EN 2786:2008
(Main)Aerospace series - Electrolytic silver plating of fasteners
Aerospace series - Electrolytic silver plating of fasteners
This standard specifies the electrolytic silver plating of fasteners used in aerospace applications.
It shall apply whenever referenced.
Luft- und Raumfahrt - Elektrolytisches Versilbern von Verbindungselementen
Diese Norm legt das elektrolytische Versilbern von Verbindungselementen für die Luft- und Raumfahrt fest.
Sie muss immer angewendet werden, wenn auf sie verwiesen wird.
Série aérospatiale - Argentage électrolytique des éléments de fixation
Aeronavtika - Elektrolitska posrebritev veznih elementov
General Information
- Status
- Published
- Publication Date
- 25-Mar-2008
- Withdrawal Date
- 29-Sep-2008
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2024
- Completion Date
- 14-May-2025
Overview
EN 2786:2008 - Aerospace series - Electrolytic silver plating of fasteners (CEN) defines the requirements for electrolytic silver plating of fasteners used in aerospace applications. The standard’s primary purpose is to prevent galling or seizure of mating parts by specifying preparation, plating procedure, post‑treatments and inspection criteria. EN 2786:2008 applies whenever it is referenced on product drawings or procurement documents.
Key topics and technical requirements
- Purpose: Prevent galling/seizure of aerospace fasteners through controlled silver plating.
- Surface preparation: Clean chemically/electrolytically with minimal abrasion, erosion or pitting. Avoid treatments that may produce hydrogen embrittlement. Optional etching (e.g., ferric chloride / hydrochloric acid) may be used to promote adhesion.
- Plating process: Silver shall be deposited electrolytically over a suitable nickel and/or silver strike by an approved method. Plating thickness is specified in the relevant product standard or definition document. After plating, parts must be thoroughly rinsed and dried.
- Composition: Plated silver shall be not less than 99.9% pure; process control must ensure this purity.
- Appearance: Plate must be sound, smooth, uniform in colour and free from blisters and major imperfections. Minor abrasion on corners/threads and marking from locking features is acceptable; plating must remain continuous on threads.
- Post‑treatment / de‑embrittlement: Mandatory for martensitic steels with tensile strength > 1 100 MPa. De‑embrittlement must be performed as soon as possible, and no later than 16 hours after plating. Verification can be by EN 2831 / EN 2832 tests or a 200 h axial‑load dwell test (75% of tensile strength) with no fracture before 200 h.
- Adhesion testing: Heat parts in air to the applicable maximum test temperature (±8 °C) for ≥2 hours, cool in still air, then visually examine at 10× magnification. Blisters ≥0.38 mm are unacceptable. Follow with an adhesion test (EN 2828, EN 2830 or agreed method).
- Inspection classification: Acceptance tests per lot - appearance, thickness and adhesion. Periodic tests - composition and post‑treatments. A lot is defined by size/shape/alloy/thickness/solution batch within 24 hours.
- Quality assurance: Conformity with aerospace quality systems (see EN 9100).
Applications and who uses it
EN 2786 is used by:
- Aerospace fastener manufacturers and plating subcontractors
- OEMs, maintenance organizations and supply chain quality managers
- Procurement engineers specifying plating on drawings and purchase orders
- Metallurgists and process engineers controlling plating baths and hydrogen embrittlement mitigation
Practical applications include plating bolts, nuts, rivets and other fastening hardware where electrolytic silver plating is required to improve wear behaviour, reduce galling and ensure reliable mechanical performance in aerospace assemblies.
Related standards
- EN 2828 - Adhesion test by burnishing
- EN 2830 - Adhesion test by shearing action
- EN 2831 / EN 2832 - Hydrogen embrittlement tests (slow bending / notched specimen)
- EN 9100 - Aerospace quality management systems
Keywords: EN 2786:2008, electrolytic silver plating, aerospace fasteners, silver plating standard, hydrogen embrittlement, de‑embrittlement, adhesion testing, quality assurance.
Frequently Asked Questions
EN 2786:2008 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Electrolytic silver plating of fasteners". This standard covers: This standard specifies the electrolytic silver plating of fasteners used in aerospace applications. It shall apply whenever referenced.
This standard specifies the electrolytic silver plating of fasteners used in aerospace applications. It shall apply whenever referenced.
