EN 4473:2010

Aerospace series - Aluminium pigmented coatings for fasteners - Technical specification

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  
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.

Luft- und Raumfahrt - Aluminiumpigmentierte Beschichtungen für Verbindungselemente - Technische Lieferbedingungen

Diese Norm legt die Bedingungen für die Qualifizierungsprüfung von aluminiumpigmentierten Beschichtungen
fest, die auf Verbindungselemente aus Titan, Titanlegierungen, Nickelbasislegierungen und korrosionsbeständigen
Stählen aufgetragen werden können. Die aluminiumpigmentierten Beschichtungen sind bei
Verbindungselementen aus nicht korrosionsbeständigen Stählen nicht anwendbar.
Temperaturklasse: 315 °C1)
Typ I: Beschichtung mit Chrom (VI) und einem Cetylalkohol-Schmiermittel
Typ II: Beschichtung ohne Chrom (VI) und mit einem Cetylalkohol-Schmiermittel
Typ III: Beschichtung mit Chrom (VI), kein zusätzliches Schmiermittel
Typ IV: Beschichtung ohne Chrom (VI), kein zusätzliches Schmiermittel

Série aérospatiale - Revêtements alumino-organiques pour fixations - Spécification technique

Aeronavtika - Premazi, pigmentirani z aluminijem, za vezne elemente - Tehnična specifikacija

Ta evropski standard določa pogoje kvalifikacijskega preskusa za premaze, pigmentirane z aluminijem, ki se nanašajo na vezne elemente iz titana, titanovih zlitin, zlitin na osnovi niklja in jekel, odpornih proti koroziji. Premazi, pigmentirani z aluminijem, se ne uporabljajo za vezne elemente iz jekel, ki niso odporna proti koroziji. Temperaturni razred: 315 °C. Tip I: Premaz s kromatom in cetil-alkoholnim mazivom. Tip II: Premaz brez kromata in cetil-alkoholnega maziva. Tip III: Premaz s kromatom, brez dodatnega maziva. Tip IV: Premaz brez kromata, brez dodatnega maziva.

General Information

• Status: Published
• Publication Date: 31-Aug-2010
• Withdrawal Date: 30-Mar-2011
• ICS: 49.040 - Coatings and related processes used in aerospace industry
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3/WG 6 - Coatings for fasteners
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Sep-2010
• Completion Date: 01-Sep-2010
• Ref Project: SIST EN 4473:2010 - Aerospace series - Aluminium pigmented coatings for fasteners - Technical specification

Relations

• Revised: EN 4473:2024 - Aerospace series - Aluminium pigmented organic coatings for fasteners - Technical specification
• Effective Date: 20-Feb-2023

Standards Content (Sample)

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
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

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

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

the coating must be cut through to the base material on the largest plain surface of the part. Press the tape firmly to the cut on the plain surface of the fastener and remove the tape in one abrupt motion perpendicular to the fastener surface. Any evidence of coating separation when examined at approximately 4X is cause for rejection. 5 per generic part, material type or coating application
process 6.4 Heat resistance The coating must remain continuously bonded to the basis material. No powder shall be detected by visual inspection. Class 0 Expose the coated test part to 315 °C for 4 h. Air cool and carry out the adhesion test (see 6.3). ISO 2409. 4 screws continued SIST EN 4473:2010

Method 1 = Full immersion 1 000 h at 70 °C min in Kerosene or equivalent containing 0,2 % methyl cellosolve;  Hydraulic fluid:
Method 1 = Full immersion 1 000 h at 70 °C min in phosphate ester hydraulic fluid type IV A. Adhesion test as per ISO 2409 6.6 Resistance to stripper agents and to solvents The coating shall no show evidence of blistering or loss of adhesion. Class 0 Immersion of the coated test pieces: 24 h at room temperature in three products: 2 screws  benzylic alcohol and dimer acid;  diestone. Adhesion test as per ISO 2409 6.7 Embrittlement 72 h at a tensile load of 80 % of minimum specified UTS, fasteners shall withstand the imposed loading conditions without any breaking or craking. NASM 1312-5 4 screws per material type identified as sensitive 6.8 Galvan
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