Aerospace series - Paints and varnishes - Cold curing intermediate coat

This document specifies the requirements for an intermediate coat to be applied over a primer for aerospace applications and with a topcoat for aerospace applications on top.
The properties specified in this document are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 and EN ISO 3270 and painted with primer listed in Table 1. Topcoat listed in Table 1 is to be applied on intermediate coat to this document. The ability of the material to be used for a specific application (e.g. alternative substrate, alternative primer, specific drying conditions, etc.) should be determined by supplementary tests to confirm that the requirements of this document are met.

Luft- und Raumfahrt - Beschichtungsstoffe - Zwischenbeschichtung, kalthärtend

Dieses Dokument legt die Anforderungen für eine Zwischenbeschichtung fest, die auf einen Primer zur Anwendung in der Luft- und Raumfahrt mit einer Deckbeschichtung aufzutragen ist.
Die in diesem Dokument festgelegten Eigenschaften ergaben sich an definierten Aluminiumlegierungs-Probenkörpern, die nach EN 3837 und EN ISO 3270 vorbereitet und mit einem Primer nach Tabelle 1 beschichtet wurden. Die auf eine Zwischenbeschichtung nach diesem Dokument aufzutragende Deckschicht ist in Tabelle 1 aufgeführt. Die Tauglichkeit eines Beschichtungsstoffes für eine spezifische Anwendung (z. B. alternativer Untergrund, alternativer Primer, spezifische Trocknungsbedingungen usw.) sollte durch zusätzliche Prüfungen festgelegt werden, die bestätigen, dass die Anforderungen dieses Dokuments erfüllt sind.

Série aérospatiale - Peintures et vernis - Couche intermédiaire polymérisant à température ambiante

Le présent document spécifie les exigences en matière de revêtement intermédiaire à appliquer sur un primaire pour les applications aérospatiales et recouvert d’une couche de finition pour les applications aérospatiales.
Les propriétés spécifiées dans le présent document sont obtenues sur des éprouvettes en alliage d’aluminium spécifiques, préparées conformément à l’EN 3837 et l’EN ISO 3270 et peintes avec un primaire indiqué dans le Tableau 1. La couche de finition mentionnée dans le Tableau 1 doit être appliquée sur le revêtement intermédiaire selon le présent document. Il convient de déterminer l’aptitude du matériau à être utilisé pour une application spécifique (par exemple : subjectile de remplacement, primaire de remplacement, conditions spécifiques de séchage, etc.) par des essais complémentaires afin de confirmer le respect des exigences du présent document.

Aeronavtika - Barve in laki - Vmesni premaz, ki se suši pri sobni temperaturi

Ta standard določa zahteve za vmesni premaz, ki se nanese prek osnovnega premaza za aeronavtično uporabo, prek njega pa se nanese vrhnji premaz za aeronavtično uporabo. Lastnosti, navedene v tem dokumentu, so pridobljene na podlagi opredeljenih preskusnih primerkov iz aluminijeve zlitine, pripravljenih v skladu s standardoma EN 3837 in EN ISO 3270 ter premazanih z osnovnim premazom, navedenim v preglednici 1. Na vmesni premaz iz tega dokumenta je treba nanesti vrhnji premaz, naveden v preglednici 1. Zmožnost materiala za uporabo za določen namen (npr. alternativni substrat, alternativni osnovni premaz, določene pogoje sušenja ipd.) naj se določi z dodatnimi preskusi, s katerimi se potrdi, da so izpolnjene zahteve tega dokumenta.

General Information

Status
Published
Publication Date
24-Sep-2019
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
25-Sep-2019
Completion Date
25-Sep-2019

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SLOVENSKI STANDARD
SIST EN 4476:2019
01-december-2019
Nadomešča:
SIST EN 4476:2011
Aeronavtika - Barve in laki - Vmesni premaz, ki se suši pri sobni temperaturi
Aerospace series - Paints and varnishes - Cold curing intermediate coat
Luft- und Raumfahrt - Beschichtungsstoffe - Zwischenbeschichtung
raumtemperaturhärtend
Série aérospatiale - Peintures et vernis - Couche intermédiaire polymérisant à
température ambiante
Ta slovenski standard je istoveten z: EN 4476:2019
ICS:
49.040 Prevleke in z njimi povezani Coatings and related
postopki, ki se uporabljajo v processes used in aerospace
letalski in vesoljski industriji industry
87.040 Barve in laki Paints and varnishes
SIST EN 4476:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 4476:2019
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SIST EN 4476:2019
EN 4476
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2019
EUROPÄISCHE NORM
ICS 49.040 Supersedes EN 4476:2011
English Version
Aerospace series - Paints and varnishes - Cold curing
intermediate coat

Série aérospatiale - Peintures et vernis - Couche Luft- und Raumfahrt - Beschichtungsstoffe -

intermédiaire polymérisant à température ambiante Zwischenbeschichtung raumtemperaturhärtend

This European Standard was approved by CEN on 26 May 2019.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4476:2019 E

worldwide for CEN national Members.
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SIST EN 4476:2019
EN 4476:2019 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 6

4 Classification ..................................................................................................................................................... 7

5 Batch release and qualification testing ................................................................................................... 7

6 Designation ..................................................................................................................................................... 12

Annex A (normative) Method for the determination of ability to selectively remove the finish .... 13

Annex B (normative) Method for the determination of ability to restore the paint system after

removal ............................................................................................................................................................. 14

Annex C (normative) Composition of reference paint remover .................................................................. 15

Annex D (informative) Evolution sheet ................................................................................................................ 16

Bibliography .................................................................................................................................................................. 17

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SIST EN 4476:2019
EN 4476:2019 (E)
European foreword

This document (EN 4476:2019) has been prepared by the Aerospace and Defence Industries Association

of Europe - Standardization (ASD-STAN).

