EN 15646:2009

Electrodeposited coatings - Electroplated coatings of aluminium and aluminium alloys with supplementary treatment - Requirements and test methods

This European Standard specifies requirements for electrodeposited aluminium and aluminium alloy coatings on iron materials, plastic substrates, titanium materials, nickel materials and non-metallic substrate materials rendered conductive, such as plastics. The coatings serve either as corrosion or galvanic corrosion protection, as well as for other technical applications.

Galvanische Überzüge - Galvanische Aluminium- und Aluminium-Legierungs-Überzüge mit zusätzlicher Behandlung - Anforderungen und Prüfverfahren

Diese Europäische Norm legt Anforderungen an galvanisch abgeschiedene Überzüge aus Aluminium und Aluminiumlegierungen auf Eisenwerkstoffen, auf Grundwerkstoffen aus Kunststoff, auf Titanwerkstoffen, Nickelwerkstoffen und leitfähig gemachten nichtmetallischen Grundmaterialien, z. B. Kunststoffen, fest. Die Überzüge dienen als Korrosions  bzw. Kontaktkorrosionsschutz und für andere technische Anwendungen.

Revêtements électrolytiques - Dépôts électrolytiques d'aluminium et d'alliages d'aluminium avec traitement complémentaire - Exigences et méthodes d'essai

La présente Norme européenne spécifie les exigences relatives aux revêtements électrolytiques d’aluminium
et d’alliage d’aluminium sur les matériaux ferreux, les substrats plastiques, le titane, le nickel et les substrats
non métalliques rendus conducteurs, comme le plastique. Les revêtements servent de protection contre la
corrosion ou contre la corrosion bimétallique, ainsi que pour d’autres applications techniques.

Galvansko nanesene prevleke - Galvanske prevleke aluminija in aluminijevih zlitin z dodatno obdelavo - Zahteve in preskusne metode

General Information

• Status: Published
• Publication Date: 17-Mar-2009
• Withdrawal Date: 29-Sep-2009
• ICS: 25.220.40 - Metallic coatings
• Technical Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Drafting Committee: CEN/TC 262/WG 12 - Maintenance and ISO co-ordination
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 03-Dec-2024
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 15646:2009 - Electrodeposited coatings - Electroplated coatings of aluminium and aluminium alloys with supplementary treatment - Requirements and test methods

Overview

EN 15646:2009 (CEN) specifies requirements and test methods for electrodeposited (electroplated) coatings of aluminium and aluminium alloys with supplementary treatments. It covers coatings applied to iron/steel, plastics rendered conductive, titanium, nickel and other non‑metallic conductive substrates. The coatings are intended primarily for corrosion protection (including galvanic protection) and other technical applications. The standard was published by CEN in 2009 and includes designation rules, purchaser information, and normative test procedures.

Key topics and technical requirements

• Scope and designation: Rules for identifying coatings by substrate, coating type and supplementary treatments (see Clause 5). Purchasers must supply essential information such as finish, sampling, and any special requirements (Clause 4).
• Coating types: Differentiates aluminium and aluminium‑alloy electrodeposits and discusses intermediate layers and alloying considerations (Clauses 6 and 7).
• Supplementary treatments: Conversion coatings and other after‑treatments to improve corrosion resistance and appearance are covered (Clause 5.5, Annex C).
• Performance requirements:
  • Appearance: finish categories and acceptable surface defects (Clause 7.2).
  • Coating thickness and adhesion: requirements and inspection methods (Clause 7.3–7.4).
  • Corrosion resistance: accelerated test criteria including salt spray and alternate immersion procedures (Clause 7.5, Annex A).
• Test methods & sampling: References established methods such as EN ISO 9227 (salt spray), EN ISO 11130 (alternate immersion), EN ISO 10289 (rating), ISO 4519 (sampling) (Clause 2, Annex A).
• Terminology & chemistry: Defines key terms like aprotic solution and complex aluminium compound used in aluminium electroplating (Clause 3).
• Safety & IP: Notes on hazardous substances regulation and declared patent interests related to certain electrolyte formulations (Foreword / Introduction).

