SIST EN 4473:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VSHFLILNDFLMDLuft- und Raumfahrt - Aluminium pigmenttete Beschichtungen für Fixierungen - Technische LieferbedingungenSérie aérospatiale - Revêtements alumino-organiques pour fixations - Spécification techniqueAerospace series - Aluminium pigmented coatings for fasteners - Technical specification49.040Prevleke in z njimi povezani postopki, ki se uporabljajo v letalski in vesoljski industrijiCoatings and related processes used in aerospace industry49.030.01Vezni elementi na splošnoFasteners in general49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 4473:2010SIST EN 4473:2010en01-december-2010SIST EN 4473:2010SLOVENSKI
STANDARD



SIST EN 4473:2010



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4473
September 2010 ICS 49.040 English Version
Aerospace series - Aluminium pigmented coatings for fasteners - Technical specification
Série aérospatiale - Revêtements alumino-organiques pour fixations - Spécification technique
Luft- und Raumfahrt - Aluminium pigmenttete Beschichtungen für Fixierungen - Technische Lieferbedingungen This European Standard was approved by CEN on 5 May 2010.
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 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 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 and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4473:2010: ESIST EN 4473:2010



EN 4473:2010 (E) 2 Contents Page Foreword .31 Scope .42 Normative references .43 Terms and definitions .54 Technical specifications .64.1 Product .64.2 Product composition .64.3 Product application .65 Quality assurance .65.1 Qualification .65.2 Acceptance .66 Requirements .6Annex A (normative)
Test coupons for paint adhesion test . 12Annex B (normative)
Test specimen for ohmic resistance measurement . 13Annex C (normative)
Lightning current simulation and swept lightning . 14C.1 Lightning current simulation . 14C.2 Test specimens distribution . 14C.3 Swept lightning (on countersunk head fastener) . 14C.3.1 Current waveforms . 14C.3.2 Test method . 15C.3.3 Specimens . 15C.4 Lightning current transfer condition (on protruding head fastener) . 15C.4.1 Current waveforms . 15C.4.2 Test method . 16 SIST EN 4473:2010



EN 4473:2010 (E) 3 Foreword This document (EN 4473:2010) 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 March 2011, and conflicting national standards shall be withdrawn at the latest by March 2011. 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 and the United Kingdom. SIST EN 4473:2010



EN 4473:2010 (E) 4 1 Scope This European Standard defines the qualification test conditions for aluminium pigmented coatings applicable to fasteners in titanium, titanium alloys, nickel base alloys and corrosion resisting steels. The aluminium pigmented coatings are not applicable to fasteners in non-corrosion resistant steels. Temperature class: 315 °C 1)
Type I : Coating with chromate and a cetyl alcohol lubricant. Type II : Coating without chromate and an cetyl alcohol lubricant.
Type III : Coating with chromate, no additional lubricant. Type IV : Coating without chromate, no additional lubricant. 2 Normative references The following referenced documents are indispensable for the application 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. ISO 2409, Paints and varnishes — Cross-cut test ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests EN ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in liquids other than water (ISO 2812-1:2007) EN 4474, Aerospace series — Aluminium pigmented coatings — Coating methods EN 6117, Specification for bolts with cetyl alcohol 2)
EN 9133, Aerospace series — Quality management systems — Qualification Procedure for Aerospace Standards Parts TR 4676, Aluminium pigmented coatings — List of commercial products 3) NASM 1312-5, Fastener Test Methods; Method 5: Stress durability 4) NASM 1312-12, Fasteners Test Methods, Method 12: Thickness of metallic coatings 4) MIL-A-8625, Anodic coatings for aluminium and aluminium alloys 5)
1) Maximum operating temperature. 2) Published as ASD Prestandard at the date of publication of this standard. 3) Published as ASD Technical Report at the date of publication of this standard. 4) Published by: Aerospace Industries Association, 1000 Wilson Boulevard, Suite 1700, Arlington, VA 22209-3928, USA. 5) Published by: Department of Defense (DOD), the Pentagon, Washington, D.C. 20301 USA. SIST EN 4473:2010



EN 4473:2010 (E) 5 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 production lot product quantity of known composition (aluminium pigmented resin) prepared as one mixing using the same equipment 3.2 seam open surface defect 3.3 blister local convexity caused by a sub-surface inclusion of gas or liquid 3.4 nodule localized buildup or unmixed solid particles 3.5 pit void, hole in the surface as caused, for example, by corrosion 3.6 porosity fine holes or pores within the coating 3.7 functional surfaces functional surfaces are defined as surfaces in contact with mating structure and threaded portion such as  screws: under head bearing surface, shank, lead-in radius and thread surface if applicable;  nuts: bearing surfaces, thread surface;  spherical washers: bearing surfaces;  swaged collars: all surfaces. 3.8 generic part familly of similar parts such as:  screws;  nuts and threaded collars;  lockbolts;  swaged collars;  solid rivets;  blind bolts;  bushes;  spherical washers. SIST EN 4473:2010



EN 4473:2010 (E) 6 4 Technical specifications 4.1 Product TR 4676 gives the list of aluminium pigmented coating commercial products. Product to be applied shall conform to environmental, work safety and public health European regulations. 4.2 Product composition The preparation method and product composition shall be defined by the manufacturer. The latter must peremptorily notify its users of any change subsequent to qualification. The product shall not contain chemical compounds as listed below : lead, graphite, type II and IV shall not contain hexavalent chromate. 4.3 Product application Product must be applied in accordance with EN 4474. The resin curing temperature must be lower than the last ageing treatment of the material to be coated by at least 10 °C. Product may be applied in several coats but shall only have one curing (polymerization), pre heating (flash-off) is acceptable for each coat. 5 Quality assurance 5.1 Qualification EN 9133 All coating qualification tests shall be done on fasteners and according to Table 1. For fastener qualification only 6.1 to 6.3 apply. 5.2 Acceptance Acceptance is done through fasteners lots for appearance, thickness and adhesion. Sampling 3 per generic part or coating ap
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