SVENSK STANDARD SS-EN ISO 19598:2016

Transkript

1 SVENSK STANDARD SS-EN ISO 19598:2016 Fastställd/Approved: Publicerad/Published: Utgåva/Edition: 1 Språk/Language: engelska/english ICS: ; ; Oorganiska ytbeläggningar Elektrolytiska beläggningar av zink och zinklegeringar på järn och stål med kompletterande behandlingar fria från Cr(VI) (ISO 19598:2016) Metallic coatings Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment (ISO 19598:2016)

2 Standarder får världen att fungera SIS (Swedish Standards Institute) är en fristående ideell förening med medlemmar från både privat och offentlig sektor. Vi är en del av det europeiska och globala nätverk som utarbetar internationella standarder. Standarder är dokumenterad kunskap utvecklad av framstående aktörer inom industri, näringsliv och samhälle och befrämjar handel över gränser, bidrar till att processer och produkter blir säkrare samt effektiviserar din verksamhet. Delta och påverka Som medlem i SIS har du möjlighet att påverka framtida standarder inom ditt område på nationell, europeisk och global nivå. Du får samtidigt tillgång till tidig information om utvecklingen inom din bransch. Ta del av det färdiga arbetet Vi erbjuder våra kunder allt som rör standarder och deras tillämpning. Hos oss kan du köpa alla publikationer du behöver allt från enskilda standarder, tekniska rapporter och standardpaket till handböcker och onlinetjänster. Genom vår webbtjänst e-nav får du tillgång till ett lättnavigerat bibliotek där alla standarder som är aktuella för ditt företag finns tillgängliga. Standarder och handböcker är källor till kunskap. Vi säljer dem. Utveckla din kompetens och lyckas bättre i ditt arbete Hos SIS kan du gå öppna eller företagsinterna utbildningar kring innehåll och tillämpning av standarder. Genom vår närhet till den internationella utvecklingen och ISO får du rätt kunskap i rätt tid, direkt från källan. Med vår kunskap om standarders möjligheter hjälper vi våra kunder att skapa verklig nytta och lönsamhet i sina verksamheter. Vill du veta mer om SIS eller hur standarder kan effektivisera din verksamhet är du välkommen in på eller ta kontakt med oss på tel Standards make the world go round SIS (Swedish Standards Institute) is an independent non-profit organisation with members from both the private and public sectors. We are part of the European and global network that draws up international standards. Standards consist of documented knowledge developed by prominent actors within the industry, business world and society. They promote cross-border trade, they help to make processes and products safer and they streamline your organisation. Take part and have influence As a member of SIS you will have the possibility to participate in standardization activities on national, European and global level. The membership in SIS will give you the opportunity to influence future standards and gain access to early stage information about developments within your field. Get to know the finished work We offer our customers everything in connection with standards and their application. You can purchase all the publications you need from us - everything from individual standards, technical reports and standard packages through to manuals and online services. Our web service e-nav gives you access to an easy-to-navigate library where all standards that are relevant to your company are available. Standards and manuals are sources of knowledge. We sell them. Increase understanding and improve perception With SIS you can undergo either shared or in-house training in the content and application of standards. Thanks to our proximity to international development and ISO you receive the right knowledge at the right time, direct from the source. With our knowledge about the potential of standards, we assist our customers in creating tangible benefit and profitability in their organisations. If you want to know more about SIS, or how standards can streamline your organisation, please visit or contact us on phone +46 (0)

3 Europastandarden EN ISO 19598:2016 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN ISO 19598:2016. Denna standard ersätter SS :2014, utgåva 2. The European Standard EN ISO 19598:2016 has the status of a Swedish Standard. This document contains the official English version of EN ISO 19598:2016. This standard supersedes the Swedish Standard SS :2014, edition 2. Copyright / Upphovsrätten till denna produkt tillhör SIS, Swedish Standards Institute, Stockholm, Sverige. Användningen av denna produkt regleras av slutanvändarlicensen som återfinns i denna produkt, se standardens sista sidor. Copyright SIS, Swedish Standards Institute, Stockholm, Sweden. All rights reserved. The use of this product is governed by the end-user licence for this product. You will find the licence in the end of this document. Upplysningar om sakinnehållet i standarden lämnas av SIS, Swedish Standards Institute, telefon Standarder kan beställas hos SIS Förlag AB som även lämnar allmänna upplysningar om svensk och utländsk standard. Information about the content of the standard is available from the Swedish Standards Institute (SIS), telephone Standards may be ordered from SIS Förlag AB, who can also provide general information about Swedish and foreign standards. Denna standard är framtagen av kommittén för Oorganiska ytbeläggningar, SIS / TK 116. Har du synpunkter på innehållet i den här standarden, vill du delta i ett kommande revideringsarbete eller vara med och ta fram andra standarder inom området? Gå in på - där hittar du mer information.