Practical applications and users

EN 15646:2009 is used by:

• Metal finishing shops and electroplaters specifying or applying electrodeposited aluminium coatings.
• OEMs and specifiers in automotive, aerospace, marine, and industrial equipment seeking galvanic/corrosion protection.
• Quality managers, inspection labs and testing houses that perform thickness, adhesion and accelerated corrosion testing.
• Designers and procurement teams who must include coating designations, finish samples, and acceptance criteria in contracts.

Related standards

• EN ISO 9227 - Salt spray test (corrosion)
• EN ISO 11130 - Alternate immersion test
• EN ISO 10289 - Rating of corrosion tests
• ISO 4519 - Sampling procedures
• EN 12487, EN 12508, EN 12540 - Related corrosion and coating vocabularies and specifications

EN 15646:2009 provides a practical framework for specifying, applying and testing electroplated aluminium coatings to ensure consistent corrosion protection and performance across industries.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Galvansko nanesene prevleke - Galvanske prevleke aluminija in aluminijevih zlitin z dodatno obdelavo - Zahteve in preskusne metodeGalvanische Überzüge - Galvanische Aluminium- und Aluminium-Legierungs-Überzüge mit zusätzlicher Behandlung - Anforderungen und PrüfverfahrenRevetements électrolytiques - Revetements électrolytiques d'aluminium et d'alliages d'aluminium avec traitement supplémentaire - Exigences et méthodes d'essaiElectrodeposited coatings - Electroplated coatings of aluminium and aluminium alloys with supplementary treatment - Requirements and test methods77.120.10Aluminij in aluminijeve zlitineAluminium and aluminium alloys25.220.40Kovinske prevlekeMetallic coatingsICS:Ta slovenski standard je istoveten z:EN 15646:2009SIST EN 15646:2009en,fr,de01-junij-2009SIST EN 15646:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15646March 2009ICS 25.220.40 English VersionElectrodeposited coatings - Electroplated coatings of aluminiumand aluminium alloys with supplementary treatment -Requirements and test methodsRevêtements électrolytiques - Dépôts électrolytiquesd'aluminium et d'alliages d'aluminium avec traitementcomplémentaire - Exigences et méthodes d'essaiGalvanische Überzüge - Galvanische Aluminium- undAluminium-Legierungs-Überzüge mit zusätzlicherBehandlung - Anforderungen und PrüfverfahrenThis European Standard was approved by CEN on 14 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15646:2009: ESIST EN 15646:2009

Corrosion tests . 15A.1Alternating immersion test in accordance with EN ISO 11130:1999 . 15A.2Test solution . 15A.3Standard atmosphere . 15A.4Test . 15Annex B (informative)
Fields of application . 16B.1Riveted joints, retaining ring bolts . 16B.2Welded components, e.g. welding studs . 16B.3High temperature applications . 16B.4Sea water resistance . 16B.5Aerospace . 16SIST EN 15646:2009

General process information . 17C.1Procedure . 17C.2Surface pretreatment . 17C.3Coating systems . 18Bibliography . 19 SIST EN 15646:2009

The holder of this patent right has assured CEN that he is willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with CEN. Information may be obtained from: Aluminal Oberflächentechnik GmbH & Co.KG Auf der Birke 2 D-56412
Heiligenroth Rasant-Alotec Beschichtungstechnik GmbH Zur Kaule 1 D-51491
Overath Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. CEN shall not be held responsible for identifying any or all such patent rights.” SIST EN 15646:2009

e) the position on the surface for unavoidable defects, such as rack or contact marks and the limits for acceptable defects on the refined and non-refined product (see 7.2); f) the finish required, for example bright, dull, satin or other finish, preferably with a sample of the finish; g) sampling methods, acceptance levels or any other inspection requirements, if different from those given in ISO 4519 (see Clause 9); h) the standards for any thickness, corrosion or adhesion test requirements (see Clause 8); i) requirements for supplementary treatment if applicable (see 5.5);
j) any requirements for a mass fraction of alloy elements greater than 30 % (see 6.2). 4.2 A
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