prEN 6118

SLOVENSKI STANDARD
01-maj-2024
Aeronavtika - Premaz IVD iz čistega aluminija za pritrdilne elemente
Aerospace series - Pure aluminium IVD coating for fasteners
Luft- und Raumfahrt - Verfahrensspezifikation - Aluminiumschutz für
Verbindungselemente
Série aérospatiale - Revêtements IVD d’aluminium purs pour fixations
Ta slovenski standard je istoveten z: prEN 6118
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.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2024
ICS 49.040
English Version
Aerospace series - Pure aluminium IVD coating for
fasteners
Série aérospatiale - Revêtements IVD d'aluminium purs Luft- und Raumfahrt - Verfahrensspezifikation -
pour fixations Aluminiumschutz für Verbindungselemente
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

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. prEN 6118:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Technical requirements . 5
5 Process description . 5
5.1 General. 5
5.2 Pre-processing . 6
5.2.1 Surface preparation . 6
5.2.2 Plasma treatment . 6
5.3 Coating deposition . 6
5.4 Post-processing . 6
5.4.1 Glass-bead burnishing . 6
5.4.2 Conversion coating . 6
Annex A (normative) List of tests required . 7
Annex B (normative) Tests on test specimens and on fasteners . 8

European foreword
This document (prEN 6118:2024) 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 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 document is currently submitted to the CEN Enquiry.

1 Scope
This document defines the characteristics and the tests required to qualify and control lots of high
purity (≥99 %) aluminium coatings applied by ion-vapor deposition (IVD) on fasteners.
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 2437, Aerospace series — Chromate conversion coatings (yellow) for aluminium and aluminium alloys
EN 4729, Aerospace series — Trivalent chromium based chemical conversion coatings for aluminium and
aluminium alloys
EN ISO 2819, Metallic coatings on metallic substrates — Electrodeposited and chemically deposited
coatings — Review of methods available for testing adhesion (ISO 2819)
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus
MIL-DTL-5541, Chemical Conversion Coatings on Aluminum and Aluminum Alloys
MIL-DTL-83488, Coating, Aluminum, High Purity
NASM 1312, Fastener test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology 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
lot
set of fasteners of identical target specifications, produced in continuous or consecutive processes with
identical processing parameters
3.2
batch
set of fasteners, travellers and/or similar parts that are coated with identical parameters at the same
time or consecutively with the same coating equipment

Published by: ISO International Organization for Standardization http://www.iso.ch/.
Published by: ASTM International (US) https://www.astm.org/.
Published by: DoD National (US) Mil. Department of Defense https://www.defense.gov/.
3.3
new process
any IVD process that differs significantly from previously qualified processes
Note 1 to entry: This includes new of machine setup, new of pre- or post-processing methods, new target
composition of involved materials and/or chemicals, inclusion of additional processing steps and/or removal or
processing steps.
3.4
new supplier
any production site that newly introduces own production capabilities to produce IVD coatings
Note 1 to entry: renaming or relocation of a qualified production site is not a new supplier.
3.5
process qualification
set of investigations to be conducted to verify equivalent performance of coating with respect to this
specification produced by a newly developed or adapted coating method that fulfils the definition of a
new process, see 3.3
3.6
supplier qualification
set of investigations to be conducted to verify equivalent performance of coating with respect to this
specification produced by a new supplier, see 3.4
3.7
traveller
accompanying part of a lot or batch prepared to be a representative specimen to assess properties of
the coating, e.g., to assess coating thickness
4 Technical requirements
Unless otherwise specified, process qualification, supplier qualifications tests and lot release
inspections shall be performed as listed in Annex A Table A.1
...