Aerospace series - Rings, split, in stainless steel

This standard specifies the characteristics of split rings, for use in aerospace applications.

Luft- und Raumfahrt - Sprengringe, aus nichtrostendem Stahl

Diese Norm legt die Anforderungen an Schlüsselringe für die Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Anneaux ressorts, en acier inoxydable

Aeronavtika - Vzmetne podložke iz visokokakovostnega jekla

General Information

Status
Published
Publication Date
19-Apr-2009
ICS
49.030.50 - Washers and other locking elements
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Apr-2009
Due Date
08-Jun-2009
Completion Date
20-Apr-2009
Ref Project
EN 4494:2006 - Aerospace series - Rings, split, in stainless steel

Overview

SIST EN 4494:2009 is a European standard published by CEN that specifies the characteristics of stainless steel split rings intended for aerospace applications. These precision-engineered split rings, also known as spring rings, are critical components used primarily as locking elements in the aerospace industry to ensure the secure assembly of mechanical parts.

This standard ensures that split rings conform to strict requirements regarding dimensions, material quality, surface finish, and marking, which are crucial factors for safety and reliability in aerospace manufacturing. By adhering to SIST EN 4494:2009, aerospace manufacturers can guarantee compatibility, performance, and compliance with industry norms.

Key Topics

  • Scope: Defines characteristics and requirements for stainless steel split rings used in aerospace.
  • Material: Rings are made from annealed steel conforming to EN 2541, a high-quality wire spring steel.
  • Dimensions and Tolerances: Detailed specification of ring dimensions, including diameter codes, cross-section, and mass values. The tolerances are defined in millimeters and apply after surface treatment.
  • Surface Treatment: Rings must have a bright polished surface to ensure corrosion resistance and optimal mechanical performance.
  • Marking: Rings are marked following EN 2424 (style G) for traceability and quality assurance.
  • Quality Assurance: Compliance with EN 9100, which outlines quality management systems specifically for aerospace, ensures consistent production standards.
  • Designation System: A clear coding method is used to designate split rings by standard number and diameter code, facilitating easy identification.

Applications

SIST EN 4494:2009 split rings are widely used in the aerospace sector where reliable locking mechanisms are essential. Key applications include:

  • Locking washers and fasteners in aircraft engines and airframe assemblies.
  • Securing components subjected to vibration, thermal cycling, and mechanical stress.
  • Critical aerospace equipment where failure or loosening of parts could lead to safety risks.
  • Aerospace manufacturing processes that require standardized and interchangeable parts.

By using split rings standardized under SIST EN 4494:2009, aerospace companies ensure the safety and integrity of mechanical connections in aviation and space systems.

Related Standards

  • EN 2541: Defines the type of stainless steel spring wire used for producing split rings.
  • EN 2424: Covers the marking requirements for aerospace products ensuring product traceability.
  • EN 9100: Aerospace series quality management system standard, critical for ensuring consistent production and quality control.
  • ISO 9001: Underpins the quality assurance processes referenced by EN 9100 and SIST EN 4494:2009.

Using EN 4494 in conjunction with these related standards ensures a comprehensive approach to quality, performance, and safety in aerospace components manufacturing.

Keywords: EN 4494, aerospace standard, split rings, stainless steel rings, aerospace locking elements, aerospace manufacturing, quality assurance, split spring rings, EN 2424 marking, EN 2541 steel wire, EN 9100 quality management

Frequently Asked Questions

SIST EN 4494:2009 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Rings, split, in stainless steel". This standard covers: This standard specifies the characteristics of split rings, for use in aerospace applications.

This standard specifies the characteristics of split rings, for use in aerospace applications.

SIST EN 4494:2009 is classified under the following ICS (International Classification for Standards) categories: 49.030.50 - Washers and other locking elements. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 4494:2009 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Vzmetne podložke iz visokokakovostnega jeklaLuft- und Raumfahrt - Sprengringe, aus nichtrostendem StahlSérie aérospatiale - Anneaux ressorts, en acier inoxydableAerospace series - Rings, split, in stainless steel49.030.50Podložke in drugi blokirni elementiWashers and other locking elementsICS:Ta slovenski standard je istoveten z:EN 4494:2006SIST EN 4494:2009en,de01-junij-2009SIST EN 4494:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4494June 2006ICS 49.030.50 English VersionAerospace series - Rings, split, in stainless steelSérie aérospatiale - Anneaux ressorts, en acier inoxydableLuft- und Raumfahrt - Sprengringe, aus rostfreier StahlThis European Standard was approved by CEN on 6 February 2006.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4494:2006: ESIST EN 4494:2009

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