SIST EN 4688:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Beschichungsstoffe - Zweikomponenten Grundbeschichtung, korrosionshemmend, raumtemperaturhärtend, für militärische AnwendungSérie aérospatiale - Peinture et vernis - Peinture primaire anti corrosion chromate à deux composants polymérisant à température ambiante pour applications militairesAerospace series - Paints and varnishes - Corrosion inhibiting two components cold curing primer for military application95.020Vojaška tehnika. Vojaške zadeve. OrožjeMilitary engineering. Military affairs. Weapons49.040Prevleke 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 4688:2012SIST EN 4688:2012en,de01-september-2012SIST EN 4688:2012SLOVENSKI
STANDARD



SIST EN 4688:2012



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4688
March 2012 ICS 49.040 English Version
Aerospace series - Paints and varnishes - Corrosion inhibiting two components cold curing primer for military application
Série aérospatiale - Peinture et vernis - Peinture primaire anti corrosion chromate à deux composants polymérisant à température ambiante pour applications militaires
Luft- und Raumfahrt - Beschichungsstoffe - Zweikomponenten Grundbeschichtung, korrosionshemmend, raumtemperaturhärtend, für militärische Anwendung This European Standard was approved by CEN on 21 January 2012.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4688:2012: ESIST EN 4688:2012



EN 4688:2012 (E) 2 Contents Page Foreword .3 1 Scope .4 2 Normative references .4 3 Terms and definitions .6 4 Surface pretreatment .7 5 Classification .7 6 Batch release and qualification testing .7 7 Designation . 18
SIST EN 4688:2012



EN 4688:2012 (E) 3 Foreword This document (EN 4688:2012) 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 Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2012, and conflicting national standards shall be withdrawn at the latest by September 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] 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 European Standard: 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 4688:2012



EN 4688:2012 (E) 4 1 Scope This European Standard defines the requirements for a two components, high corrosion inhibiting epoxy primer. The coating should be suitable for use on suitably prepared metallic substrates, chromic acid anodized or conversion coated aluminium alloys, fibre reinforced composite materials and other suitably prepared substrates. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2101, Aerospace series — Chromic acid anodizing of aluminium and wrought aluminium alloys EN 2334, Aerospace series — Chromic-sulphuric acid pickle of aluminium and aluminium alloys EN 2437, Aerospace series — Chromate conversion coatings (yellow) for aluminium and aluminium alloys EN 3212, Aerospace series — Paints and varnishes — Corrosion test by alternate immersion in a buffered sodium chloride solution EN 3837, Aerospace series — Paints and varnishes — Nature and method for surface preparation of test pieces in aluminium alloys 1) EN 3840, Aerospace series — Paints and varnishes — Technical specification EN 3847, Aerospace series — Paints and varnishes — Determination of sedimentation rating 1) EN 4160, Aerospace series — Non-metallic materials — Paints and varnishes — Test methods — Determination of the effect of thermal exposure 1) EN 4687, Aerospace series — Paints and varnishes — Chromate free non corrosion inhibiting two components cold curing primer for military application
EN 4689, Aerospace series — Paints and varnishes — Two components cold curing polyurethane finish — High flexibility and chemical agent resistance for military application
EN ISO 1513, Paints and varnishes — Examination and preparation of test samples EN ISO 1518, Paints and varnishes — Scratch test EN ISO 1519, Paints and varnishes — Bend test (cylindrical mandrel) EN ISO 1520, Paints and varnishes — Cupping test EN ISO 1524, Paints, varnishes and printing inks — Determination of fineness of grind
1) Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). SIST EN 4688:2012



