EN 2436-002:2006

Aerospace series - Paints and varnishes - Corrosion resistant chromate-free two component cold curing primer - Part 002: High corrosion resistance

This standard specifies the requirements for a two component, cold curing, chromate-free epoxy or polyurethane, high corrosion resistant primer which can be used with or without a finish for aerospace applications.
The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 and ISO 3270. The ability of the material to be used for a specific application (e.g. alternative substrate, alternative primer, specific drying conditions etc.) shall be determined by supplementary tests to confirm that the requirements of this standard are met.

Luft- und Raumfahrt - Beschichtungsstoffe - Korrosionsbeständiger Zweikomponenten-Primer, kalthärtend chromatfrei - Teil 002: Hohe Korrosionsbeständigkeit

Diese Norm legt die Anforderungen an einen chromatfreien, kalthärtenden Zweikomponenten Primer auf Epoxid  oder Polyurethanharzbasis mit hoher Korrosionsbeständigkeit fest, der mit oder ohne Deckbeschichtung in der Luft  und Raumfahrt verwendet werden kann.
Die in dieser Norm festgelegten Eigenschaften werden anhand definierter Probenkörper aus Aluminiumlegie¬rung ermittelt, die nach EN 3837 und ISO 3270 vorbereitet werden. Die Eignung des für eine bestimmte An¬wendung zu verwendenden Materials (z. B. alternativer Trägerwerkstoff, alternativer Primer, bestimmte Trocknungsbedingungen usw.) ist durch zusätzliche Prüfungen bestimmen, um nachzuweisen, dass die Anforderungen dieser Norm erfüllt werden.

Série aérospatiale - Peintures et vernis - Peintures primaire anti-corrosion sans chromate à deux composants polymérisant à température ambiante - Partie 002 : Haute résistance à la corrosion

Aeronavtika - Barve in laki - Dvokomponentni temeljni premaz, korozijsko obstojen, brez kroma, ki se suši pri sobni temperaturi - 002. del: Visoka korozijska odpornost

General Information

• Status: Published
• Publication Date: 18-Jul-2006
• Withdrawal Date: 30-Jan-2007
• ICS: 49.040 - Coatings and related processes used in aerospace industry
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 5 - Non-Metallic
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 01-Jun-2017
• Completion Date: 11-Feb-2026
• Ref Project: SIST EN 2436-002:2009 - Aerospace series - Paints and varnishes - Corrosion resistant chromate-free two component cold curing primer - Part 002: High corrosion resistance

Relations

• Refers: ISO 1513:1992 - Paints and varnishes — Examination and preparation of samples for testing
• Effective Date: 09-Feb-2026
• Refers: ISO 3696:1987 - Water for analytical laboratory use — Specification and test methods
• Effective Date: 09-Feb-2026
• Refers: EN 3840:2007 - Aerospace series - Paints and varnishes - Technical specification
• Effective Date: 28-Jan-2026
• Refers: EN 2334:1997 - Aerospace series - Chromic-sulphuric acid pickle of aluminium and aluminium alloys
• Effective Date: 28-Jan-2026
• Refers: EN 2434-004:2010 - Aerospace series - Paints and varnishes - Two component cold curing polyurethane finish - Part 004: High flexibility
• Effective Date: 28-Jan-2026
• Referred By: EN 15483:2008 - Ambient air quality - Atmospheric measurements near ground with FTIR spectroscopy
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 17621:2015 - Workplace atmospheres - Short term detector tube measurement systems - Requirements and test methods (ISO 17621:2015)
• Effective Date: 28-Jan-2026
• Referred By: EN 14662-3:2005 - Ambient Air Quality - Standard method for the measurement of benzene concentrations - Part 3: Automated pumped sampling with in situ gas chromatography
• Effective Date: 28-Jan-2026
• Referred By: EN 4588:2007 - Aerospace series - Paints and varnishes - Two component, cold curing polyurethane paint, anti slip
• Effective Date: 28-Jan-2026
• Referred By: EN 14662-2:2005 - Ambient air quality - Standard method for measurement of benzene concentrations - Part 2 : Pumped sampling followed by solvent desorption and gas chromatography
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 19739:2005 - Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004)
• Effective Date: 28-Jan-2026

Overview

EN 2436-002:2006 is a European standard developed by CEN for the aerospace sector, specifying the requirements for a chromate-free, two-component, cold curing primer offering high corrosion resistance. This primer can be based on either epoxy or polyurethane resin chemistries and is designed for use on aluminum alloys in aerospace applications. It can be used independently or as a base layer beneath finishing coats, supporting efforts towards safer and environmentally-friendly coating solutions without sacrificing durability or protection.

Key Topics

• Chromate-Free Technology: Focuses on providing corrosion protection without the use of chromium compounds, aligning with strict environmental and occupational health requirements in the aerospace industry.
• Two-Component, Cold Curing System: Involves mixing separate base and activator components, yielding a primer that cures at ambient temperatures, aiding ease of application and scheduling flexibility.
• High Corrosion Resistance: Meets rigorous requirements for corrosion protection on prepared aluminum alloy substrates, verified through standardized test procedures.
• Material Classification: The primer is available in two principal types:
  • Type A: Epoxy-based, using a reaction between epoxy resins and amino-functional activators.
  • Type B: Polyurethane-based, involving hydroxyl-functional resin and a polyisocyanate activator.
• Testing and Quality Assurance: Conformance is established through batch release and qualification testing on defined substrates, with further supplementary tests required for alternative use cases or substrates.

