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
- 21-Jan-2026
Relations
- 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
- Referred By
EN 4660-004:2011 - 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
Overview
EN 2284:1991 is a European standard developed by CEN that specifies the requirements for sulphuric acid anodizing of aluminium and wrought aluminium alloys, particularly for aerospace applications. This standard defines the performance characteristics and quality assurance measures for anodized coatings, either with or without sealing. It applies specifically to aluminium parts of categories 1 and 2 used in aerospace construction, ensuring durability, corrosion resistance, and overall coating quality suitable for high-demand aerospace environments.
Key Topics
Sulphuric Acid Anodizing Process
The standard outlines the sulphuric acid anodizing procedure, focusing on controlled parameters that affect the coating thickness, porosity, and bonding strength on aluminium and wrought aluminium alloys.Performance Requirements
Detailed criteria include coating thickness, uniformity, corrosion resistance, and adhesion to meet aerospace sector standards.Sealing Options
EN 2284:1991 addresses both sealed and unsealed anodizing finishes, providing guidelines on how sealing impacts protective qualities and maintenance.Quality Assurance and Testing
It emphasizes systematic quality checks during and after anodizing to ensure coating integrity, including inspection methods and compliance verification.Scope of Application
The standard applies to aluminium materials categorized under category 1 and 2 alloys, commonly utilized in aerospace structural and functional components.
Applications
The EN 2284:1991 standard plays a critical role in aerospace manufacturing and maintenance by specifying anodizing coatings that:
- Enhance corrosion resistance of aluminium parts exposed to harsh aerospace environments
- Improve wear resistance and surface durability of structural aluminium components
- Provide a reliable surface for further painting or adhesive bonding in aircraft assembly
- Ensure consistency in coating quality across aerospace supply chains
- Support compliance with aerospace industry safety and performance regulations
This standard is especially important for aerospace engineers, quality control specialists, and surface finishing professionals engaged in aluminium alloy treatment processes for aircraft and related aerospace equipment.
Related Standards
- EN 12373 Series - Standards on corrosion protection of aerospace metallic parts, complementing anodizing specifications.
- ISO 10074 - Surface treatment of aluminium for aerospace applications, including anodizing practices.
- EN 1651 - Aerospace aluminium alloys classifications relevant to material categories referenced in EN 2284.
- ISO 4449 - Guidelines for quality assurance of anodized coatings in various industrial sectors, useful for cross-referencing quality aspects.
By adhering to EN 2284:1991 alongside these related standards, aerospace manufacturers achieve consistent, high-performance anodized aluminium components essential for safety, durability, 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 3837:2019, EN 2876:2023, EN 4827:2019, EN 4535-2:2009, EN 13101:2002, EN 2286:2025, EN 2285:2025, EN 3904:2017, EN 4660-004:2011, EN 4174:2006, EN 4534-2:2009. 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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