuously hot dip galvanised wire. This standard does not apply to organic coating powders and powder organic coatings as applied to hot dip galvanised or sherardised steel products (i.e. duplex coated articles) for which there are specific standards, which might include additional requirements or requirements which are different from those of this standard. 2 Normative references The 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 10346, Continuously hot-dip coated steel flat products — Technical delivery conditions EN 13811, Sherardizing — Zinc diffusion coatings on ferrous products — Specification EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles — Specifications and test methods (ISO 1461) EN ISO 1518-1, Paints and varnishes — Determination of scratch resistance — Part 1: Constant loading method (ISO 1518-1) EN ISO 1519, Paints and varnishes — Bend test (cylindrical mandrel) (ISO 1519) EN ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic method (ISO 2178) EN ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409) EN ISO 2808, Paints and varnishes — Determination of film thickness (ISO 2808) EN ISO 2810, Paints and varnishes — Natural weathering of coatings — Exposure and assessment (ISO 2810) EN ISO 2813, Paints and varnishes — Determination of specular gloss of non-metallic paint films at 20°, 60° and 85° (ISO 2813) EN ISO 3231, Paints and varnishes — Determination of resistance to humid atmospheres containing sulfur dioxide (ISO 3231) EN ISO 3668, Paints and varnishes — Visual comparison of the colour of paints (ISO 3668) EN ISO 4618:2006, Paints and varnishes — Terms and definitions (ISO 4618:2006) SIST EN 13438:2014



EN 13438:2013 (E) 7 EN ISO 6270-1, Paints and varnishes — Determination of resistance to humidity — Part 1: Continuous condensation (ISO 6270-1) EN ISO 8130-9, Coating powders — Part 9: Sampling (ISO 8130-9) EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227) EN ISO 11341:2004, Paints and varnishes — Artificial weathering and exposure to artificial radiation — Exposure to filtered xenon-arc radiation (ISO 11341:2004) EN ISO 11664-4, Colorimetry — Part 4: CIE 1976 L*a*b Colour space (ISO 11664-4) ISO 10474, Steel and steel products — Inspection documents 3 Terms and definitions For the purposes of this document, the terms and definitions contained in EN ISO 4618:2006 and the following apply. 3.1 finishing coat final coat of a coating system
[SOURCE: EN ISO 4618:2006, 2.108] 3.2 conversion coating layer produced on a hot dip galvanised or sherardised steel surface by a chemical treatment 3.3 powder coating dry film obtained by application and fusing of a coating powder 3.4 coating powder solvent-free coating material in powder form which, after fusing and possible curing, gives a continuous film 3.5 test piece single item, representative of the work being processed 3.6 significant surface part of the coated article on which the coating is essential for serviceability of the article 3.7 specifier person specifying the performance requirements for the coating and significant surfaces of the article 3.8 coating applicator company responsible for applying the coating powder onto a substrate 3.9 substrate surface to which a coating material is applied or is to be applied
SIST EN 13438:2014



EN 13438:2013 (E) 8 [SOURCE: EN ISO 4618:2006, 2.219] 4 Substrate material The substrate shall be hot dip galvanised steel in accordance with EN ISO 1461, EN 10346, or sherardised steel in accordance with EN 13811. If required, steel sections shall be free from surface imperfections such as die lines and laminations. Unless otherwise agreed, the preparation of the surface of the hot dip galvanised article, such that the surface is suitable for pretreatment and application of powder to the surface, shall be the responsibility of the coating applicator (see 3.8). The galvaniser or the sherardiser and coating applicator should be consulted about the design of the steel products intended for galvanising or sherardising after construction, prior to the fabrication stage, in order to optimise galvanising and powder coating quality.
NOTE EN 15773 and EN ISO 12944-4 provide some guidance on surface conditions that might be encountered on post fabrication hot dip galvanised or sherardised articles. To achieve optimum quality of finished product, sharp edges on the fabrication should be avoided (see EN ISO 14713-2 and EN ISO 14713-3). 5 Coating powder 5.1 Identification The following information shall be made available by the supplier for each consignment of coating powder: a) manufacturer; b) trade name; c) colour; d) gloss level; e) type of resin; f) batch number; g) box number; h) product reference code; i) date of manufacture; j) date of despatch. 5.2 Storage The coating powder, after storage in unopened containers for a maximum period indicated by the manufacturer, calculated from the date of dispatch by the manufacturer, shall still conform to 5.3. If no maximum permissible storage period is indicated by the manufacturer, the coating powder shall, after storage in unopened containers for up to 12 months from the date of despatch by the manufacturer, conform to 5.3. The storage temperature shall not exceed 25 °C unless otherwise specified by the coating powder manufacturer. SIST EN 13438:2014



