EN 4474:2024

SLOVENSKI STANDARD
01-februar-2025
Aeronavtika - Organski premazi, pigmentirani z aluminijem - Premazne metode
Aerospace series - Aluminium pigmented organic coatings - Coating methods
Luft- und Raumfahrt - Aluminiumpigmentierte organische Beschichtungen -
Beschichtungsverfahren
Série aérospatiale - Revêtements alumino-organiques - Méthodes d’application
Ta slovenski standard je istoveten z: EN 4474:2024
ICS:
49.025.20 Aluminij Aluminium
49.040 Prevleke in z njimi povezani Coatings and related
postopki, ki se uporabljajo v processes used in aerospace
letalski in vesoljski industriji industry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4474
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 49.040 Supersedes EN 4474:2016
English Version
Aerospace series - Aluminium pigmented organic coatings
- Coating methods
Série aérospatiale - Revêtements alumino-organiques - Luft- und Raumfahrt - Aluminiumpigmentierte
Méthodes d'application organische Beschichtungen - Beschichtungsverfahren
This European Standard was approved by CEN on 6 October 2024.

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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4474:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Equipment . 5
4.1 For application by dipping . 5
4.2 For application by spraying . 5
4.3 For curing. 5
5 Surface preparation . 5
6 Coating application . 6
6.1 General. 6
6.2 Application by dipping . 6
6.3 Application by spraying . 6
6.4 Other application methods . 7
7 Coating removal . 7
8 Quality assurance . 7
8.1 Fastener lot release requirements . 7
8.2 Process validation . 7
Annex A (normative) Quality assurance tests and sampling . 8
Bibliography . 10

European foreword
This document (EN 4474:2024) has been prepared by ASD STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, 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 May 2025, and conflicting national standards shall
be withdrawn at the latest by May 2025.
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 4474:2016.
— editorial revision to comply with the updated layout in use;
— clarification of test requirements and AQL levels.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, 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, Türkiye and the
United Kingdom.
1 Scope
This document specifies the application method and quality assurance for aluminium pigmented
coatings as per EN 4473 which may be applied to fasteners or other parts in titanium, titanium alloys,
nickel or cobalt based alloys and corrosion resisting steels.
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 ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409)
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
NASM 1312-12, Fastener Test Methods, Method 12: Thickness of Metallic Coatings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
production lot
parts subjected to the same aluminium pigmented coating application at the same time under the same
condition
3.2
pre-production part
part representing a future production part
3.3
scratch
gouged out or scoring of the coating or base material
3.4
sampling plan
plan according to which one or more samples are taken in order to obtain information and to reach a
decision, if possible
Published by: AIA National (US) Aerospace Industries Association of America, https://www.aia-
aerospace.org/.
3.5
acceptance quality limit
AQL
maximum percent defective (or the maximum number of defects per hundred units) that, for purposes
of sampling inspection, can be considered satis
...