After enquiries and votes carried out in accordance with the rules of this Association, this Standard has

received the approval of the National Associations and the Official Services of the member countries of

ASD, prior to its presentation to CEN.

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 2020, and conflicting national standards shall be

withdrawn at the latest by March 2020.

Attention is drawn to the possibility that some of the elements 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 4476:2011

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, France, Germany, Greece, Hungary, Iceland, Ireland,

Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United

Kingdom.
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SIST EN 4476:2019
EN 4476:2019 (E)
Introduction

The intermediate coating to this document incorporated in a paint scheme between primer and topcoat

finish will allow selective removal of top coat finish using a benzyl alcohol-based paint remover. An

example for the composition of a benzyl alcohol based is given in Annex C. If not otherwise agreed

between manufacturer and purchaser of intermediate coating benzyl alcohol mixtures diluted with

approximate 60 % water can be used for testing.

The paint scheme, including this intermediate coating is intended for application to metallic and non-

metallic surfaces to provide equivalent protection against corrosion, mechanical damage and resistance

to aircraft fluids so that provided by a paint scheme consisting of primer and topcoat paint.

Primer and topcoat used in combination with intermediate coating to this standard has to be defined by

customer. Pre-treatment of test specimens for primer paint application to be defined by customer.

Table 1 — Coatings
Primer

EN 2435-1 to EN 2435-5 Corrosion resistant chromated two component cold curing primer

Corrosion resistant chromate free two component cold curing epoxy
EN 2436-1 to EN 2436-6
primer
Chromate free non corrosion inhibiting two components cold curing
EN 4687
primer for military application
Corrosion inhibiting two components cold curing primer for military
EN 4688
application
Top Coats
EN 2434-1 to EN 2434-5 Two component cold curing polyurethane finish
Two components cold curing polyurethane finish - High flexibility and
EN 4689
chemical agent resistance for military application

1) If not otherwise agreed between manufacturer and customer following primers and topcoats can be used for

qualification of intermediate primer to this document.
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SIST EN 4476:2019
EN 4476:2019 (E)
1 Scope

This document specifies the requirements for an intermediate coat to be applied over a primer for

aerospace applications and with a topcoat for aerospace applications on top.

The properties specified in this document are obtained on defined aluminium alloy test pieces prepared

in accordance with EN 3837 and EN ISO 3270 and painted with primer listed in Table 1. Topcoat listed in

Table 1 is to be applied on intermediate coat to this document. The ability of the material to be used for

a specific application (e.g. alternative substrate, alternative primer, specific drying conditions, etc.)

should be determined by supplementary tests to confirm that the requirements of this document are met.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 2334, Aerospace series — Chromic-sulphuric acid pickle of aluminium and aluminium alloys

EN 2379, Aerospace series — Fluids for assessment of non-metallic materials

EN 2435 (all parts), Aerospace series — Paints and varnishes — Corrosion resistant chromated two

component cold curing primer

EN 3837, Aerospace series — Paints and varnishes — Nature and methods for surface preparation of test

pieces in aluminium alloys
EN 3840,Aerospace series — Paints and varnishes — Technical specification

EN 4160, Aerospace series — Paints and varnishes — Determination of the effect of thermal exposure

EN ISO 1513, Paints and varnishes — Examination and preparation of test samples

EN ISO 1518-1, Paints and varnishes — Determination of scratch resistance — Part 1: Constant loading

method
EN ISO 1520, Paints and varnishes — Cupping test
EN ISO 2409, Paints and varnishes — Cross-cut test

EN ISO 2431, Paints and varnishes — Determination of flow time by use of flow cups

EN ISO 2811 (all parts), Paints and varnishes — Determination of density

EN ISO 2812-2, Paints and varnishes — Determination of resistance to liquids — Part 2: Water immersion

method

2) Published as ASD-STAN Prestandard at the date of publication of this standard by AeroSpace and Defence

industries Association of Europe - Standardization (ASD-STAN), http://www.asd-stan.org/

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SIST EN 4476:2019
EN 4476:2019 (E)

EN ISO 2884-1, Paints and varnishes — Determination of viscosity using rotary viscometers — Part 1: Cone-

and-plate viscometer operated at a high rate of shear

EN ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content

EN ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for

conditioning and testing
EN ISO 3679, Determination of flash point — Rapid equilibrium closed cup method

EN ISO 9117-1, Paints and varnishes — Drying tests — Part 1: Determination of through-dry state and

through-dry time

EN ISO 9117-3, Paints and varnishes — Drying tests — Part 3: Surface-drying test using ballotini

EN ISO 9514, Paints and varnishes — Determination of the pot life of multicomponent coating systems —

Preparation and conditioning of samples and guidelines for testing

EN ISO 11890-1, Paints and varnishes — Determination of volatile organic compound (VOC) content —

Part 1: Difference method
ISO 3696, Water for analytical laboratory use — Specification and test methods

ISO 3847, Liquid flow measurement using end depth method in channels with a free overfall

ISO 4618, Paints and varnishes — Terms and definitions
ISO 18481, Liquid flow measurement using end depth method
...

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