EN 4729:2017

Aerospace series - Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys

This European Standard specifies trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys. It covers the application by bath but also by touch-up. It doesn’t give complete in house process instructions; these shall be given in the manufacturers detailed process instructions.

Luft- und Raumfahrt - Chrom-(III)-basierte chemische Konversionsüberzüge für Aluminium und Aluminiumlegierungen

Série aérospatiale - Conversion chimique au chrome trivalent de l’aluminium et des alliages d’aluminium

Aeronavtika - Kemične prevleke za aluminij in aluminijeve zlitine na osnovi trivalentnega kroma

Ta evropski standard določa kemične prevleke na osnovi trivalentnega kroma za aluminij in aluminijeve zlitine. Zajema nanos s kopeljo in nanos z dotikom. Ne podaja popolnih navodil glede internega postopka, ki bodo podana v podrobnih navodilih proizvajalcev glede postopka.

General Information

• Status: Published
• Publication Date: 05-Sep-2017
• Withdrawal Date: 30-Mar-2018
• ICS: 25.220.99 - Other treatments and coatings
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4/S 6 - Surface treatments for Metallic
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 06-Sep-2017
• Completion Date: 06-Sep-2017
• Ref Project: SIST EN 4729:2017 - Aerospace series - Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Chrom-(III)-basierte chemische Konversionsüberzüge für Aluminium und AluminiumlegierungenSérie aérospatiale - Conversion chimique au chrome trivalent de l’aluminium et des alliages d’aluminiumAerospace series - Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys49.025.20AluminijAluminium25.220.99Druge obdelave in prevlekeOther treatments and coatingsICS:Ta slovenski standard je istoveten z:EN 4729:2017SIST EN 4729:2017en,fr,de01-november-2017SIST EN 4729:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4729
September
t r s y ICS
t wä t t rä { { English Version
Aerospace series æ Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloysSérie aérospatiale æ Conversion chimique au chrome trivalent de l 5aluminium et des alliages d 5aluminium Konversionsüberzüge für Aluminium und Aluminiumlegierungen This European Standard was approved by CEN on
s v May
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
v y t {ã t r s y ESIST EN 4729:2017

EN 4707, Aerospace series — Acid pickling of aluminum and aluminum alloy without hexavalent chromium 1) EN 9100, Quality Management Systems — Requirements for Aviation, Space and Defence Organizations EN ISO 2409, Paints and varnishes — Cross-cut test EN ISO 2812-2, Paints and varnishes — Determination of resistance to liquids — Part 2: Water immersion method EN ISO 3892, Conversion coatings on metallic materials — Determination of coating mass per unit area — Gravimetric methods EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 batch unless otherwise specified, it comprises parts of the same type (shape, size, material), processed at the same time in the same bath 4.2 substrate material upon which a coating is directly applied, in the case of a single or first coating, the substrate is the basis metal and for a subsequent coating, the intermediate coating is the substrate
1) Published as ASD-STAN Prestandard at the date of publication of this standard by AeroSpace and Defence industries Association of Europe - Standardization (ASD-STAN) (www.asd-stan.org) SIST EN 4729:2017
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