EN 2284:1991
(Main)Aerospace series - Sulphuric acid anodizing of aluminium and wrought aluminium alloys
Aerospace series - Sulphuric acid anodizing of aluminium and wrought aluminium alloys
This standard specifies the required characteristics for the performance of sulphyric acid anodizing with or without sealing as well as quality assurance of the coating obtained. It applies to parts in aluminium and wrought aluminium alloys of category 1 and 2 (see clause 4) used in aerospace construction when reference is made to this standard.
Luft- und Raumfahrt - Schwefelsäure-Anodisieren von Aluminium und Aluminium-Knetlegierungen
Diese Norm legt die Anforderungen an das Schwefelsäureanodisieren mit und ohne Nachverdichten sowie die Qualitätssicherung der erhaltenen Überzüge fest. Sie ist für Teile aus Aluminium und Aluminium-Knetlegierungen der Gruppen 1 und 2 (siehe Abschnitt 4) in der Luft- und Raumfahrt und immer dann anzuwenden, wenn auf diese Norm Bezug genommen wird.
Série aérospatiale - Anodisation sulfurique de l'aluminium et des alliages d'aluminium corroyés
La présente norme spécifie les caractéristiques requises pour l'exécution de l'anodisation sulfurique, colmatée ou non colmatée, ainsi que le contrôle de qualité des couches obtenues. Elle s'applique aux pièces en aluminium et alliages d'aluminium corroyés des catégories 1 et 2 (voir article 4), destinées aux constructions aérospatiales et à condition d'être mentionnée sur le document de définition.
Aerospace series - Sulphuric acid anodizing of aluminium and wrought aluminium alloys
General Information
- Status
- Published
- Publication Date
- 16-Jul-1991
- Withdrawal Date
- 16-Jan-1992
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4 - Metallic
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 01-Jun-2017
- Completion Date
- 11-Feb-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
EN 4660-004:2019 - Aerospace series - Modular and Open Avionics Architectures - Part 004: Packaging - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 2284:1991 is a European standard published by CEN that details the requirements and quality assurance measures for sulphuric acid anodizing of aluminium and wrought aluminium alloys, specifically for aerospace applications. This standard covers both sealed and unsealed anodic coatings, ensuring enhanced corrosion resistance and surface protection for aluminium components in critical aerospace environments. EN 2284:1991 applies to parts made from category 1 and 2 aluminium and wrought aluminium alloys intended for use in aerospace construction when this standard is referenced.
Key Topics
- Sulphuric Acid Anodizing Process: Outlines procedures for anodizing aluminium and its wrought alloys, focusing on the use of sulphuric acid to produce protective oxide coatings.
- Sealing and Unsealing: Specifies requirements for both sealed and unsealed anodic coatings to provide flexibility based on the application's protective needs.
- Performance Characteristics: Details the minimum characteristics that anodized coatings should meet, such as thickness, adhesion, and surface finish.
- Quality Assurance: Establishes guidelines for inspecting and testing anodized coatings, ensuring consistency and reliability across aerospace components.
- Applicability: Includes parts manufactured from category 1 and 2 aluminium alloys as defined within the standard, used in aviation or space vehicles.
- Reference for Aerospace Engineering: Intended for use where high-performance corrosion protection and durable surface finishes are critical.
Applications
EN 2284:1991 is widely used in the aerospace industry for the treatment of aluminium parts due to the following practical benefits:
- Aerospace Parts Manufacturing: Ensures that aluminium structural and non-structural components meet strict durability and safety requirements.
- Corrosion Resistance: Enhances the life and integrity of aluminium parts exposed to harsh aerospace environments by providing a robust, corrosion-resistant surface.
- Surface Preparation: Offers a standardized approach for preparing aluminium surfaces for subsequent painting, bonding, or finishing processes.
- Quality Control and Compliance: Provides a recognized framework for quality assurance, helping manufacturers and suppliers demonstrate compliance with aerospace industry standards.
- Maintenance and Repair: Applicable during maintenance and overhaul of aircraft components, ensuring replaced or refurbished parts meet the same protection criteria.
Related Standards
When implementing the sulphuric acid anodizing process as per EN 2284:1991, consider referencing these related standards for comprehensive quality and compatibility:
- EN 12373 - Aluminium and aluminium alloys - Anodizing
- ISO 7599 - Anodizing of aluminium and its alloys - General specifications for anodic oxidation coatings on aluminium
- EN 485 - Aluminium and aluminium alloys - Sheet, strip, and plate - Technical conditions for inspection and delivery
- EN 573 - Aluminium and aluminium alloys - Chemical composition and forms of wrought products
By adhering to EN 2284:1991, aerospace manufacturers can ensure aluminium components meet rigorous European standards for performance, safety, and reliability, supporting innovation and safety in the aviation and space sectors. The standard guides organisations through best practices in anodizing, helping to maintain global competitiveness and regulatory compliance.
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Frequently Asked Questions
EN 2284:1991 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Sulphuric acid anodizing of aluminium and wrought aluminium alloys". This standard covers: This standard specifies the required characteristics for the performance of sulphyric acid anodizing with or without sealing as well as quality assurance of the coating obtained. It applies to parts in aluminium and wrought aluminium alloys of category 1 and 2 (see clause 4) used in aerospace construction when reference is made to this standard.
This standard specifies the required characteristics for the performance of sulphyric acid anodizing with or without sealing as well as quality assurance of the coating obtained. It applies to parts in aluminium and wrought aluminium alloys of category 1 and 2 (see clause 4) used in aerospace construction when reference is made to this standard.
EN 2284:1991 is classified under the following ICS (International Classification for Standards) categories: 49.025.20 - Aluminium. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 2284:1991 has the following relationships with other standards: It is inter standard links to EN 2552:1992, EN 4535-2:2016, EN 4660-004:2019, EN 13101:2002, EN 4827:2024, EN 2286:2025, EN 4535-2:2009, EN 4827:2019, EN 4534-2:2009, EN 4809:2017, EN 2876:2019, EN 4827:2017, EN 2286:2017, EN 3837:2019, EN 2876:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2284:1991 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Sulphuric acid anodizing of aluminium and wrought aluminium alloysLuft- und Raumfahrt - Schwefelsäure-Anodisieren von Aluminium und Aluminium-KnetlegierungenSérie aérospatiale - Anodisation sulfurique de l'aluminium et des alliages d'aluminium corroyésAerospace series - Sulphuric acid anodizi
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