EN 4688:2012 (E) 5 EN ISO 2409, Paints and varnishes — Cross-cut test EN ISO 2431, Paints and varnishes — Determination of flow time by use of flow cups EN ISO 2811-1, Paints and varnishes — Determination of density — Part 1: Pyknometer method EN ISO 2811-2, Paints and varnishes — Determination of density — Part 2: Immersed body (plummet) method EN ISO 2811-3, Paints and varnishes — Determination of density — Part 3: Oscillation method EN ISO 2811-4, Paints and varnishes — Determination of density — Part 4: Pressure cup method EN ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in liquids other than water EN ISO 2812-2, Paints and varnishes — Determination of resistance to liquids — Part 2: Water immersion method EN ISO 2813, Paints and varnishes — Determination of specular gloss of non-metallic paint films at 20°, 60° and 85° EN ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content EN ISO 3675, Crude petroleum and liquid petroleum products — Laboratory determination of density — Hydrometer method EN ISO 3678, Paints and varnishes — Print-free test EN ISO 3679, Determination of flash point — Rapid equilibrium closed cup method EN ISO 3680, Determination of flash/no flash — Rapid equilibrium closed cup method EN ISO 4623-2, Paints and varnishes — Determination of resistance to filiform corrosion — Part 2: Aluminium substrates EN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of blistering EN ISO 4628-8, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 8: Assessment of degree of delamination and corrosion around a scribe EN ISO 4628-10, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 10: Assessment of degree of filiform corrosion EN ISO 6270-1, Paints and varnishes — Determination of resistance to humidity — Part 1: Continuous condensation EN ISO 9117-1, Paints and varnishes — Drying tests — Part 1: Determination of through-dry state and through-dry time EN ISO 9117-3, Paints and varnishes — Drying tests — Part 3: Surface-drying test using ballotini EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests SIST EN 4688:2012



EN 4688:2012 (E) 6 EN ISO 9514, Paints and varnishes — Determination of the pot life of multicomponent coating systems — Preparation and conditioning of samples and guidelines for testing EN ISO 11890-1, Paints and varnishes — Determination of volatile organic compound (VOC) content — Part 1: Difference method ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and testing ISO 7724-1, Paints and varnishes — Colorimetry — Part 1: Principles ISO 7724-2, Paints and varnishes — Colorimetry — Part 2: Colour measurement ISO 7724-3, Paints and varnishes — Colorimetry — Part 3: Calculation of colour differences MIL-PRF-5606H, Performance specification: Hydraulic fluid, petroleum base; aircraft, missile, and ordnance. (NATO H-515) 2) MIL-PRF-6081D, Performance specification: Lubricating oil, jet engine. (NATO O-133) 2) MIL-PRF-23699F, Performance specification: Lubricating oil, aircraft turbine engine, synthetic base, NATO code number O-156 2) MIL-DTL-83133G, Detail specification: Turbine fuel, aviation, kerosene type, JP-8 (NATO F-34), NATO F-35, and JP-8+100 (NATO F-37) 2) AMS 1526B, Cleaner for aircraft exterior surfaces water-miscible, pressure- spraying type 3) AMS 1527B, Standard Practice for Operating Salt Spray (Fog) Apparatus 3)
AMS 1533A, Cleaner for exterior aircraft surfaces gel-type, solvent-base 3) ASTM B 117, Cleaner for exterior aircraft surfaces gel-type, solvent-base 4) DEF STAN 68-10, Corrosion Preventive, Water Displacing NATO Code: C-634 Joint Service Designation: PX-24 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3840 apply.
2) Published by: DoD National (US) MIL. Department of Defense http://www.defenselink.mil/ 3) Published by: SAE National (US) Society of Automotive Engineers http://www.sae.org/ 4) Published by: ASTM National (US) American Society for Testing and Materials http://www.astm.org/ SIST EN 4688:2012



EN 4688:2012 (E) 7 4 Surface pretreatment In accordance with EN 3837, the surface pretreatment applicable to aluminium alloy test panels are the following: EN 3837 — Procedure A : Sulfochromic pickling in accordance with EN 2334; EN 3837 — Procedure B : Chromic acid anodizing in accordance with EN 2101; EN 3837 — Procedure C : Chromate conversion coating in accordance with EN 2437. 5 Classification The primer is classified according to the following types: TYPE I: Standard solvent content (VOC < 680 g/l); TYPE II: Low volatile organic (VOC < 420 g/l); TYPE III: Waterborne (VOC < 350 g/l). 6 Batch release and qualification testing 6.1 General The general requirements for qualification and batch release testing shall be in accordance with (i.a.w.) EN 3840 and the applicable appendix for the specific material.
6.2 Qualification tests For product qualification, all tests defined in this standard, in the Tables 2 to 7, shall be performed. A minimum of three batches shall be tested for qualification purposes. 6.3 Batch acceptance testing The Manufacturer shall give evidence on the Test Report or the Certificate of Conformance that all the tests marked with the symbol * in this specification shall be performed for batch acceptance tests.
6.4 Compatibility of waterborne paints to solventborne paints The waterborne primer type III shall be compatible to solventborne primers type I and type II according to this standard and to type I and type II primers to EN 4687. All tests to demonstrate the compatibility are defined in Table 7 and shall be performed. 6.5 Purchaser batch release testing The purchaser may perform any of the test of this speci
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