EN 13438:2013 (E) 9 Coating powder that has been stored for longer than the maximum permissible period indicated by the manufacturer (or if no maximum permissible storage period has been indicated and the coating powder has been stored for longer than 12 months) shall only be used upon agreement between the manufacturer and the coating applicator. 5.3 Performance requirements 5.3.1 General The following requirements (5.3.2. to 5.3.12) shall be met. Tests shall be carried out in accordance with Annex A by the manufacturer of the coating powder. The manufacturer of the coating powder shall identify, with reference to Class 1 or Class 2, the performance capability of powder supplied, dependent upon the results of testing set out in 5.3.12. 5.3.2 Colour When a coated test panel is examined in accordance with A.4.2, the colour of the coating shall be within the tolerance limits indicated by the manufacturer. 5.3.3 Gloss When a coated test panel is examined in accordance with A.4.3, the gloss level of the coating shall be within the tolerance limits indicated by the manufacturer. If no tolerance limits have been indicated by the manufacturer, the tolerance limits on the gloss level of the coating shall be ± 7 units. 5.3.4 Adhesion When a coated test panel is tested in accordance with A.4.4, the result shall be in accordance with the classification 0 of EN ISO 2409. 5.3.5 Resistance to scratching When a coated test panel is tested in accordance with A.4.5, there shall be no penetration through the coating to the substrate. 5.3.6 Resistance to deformation When a coated test panel is tested in accordance with A.4.6, there shall be no cracking or delamination of the coating from the substrate. 5.3.7 Resistance to mortar When a coated test panel is tested in accordance with A.4.7, the mortar shall be readily dislodged without the use of an implement. There shall be no detachment of the coating and no change in its appearance. 5.3.8 Resistance to weathering A coated test panel shall conform to one of the following weathering tests, dependent on the product and following the agreement between the coating applicator and the specifier. a) Resistance to artificial weathering: After testing in accordance with A.4.8.1, there shall be no signs of cracking or blistering. The residual gloss level shall be more than 40 % of the original gloss level. Colour changes shall be within the limits agreed by the coating applicator and the specifier (e.g. as ∆E and/or ∆C and/or ∆L). SIST EN 13438:2014



EN 13438:2013 (E) 10 b) Resistance to natural weathering: After testing in accordance with A.4.8.2, there shall be no signs of cracking, blistering or unacceptable colour change. NOTE Natural weathering tests are generally considered to be more informative than artificial weathering procedures in assessing coating durability, but necessarily take longer. 5.3.9 Resistance to humidity When a coated test panel is tested in accordance with A.4.9.1 there shall be no blistering, softening or detachment of the coating, nor signs of corrosion of the substrate. When the coating is tested by the method described in A.4.9.2 the result shall be in accordance with the classification 0 of EN ISO 2409. 5.3.10 Resistance to sulfur dioxide When a coated test panel is tested in accordance with A.4.10, there shall be no colour change in comparison with an unexposed coated test panel, no blistering of the coating and no signs of corrosion of the substrate. 5.3.11 Permeability When a coated test panel is tested in accordance with A.4.11, there shall be no blistering or detachment of the coating. Any blistering within 3 mm of any panel edge shall be ignored. 5.3.12 Resistance to salt spray 5.3.12.1 General Coating powders shall be subject to the following tests. Coated test panels shall be subjected to one of the two tests, as referred to in 5.3.12.2 or 5.3.12.3, and powders which pass shall be designated by the appropriate "class" by the powder supplier. 5.3.12.2 Neutral salt spray When tested in accordance with A.4.12.1, there shall be no underfilm corrosion or loss of adhesion extending in a perpendicular direction beyond 5 mm from the scribed lines and there shall be no signs of blistering or cracking on any other part of the panel. Powders which pass this test shall be designated "Class 1" by the powder supplier. 5.3.12.3 Acetic acid salt spray When tested in accordance with A.4.12.2, there shall be no underfilm corrosion or loss of adhesion extending in a perpendicular direction beyond 5 mm from the scribed lines and there shall be no signs of blistering or cracking on any other part of the panel. Powders which pass this test shall be designated "Class 2" by the powder supplier. 5.4 Health and safety informat
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