EN 2846:2013

Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Fuel and synthetic oil resistant - Hardness 60 IRHD

This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR)  ), fuel and synthetic oil resistant, hardness 60 IRHD, for aerospace applications.

Luft- und Raumfahrt - Acrylnitril-Butadien-Elastomer (NBR) - Beständig gegen Brennstoffe und synthetische Öle - Härte 60 IRHD

Diese Norm legt die Eigenschaften von Acrylnitril-Butadien-Kautschuk (NBR) ), beständig gegen Mineralöle, Härte 60 IRHD, zur Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Élastomère acrylonitrile butadiène (NBR) - Résistant aux carburants et aux huiles synthétiques - Dureté 60 DIDC

La présente Norme européenne spécifie les caractéristiques de l'élastomère acrylonitrile butadiène (NBR), résistant aux carburants et aux huiles synthétiques, dureté 60 DIDC, pour les applications aérospatiales.

Aeronavtika - Akrilonitril-butadien kavčuk (NBR) - Odporen proti gorivom in sintetičnim oljem - Trdota 60 IRHD

General Information

• Status: Published
• Publication Date: 19-Feb-2013
• Withdrawal Date: 30-Aug-2013
• ICS: 49.025.40 - Rubber and plastics
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 5 - Non-Metallic
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Feb-2013
• Completion Date: 20-Feb-2013
• Ref Project: SIST EN 2846:2014 - Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Fuel and synthetic oil resistant - Hardness 60 IRHD

Overview

EN 2846:2013 is a CEN (European) aerospace series standard that specifies the required properties of acrylonitrile‑butadiene rubber (NBR) formulated to be fuel and synthetic oil resistant at a hardness of 60 IRHD. The document defines material characteristics, test methods and acceptance criteria intended for aerospace applications where resistance to petroleum‑based fuels and diester‑based lubricants is critical.

Key topics and technical requirements

• Scope and application
  • Materials covered: NBR (symbol per ISO 1629) resistant to fuels and synthetic oils.
  • Suitability for specific parts must be confirmed by complementary tests on finished components (properties in the standard are from standard test specimens).
• Mechanical and physical properties (examples from the standard)
  • Hardness: 60 IRHD
  • Tensile strength: ≥ 10 MPa
  • Elongation at break: ≥ 350%
  • Low temperature characteristic TR10: ≤ −25 °C
  • Compression set: ≤ 35% after 24 h at 125 °C; ≤ 40% after 70 h at 125 °C
  • Density: batch value must not differ from qualification value by more than 0.02 Mg/m3
  • Corrosion & adhesion on metals: no corrosion and no adhesion after 168 h at 100 °C
• Temperature service range
  • Continuous service: −40 °C to 120 °C
  • Intermittent service: −40 °C to 150 °C
• Testing and acceptance
  • Qualification requires all tests specified in the standard.
  • Batch acceptance requires a subset of tests (identified in the standard).
  • Normative references include EN 3207 (rubber compound technical specification) and ISO 1817 (effect of liquids on rubber).

Applications and users

• Typical components: seals, O‑rings, gaskets, diaphragms and molded parts used in aircraft fuel systems, hydraulic reservoirs or lubrication systems exposed to petroleum fuels and diester‑based lubricants.
• Who uses EN 2846: aerospace materials engineers, OEMs, suppliers of elastomeric seals, procurement/quality teams, test laboratories, and rubber compound formulators who must specify or verify material performance for airframe and engine systems.

Related standards

• EN 3207 - Aerospace series: Rubber compounds - Technical specification
• ISO 1817 - Rubber, vulcanized - Determination of the effect of liquids
• ISO 1629 - Rubber and latices - Nomenclature

EN 2846:2013 provides manufacturers and procurers a clear, standardized basis for specifying NBR materials (60 IRHD) that must resist fuels and synthetic oils in aerospace environments, including defined tests, service temperatures and acceptance criteria. Keywords: EN 2846:2013, NBR, acrylonitrile‑butadiene rubber, fuel resistant, synthetic oil resistant, 60 IRHD, aerospace standard.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Brennstoff und synthetisches Öl resistente acrylonitrile-butadien Elastomere (NBR) - Härte 60 - EigenschaftenCaoutchouc acrylonitrile-butadiène résistant à l'huile synthétique et au combustible (NBR) - Degré de dureté 60 - CaractéristiquesAerospace series - Acrylonitrile-butadiene rubber (NBR) - Fuel and synthetic oil resistant - Hardness 60 IRHD49.025.40Guma in polimerni materialiRubber and plasticsICS:Ta slovenski standard je istoveten z:EN 2846:2013SIST EN 2846:2014en01-februar-2014SIST EN 2846:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2846
February 2013 ICS 49.025.40 English Version
Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Fuel and synthetic oil resistant - Hardness 60 IRHD
Série aérospatiale - Élastomère acrylonitrile butadiène (NBR) - Résistant aux carburants et aux huiles synthétiques - Dureté 60 DIDC
Luft- und Raumfahrt - Acrylinitrilbutadien-Elastomer (NBR) -Beständig gegen Brennstoffe und synthetische Öle - Härte 60 IRHD This European Standard was approved by CEN on 3 November 2012.
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-CENELEC 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-CENELEC 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
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B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2846:2013: ESIST EN 2846:2014
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