EN 2786:2008 is classified under the following ICS (International Classification for Standards) categories: 49.030.01 - Fasteners in general. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 2786:2008 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Electrolytic silver plating of fastenersAeronavtika - Elektrolitska posrebritev veznih elementovSérie aérospatiale - Argentage électrolytique des éléments de fixationLuft- und Raumfahrt - Elektrolytisches Versilbern von VerbindungselementenTa slovenski standard je istoveten z:EN 2786:2008SIST EN 2786:2008en49.030.01ICS:SLOVENSKI
STANDARDSIST EN 2786:200801-junij-2008
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2786March 2008ICS 49.030.01 English VersionAerospace series - Electrolytic silver plating of fastenersSérie aérospatiale - Argentage électrolytique des élémentsde fixationLuft- und Raumfahrt - Elektrolytisches Versilbern vonVerbindungselementenThis European Standard was approved by CEN on 12 December 2007.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 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2786:2008: E
...
Die Norm EN 2786:2008 legt die Anforderungen für die elektrolytische Silberbeschichtung von Befestigungselementen fest, die in der Luft- und Raumfahrt eingesetzt werden. Der Anwendungsbereich dieser Norm ist klar definiert und bespricht umfassend die spezifischen Anforderungen an die Oberflächenbehandlung, die für die Gewährleistung der Sicherheit und Leistungsfähigkeit von Bauteilen in der Luftfahrtindustrie entscheidend sind. Ein wesentlicher Stärke dieser Norm ist ihre Fokussierung auf elektrolytische Verfahren, die eine gleichmäßige und hochwertige Silberbeschichtung ermöglichen. Dies ist von großer Bedeutung, da die Effektivität dieser Beschichtung direkt die Korrosionsbeständigkeit und die thermischen Eigenschaften der Befestigungselemente beeinflusst, die in extremen Bedingungen eingesetzt werden. Die Norm bietet somit einen robusten Rahmen für die Qualitätskontrolle und Prüfung dieser Komponenten. Die Relevanz der EN 2786:2008 wird auch durch ihre Verwendung in der Luft- und Raumfahrtindustrie unterstrichen, wo Sicherheit und Zuverlässigkeit oberste Priorität haben. Die Einhaltung dieser Norm unterstützt Hersteller dabei, Komponenten zu produzieren, die den strengen Anforderungen des Marktes gerecht werden. Durch die klare Definition der Verfahren und Kriterien ermöglicht die Norm eine sicherheitsgerechte Anwendung und die Minimierung von Risiken. Zusammenfassend lässt sich sagen, dass die EN 2786:2008 eine wesentliche Norm darstellt, die nicht nur die technischen Anforderungen präzise festlegt, sondern auch als Grundlage für Best Practices in der elektrolytischen Silberbeschichtung von Befestigungen dient. Ihr sorgfältig ausgearbeiteter Inhalt stellt sicher, dass alle Beteiligten in der Luftfahrtindustrie auf zuverlässige und konsistente Prozesse zugreifen können.
EN 2786:2008は、航空宇宙分野におけるナット、ボルト、その他のファスナーに使用される電解銀メッキの標準化文書です。この標準は、ファスナーの腐食耐性を向上させ、航空機の安全性と信頼性を確保するための重要なガイドラインを提供しています。 この標準の範囲は、航空宇宙産業に特有のニーズに応えることを目的としており、電解銀メッキのプロセスや品質管理の要件を詳述しています。これにより、製品が高い性能基準を満たすための基盤が整えられています。特に、飛行機の部品として使用されるファスナーが極めて厳しい環境にさらされるため、こうした高品質のメッキプロセスを定めることは、信頼性を維持する上で不可欠です。 EN 2786:2008の強みは、明確で実用的な指針を提供している点です。電解銀メッキの要件が具体的に記載されており、製造業者や品質管理担当者が容易に遵守できるようになっています。この焦点を定めたアプローチは、航空宇宙産業で働く専門家にとって、技術的な理解を深め、安全性を保証するのに役立ちます。 さらに、EN 2786:2008は、航空宇宙用途における信頼性とパフォーマンスを維持するだけでなく、国際的な規格との整合性も考慮されています。この標準の採用は、企業が市場の競争力を維持し、新しい技術や材料に適応する際の助けとなるでしょう。 そのため、EN 2786:2008は、航空宇宙ファスナーの安全性と効果を確保するための重要な標準であり、多くの関連の場面で使用されることが期待されます。標準の普及は、業界全体の技術向上にも寄与すると考えられます。