4

5 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM Provläsningsexemplar / Preview EN ISO November 2016 ICS English Version Metallic coatings - Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment (ISO 19598:2016) Revêtements métalliques - Revêtements électrolytiques de zinc et d'alliages de zinc sur du fer ou de l'acier avec traitement supplémentaire sans Cr(VI) (ISO 19598:2016) Metallische Überzüge - Galvanische Zink- und Zinklegierungsüberzüge auf Eisenwerkstoffen mit zusätzlichen Cr(VI)-freien Behandlungen (ISO 19598:2016) This European Standard was approved by CEN on 1 October 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. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19598:2016 E

6 SS-EN ISO 19598:2016 (E) Provläsningsexemplar / Preview Contents Page European foreword... iv Introduction...v 1 Scope Normative references Terms and definitions Designation Electrodeposited coatings Passivation Post treatment Significant (functional) surfaces Examples of designations Information to be supplied by the purchaser to the electroplater Basis materials Coating and processing Surface preparation and deposition of zinc or zinc-alloy coating Supplementary treatments Passivation layers Post treatment Barrel-/rack-plating (handling of parts) Barrel electroplating Rack electroplating Hydrogen embrittlement Basic factors Choice of procedure Requirements to be met by coatings and test methods Thickness Adhesion Absence of Cr(VI) Accelerated corrosion testing General Minimum corrosion resistance of passivated zinc and zinc-alloy coatings Test report General information Coatings on materials having a tensile strength N/mm Test results...10 Bibliography...11 iii

7 SS-EN ISO 19598:2016 (E) European foreword This document (EN ISO 19598:2016) has been prepared by Technical Committee ISO/TC 107 Metallic and other inorganic coatings in collaboration with Technical Committee CEN/TC 262 Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys the secretariat of which is held by BSI. 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 May 2017, and conflicting national standards shall be withdrawn at the latest by May 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. 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. Endorsement notice The text of ISO 19598:2016 has been approved by CEN as EN ISO 19598:2016 without any modification.

8 SS-EN ISO 19598:2016 (E) Provläsningsexemplar / Preview Introduction The chromium(vi) free systems differ in 2 points from the chromium(vi)-containing systems: a) there is no self-healing of the system; b) higher temperature resistance (> 150 C), the limit for chromium(vi) containing systems, is 70 C. v

9 SS-EN ISO 19598:2016 (E) Metallic coatings Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment 1 Scope This International Standard applies to electrodeposited zinc and zinc-alloy coatings on iron and steel with Cr(VI)-free passivation. The zinc-alloy coatings contain nickel or iron as alloying elements (referred to as zinc/nickel and zinc/iron coatings, respectively). The main purpose of the coatings or coating systems is protecting iron and steel components against corrosion. This International Standard specifies the designations to be used for the above coating systems, the minimum corrosion resistance to be achieved in specified test procedures, and the minimum coating thicknesses required. 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. ISO 2080, Metallic and other inorganic coatings Surface treatment, metallic and other inorganic coatings Vocabulary ISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methods ISO 3613:2010, Metallic and other inorganic coatings Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys Test methods ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests ISO 9587, Metallic and other inorganic coatings Pretreatment of iron or steel to reduce the risk of hydrogen embrittlement ISO 9588, Metallic and other inorganic coatings Post-coating treatments of iron or steel to reduce the risk of hydrogen embrittlement ISO 27830:2008, Metallic and other inorganic coatings Guidelines for specifying metallic and inorganic coatings 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2080 apply. 1

