SIST EN 4902:2026
(Main)Aerospace series - Surface treatments - Terms, definitions and test methods
Aerospace series - Surface treatments - Terms, definitions and test methods
This document specifies definitions to be used in documents related to surface treatments and test methods that can be referred by surface treatment standards.
Luft- und Raumfahrt - Oberflächenbehandlungen - Begriffe und Prüfverfahren
No Scope available
Série aérospatiale - Traitements de surface - Termes, définitions et méthodes d'essais
Le présent document spécifie les définitions à utiliser dans les documents liés aux traitements de surface et aux méthodes d’essais qui peuvent être cités en référence par les normes de traitement de surface.
Aeronavtika - Površinske prevleke - Izrazi, definicije in preskusne metode
General Information
- Status
- Published
- Public Enquiry End Date
- 30-Nov-2021
- Publication Date
- 04-Feb-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 23-Jan-2026
- Due Date
- 30-Mar-2026
- Completion Date
- 05-Feb-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
kSIST FprEN 4902:2025, titled Aerospace series - Surface treatments - Terms, definitions and test methods, is a standard developed by CEN that provides a comprehensive framework of terminology and test methods specifically related to surface treatments in the aerospace industry. This document is foundational for professionals working on aerospace manufacturing processes involving surface coatings and treatments, ensuring uniform understanding and measurement criteria across the industry.
The standard defines key terms used in surface treatment documentation and specifies standardized test methods that surface treatment standards can refer to. It promotes consistency, quality control, and reliability in aerospace surface treatment applications.
Key Topics
Standardized Terminology: kSIST FprEN 4902:2025 provides essential definitions used in aerospace surface treatment documentation, ensuring all stakeholders-from manufacturers to quality controllers-have a shared vocabulary. Key definitions include:
- Batch: Group of parts treated simultaneously in the same conditions.
- Manufacturer: Entity responsible for producing or assembling parts following relevant standards.
- Original Equipment Manufacturer (OEM): The design authority producing parts under a purchasing company’s brand.
- Pit (corrosion on anodized aluminum): Identified corrosion defects with specific characteristics such as geometry, halos, and corrosion by-products.
- Pit (defect in coating): Coating defects caused by gas release during deposition.
- Processor: Party applying the surface treatment process.
- Test specimen: Sample object used for assessing surface treatment performance.
Test Methods: The document specifies test methods critical for evaluating the integrity and quality of surface treatments in aerospace parts. For example:
- Cross-cut Adhesion Test (EN ISO 2409): Assesses the adhesion strength of coatings. The method involves cutting the coating and applying adhesive tape to evaluate how much coating detaches.
- Guidelines for tape properties and usage instructions to ensure accurate test performance.
Process Documentation: Definitions also cover process instruction documents that specify application scopes, environmental and safety rules, process parameters, and quality management requirements.
Applications
kSIST FprEN 4902:2025 serves multiple practical purposes in the aerospace sector:
- Quality Assurance: Enables aerospace manufacturers and surface treatment companies to verify coating adhesion and surface treatment efficacy through standardized testing.
- Supplier and OEM Coordination: Provides shared terminology to avoid ambiguities between OEMs, manufacturers, and processors in contracts, technical documentation, and quality criteria.
- Process Control and Audit: Assists in setting clear process instructions and evaluation methods to maintain strict aerospace surface treatment standards.
- Corrosion Prevention: Defines corrosion-related terms and test methods relevant to anodic coatings on aluminum alloys, a common aerospace material.
- Regulatory Compliance: As a CEN-related standard, it supports compliance with European aerospace industry regulations and harmonizes technical practices across national borders.
Related Standards
- EN ISO 2409: Paints and Varnishes - Cross-cut Test - Directly referenced for defining adhesion test procedures.
- Other aerospace surface treatment standards developed by ASD-STAN, focusing on coating specifications, process requirements, and environmental controls.
- International vocabulary databases such as the ISO Online Browsing Platform and IEC Electropedia provide terminological consistency referenced in EN 4902.
Conclusion
kSIST FprEN 4902:2025 is a critical standard for aerospace professionals involved in surface treatments, ensuring consistency in terminology and test methodologies. By adopting this standard, aerospace manufacturers and processors can improve communication, uphold high-quality surface treatments, and comply with international aerospace manufacturing requirements. It supports the overarching goal of durability, safety, and performance in aerospace components exposed to demanding operational environments.
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Frequently Asked Questions
SIST EN 4902:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Surface treatments - Terms, definitions and test methods". This standard covers: This document specifies definitions to be used in documents related to surface treatments and test methods that can be referred by surface treatment standards.
This document specifies definitions to be used in documents related to surface treatments and test methods that can be referred by surface treatment standards.
SIST EN 4902:2026 is classified under the following ICS (International Classification for Standards) categories: 01.040.49 - Aircraft and space vehicle engineering (Vocabularies); 49.040 - Coatings and related processes used in aerospace industry. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 4902:2026 has the following relationships with other standards: It is inter standard links to SIST EN ISO 2409:2020, SIST-TP CWA 17890:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 4902:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2026
Aeronavtika - Površinske prevleke - Izrazi, definicije in preskusne metode
Aerospace series - Surface treatments - Terms, definitions and test methods
Luft- und Raumfahrt - Oberflächenbehandlungen - Begriffe und Prüfverfahren
Série aérospatiale - Traitements de surface - Termes, définitions et méthodes d'essais
Ta slovenski standard je istoveten z: EN 4902:2026
ICS:
01.040.49 Letalska in vesoljska tehnika Aircraft and space vehicle
(Slovarji) engineering (Vocabularies)
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 4902
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2026
EUROPÄISCHE NORM
ICS 01.040.49; 49.040
English Version
Aerospace series - Surface treatments - Terms, definitions
and test methods
Série aérospatiale - Traitements de surface - Termes, Luft- und Raumfahrt - Oberflächenbehandlungen -
définitions et méthodes d'essais Begriffe und Prüfverfahren
This European Standard was approved by CEN on 23 June 2025.
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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4902:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Test methods . 5
Bibliography . 7
European foreword
This document (EN 4902:2026) 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 document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by July 2026, and conflicting national standards shall be withdrawn at
the latest by July 2026.
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.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: 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 defines terms to be used in documents related to surface treatments and specifies test
methods that can be referred by surface treatment standards.
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 2080, Metallic and other inorganic coatings — Surface treatment, metallic and other inorganic
coatings — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2080 and the following 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
batch
unless otherwise specified, parts of the same type (shape, size, material) treated at the same time in the
same facilities
3.2
manufacturer
company or person who manufactures parts or assembles components in accordance with the relevant
standards and declares the compliance of the delivered products with all applicable provisions of the
relevant standard(s)
Note 1 to entry: The manufacturer can also apply the process.
3.3
original equipment manufacturer
OEM
manufacturer who has the design authority and manufactures parts or components which are
purchased and retailed by the manuf
...
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