Applications

The EN 2436-002:2006 primer is engineered primarily for the aerospace industry, especially where high-performance corrosion resistance is critical for aluminum structures and components. Typical applications include:

• Fuselage, wings, and structural elements: Providing protective base layers for aircraft made from aluminum alloys.
• Maintenance and repair operations: Suitable for repainting and refurbishing aerospace components, improving longevity and resistance to environmental factors.
• Chromate-free initiatives: Supports compliance with REACH and other environmental regulations, eliminating the use of harmful chromate-based inhibitors while retaining effective corrosion protection.

This standard also applies wherever high performance coatings are needed for aerospace-grade aluminum, and is designed to support use with or without finishing topcoats, offering versatility across diverse construction and maintenance scenarios.

Related Standards

EN 2436-002:2006 is part of a broader series that addresses non-metallic coatings and processes in aerospace applications. Key related standards include:

• EN 3840: Technical specification for paints and varnishes in aerospae, referenced extensively for testing, application, and quality requirements.
• EN 3837: Preparation of aluminum alloy test specimens, ensuring consistent testing surfaces and comparability.
• EN 2434-004: Specifies requirements for two-component polyurethane finish coatings, often used as a finishing layer over the primer.
• EN 2334: Chrome-sulphuric acid pickling of aluminum alloys, a common preparation step before coating.
• ISO 3270: Specifies conditioning standards for test materials.
• ISO 1513: Preparation and examination of paint samples for testing.
• Other standards such as EN 2379 (assessment fluids), EN 4385 (non-metallic materials organization), and ISO 3696 (laboratory water) provide additional context for testing and application processes.

Practical Value

• Enhanced protection: Delivers high corrosion resistance for aircraft components, extending service life and reducing maintenance costs.
• Regulatory compliance: Enables aerospace manufacturers to meet environmental regulations by using chromate-free primers.
• Quality and consistency: Standardized testing and application methods ensure reliable primer performance across suppliers and projects.
• Versatility: Can be used with or without a finishing coat and evaluated for alternative substrates or drying conditions as required.

By adhering to EN 2436-002:2006, aerospace manufacturers, maintenance providers, and coating suppliers benefit from reliable, high-performance protection and support continuous improvement towards safer and greener technologies.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Barve in laki - Dvokomponentni temeljni premaz, korozijsko obstojen, brez kroma, ki se suši pri sobni temperaturi - 002. del: Visoka korozijska odpornostLuft- und Raumfahrt - Beschichtungsstoffe - Korrosionsbeständiger Zweikomponenten-Primer, kalthärtend chromatfrei - Teil 002: Hohe KorrosionsbeständigkeitSérie aérospatiale - Peintures et vernis - Peintures primaire anti-corrosion sans chromate à deux composants polymérisant à température ambiante - Partie 002 : Haute résistance à la corrosionAerospace series - Paints and varnishes - Corrosion resistant chromate-free two component cold curing primer - Part 002: High corrosion resistance49.040Prevleke in z njimi povezani postopki, ki se uporabljajo v letalski in vesoljski industrijiCoatings and related processes used in aerospace industryICS:Ta slovenski standard je istoveten z:EN 2436-002:2006SIST EN 2436-002:2009en,de01-junij-2009SIST EN 2436-002:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2436-002July 2006ICS 49.040 English VersionAerospace series - Paints and varnishes - Corrosion resistantchromate-free two component cold curing primer - Part 002:High corrosion resistanceSérie aérospatiale - Peintures primaire anti-corrosion sanschromate à deux composants polymérisant à températureambiante - Partie 002 : Haute résistance à la corrosionLuft- und Raumfahrt - Anstrichstoffe -Korrosionsbeständiger Zweikomponenten-Grundanstrich,kalthärtend chromatfrei - Teil 002: HoheKorrosionsbeständigkeitThis European Standard was approved by CEN on 27 February 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2436-002:2006: ESIST EN 2436-002:2009

EN 2434-004, Aerospace series — Paints and varnishes — Two component cold curing polyurethane finish — Part 004: High flexibility 1) EN 3837, Aerospace series — Paints and varnishes — Nature and method for surface preparation of test pieces in aluminium alloys1) EN 3840, Aerospace series — Paints and varnishes — Technical specification1) EN 4385, Aerospace series — Non-metallic materials — General organisation of standardisation — Links be-tween types of standards1) ISO 1513, Paints and varnishes — Examination and preparation of samples for testing ISO 3270, Paints and varnishes and their raw materials — Temperature and humidities for conditioning and testing ISO 3696, Water for analytical laboratory use — Specification and test methods TR 7000-9, Aerospace series — Non-metallic materials — Rules for the drafting and presentation of material standards — Part 9: Paints and varnishes2)
1) Published as ASD Prestandard at the date of publication of this standard. 2) Published as ASD Technical Report at the date of publication of the standard. SIST EN 2436-002:2009
...