The EN 2786:2008 standard focuses on the electrolytic silver plating of fasteners specifically designed for aerospace applications. This standard serves an essential role in ensuring that fasteners used in the aerospace industry meet rigorous safety and performance requirements. One of the key strengths of EN 2786:2008 is its detailed specifications on the electrolytic silver plating process. By providing precise guidelines, it helps manufacturers maintain consistent quality in the plating thickness and integrity of the fasteners. This uniformity is critical in aerospace applications, where the reliability of components can significantly impact overall safety and functionality. The document emphasizes not only the technical processes involved but also the importance of adherence to quality control measures throughout the electrolytic plating procedure. The stringent requirements set forth in this standard help mitigate risks associated with the use of uncontrollable or inferior plating methods, making it a critical reference for organizations striving for excellence in aerospace component manufacturing. Furthermore, the relevance of EN 2786:2008 extends beyond compliance; it fosters innovation by prompting manufacturers to explore advances in plating technology while adhering to established safety standards. This aspect of the standard encourages continuous improvement within the sector, aligning with the industry's goal of achieving the highest standards in aerospace performance and safety. Overall, EN 2786:2008 stands as a foundational document in the aerospace industry, ensuring that the electrolytic silver plating of fasteners is executed with the utmost precision and reliability. Its implications touch on safety, performance, and innovation, solidifying its importance in the aerospace series.
La norme EN 2786:2008, intitulée "Aerospace series - Electrolytic silver plating of fasteners", est un document essentiel dans le domaine de l'aéronautique. Son objectif principal est de spécifier les exigences concernant le plaquage en argent électrolytique des éléments de fixation utilisés dans diverses applications aéronautiques. L'un des points forts de cette norme réside dans sa portée bien définie, qui s'applique chaque fois qu'elle est référencée. Cela garantit une uniformité dans les processus de fabrication et d'inspection des fixations, essentielles pour la sécurité et la performance des aéronefs. Ce plaquage en argent est particulièrement pertinent dans l'industrie aéronautique, où les exigences de résistance à la corrosion et de conductivité électrique sont primordiales. En outre, la norme EN 2786:2008 contribue à renforcer la fiabilité des composants aérospatiaux. En spécifiant les méthodes d'application et les critères de qualité du plaquage, elle permet d'assurer que les fixations répondent aux normes élevées de performance requises dans ce secteur. Cela est particulièrement important dans un environnement où la qualité et la sécurité ne peuvent être compromises. Enfin, la pertinence de cette norme ne peut être sous-estimée, car elle répond aux impératifs technologiques et réglementaires en constante évolution de l'industrie aéronautique. En standardisant le processus de plaquage en argent des fixations, elle facilite également l'harmonisation entre les fabricants, ce qui est crucial pour l'intégration des différents composants aéronautiques.
SIST EN 2786:2008 표준은 항공 우주 애플리케이션에서 사용되는 패스너의 전해 은 도금에 대한 요구사항을 규정합니다. 이 표준은 항공기 및 우주선의 안전성과 내구성을 보장하기 위해 필수적인 적용 범위를 포함하고 있습니다. EN 2786:2008의 강점 중 하나는 전해 은 도금의 일관성을 보장하는 구체적인 기준을 제공한다는 점입니다. 이는 패스너의 부식 저항성을 극대화하고 성능의 직결적인 영향을 미치므로 aerospace 산업의 권장사항으로 매우 중요합니다. 또한, 이 표준은 품질 관리 시스템에 통합할 수 있어 제조 과정에서 발생할 수 있는 변동성을 최소화합니다. 또한 이 표준은 최종 제품의 신뢰성을 높이는 데 기여합니다. 항공 우주 산업에서는 각 부품의 신뢰성이 비행 안전에 직접적인 영향을 미치기 때문에, EN 2786:2008의 준수는 필수적입니다. 전해 은 도금은 패스너의 전기적 연결성을 향상시키고, 기계적 성질을 강화하여 전반적인 제품 품질을 향상시킵니다. 결론적으로, SIST EN 2786:2008 표준은 항공 우주 분야에서 패스너의 전해 은 도금을 규정함으로써, 안전성 및 품질 관리를 보장하는데 기여하는 중요한 문서입니다. 이 표준은 현대 항공 우주 기술의 요구에 부합하는 필수적이고 효과적인 가이드라인을 제공합니다.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...