10 SS-EN ISO 19598:2016 (E) Provläsningsexemplar / Preview 4 Designation 4.1 Electrodeposited coatings The electrodeposited coatings shall be composed of zinc or zinc-alloys as listed in Table 1. Table 1 Designation of electrodeposited coatings Symbol Zn ZnFe ZnNi Definition Zinc coating without alloying element Zinc-alloy containing a mass fraction of 0,3 % to 1,0 % iron Zinc-alloy containing a mass fraction of 12 % to 16 % nickel 4.2 Passivation Passivation is the production of conversion coatings by treating coatings with suitable Cr(VI)-free solutions in order to improve their corrosion resistance. The conversion coating may optionally be dyed. Since the Cr(VI)-free passivations are new coating systems, the new nomenclature is listed in Table 2. Table 2 Passivations a Type of passivation Code Colouration, surface appearance a Transparent An Colourless to coloured and iridescent Iridescent Cn Coloured and iridescent Black Fn Black Tints are permissible. Notes Often referred to as thin-layer passivation Often referred to as thick-layer passivation 4.3 Post treatment Application of a sealant or top coats increases corrosion resistance. Sealant layers normally show a thickness of up to 2 µm and are composed of Cr(VI)-free organic and/or inorganic compounds. Coatings that can be removed with cold cleaning agents, such as those with an oil, grease or wax base, are not considered as sealants in the context of this International Standard. Top coats are normally thicker than 2 µm and are Cr(VI)-free organic thin coatings which may need elevated temperature curing. Particularly for coatings with black passivation, a postdip can be used for increasing corrosion resistance and improving colour depth. The impact of the post treatments mentioned to component properties such as contact resistance, weldability, compatibility with fuels, performance in bonded joints, etc., when in service shall be assessed on a case by case basis. Since the range of surface modifications is very large, the use of a post treatment mentioned and the type shall be agreed on in the case of surface coatings that are subject to particular requirements. NOTE The post treatment mentioned normally remove the interference colours produced by passivation. 2

11 SS-EN ISO 19598:2016 (E) Table 3 Post treatment Symbol Tx T0 T2nL T2yL T4 T7nL T7yL NOTE T4 is not considered. a Left to the choice of the coater. b Optional designation of nl or yl, when required. Meaning Sealant may or may not be present a No sealant Sealant without integrated lubricant b Sealant with integrated lubricant b Subsequently added lubricant Top coat without integral lubricant b Top coat with integral lubricant b 4.4 Significant (functional) surfaces Components with complex shapes, particularly those having cavities, may not be capable of meeting the corrosion resistance and minimum thickness criteria required in the accelerated corrosion tests at all the points on the electroplated surface. In such cases, the significant surfaces for the coating system shall be indicated on the drawing by a dot-and-dash line. If the purchaser does not specify a significant surface, the definition given in ISO 27830:2008, Clause 6 shall apply. 4.5 Examples of designations Designation of a zinc/nickel alloy coating on a steel (Fe) component having a minimum local coating thickness of 8 μm (8) and iridescent passivation (Cn): Electroplated coating ISO Fe//ZnNi8//Cn//T0 Designation of a zinc/iron alloy coating on a steel (Fe) component having a minimum local coating thickness of 8 μm (8) with black passivation (Fn) and sealant (T2): Electroplated coating ISO Fe//ZnFe8//Fn//T2 Designation of a zinc coating on a steel (Fe) component having a minimum local coating thickness of 12 μm (12) and black passivation (Fn); application of a subsequent sealant is left to the choice of the coater: Electroplated coating ISO Fe//Zn12//Fn//Tx 5 Information to be supplied by the purchaser to the electroplater The minimum information to be provided by the purchaser to the electroplater shall comprise the following: a) the tensile strength of the component (to enable the requirements in 7.4 to be taken into account); b) component information (basis material, production method, heat treatment); c) information on significant surfaces as required by 4.4; d) designation of the coating to be applied (see 4.5). If desired, further requirements, such as appearance, friction properties and media resistance, may be imposed on the properties of the coatings to be applied and the testing extended accordingly. 3