SIST EN 4810:2018

• Abstract:

  This standard specifies the characteristics of gasket seal with nickel alloy C seal on heat resisting steel, 3 holes, for pipe couplings for inch series aerospace applications.; Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thickness in the assembly (see EN 4814).; Temperature range: - 55 °C to 600 °C.; NOTE Assembly in accordance with TR 4815.; This part should not be reused after disassembling.

• Status: Published
• Publication Date: 13-Feb-2018
• ICS: 23.040.60 - Flanges, couplings and joints
• ICS: 49.080 - Aerospace fluid systems and components
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-May-2017
• Due Date: 14-Jul-2017
• Completion Date: 14-Feb-2018
• Ref Project: EN 4810:2017 - Aerospace series - Flange couplings - Gasket seal with nickel alloy C seal on heat resisting steel plate with 3 fastening holes - Inch series

Overview

SIST EN 4810:2018 establishes the standard for aerospace flange couplings featuring a gasket seal with a nickel alloy C seal on a heat-resisting steel plate, designed for assemblies using three fastening holes in inch series. This Slovenian adoption of the EN 4810:2017 standard offers vital guidance for ensuring the integrity and performance of flange connections in demanding aerospace fluid systems. The specification covers the requirements for design, materials, dimensions, assembly, and marking, supporting high performance in extreme temperature and pressure conditions often encountered in aerospace applications.

Key Topics

• Design Requirements: The standard defines flange coupling designs with a gasket seal that utilizes a nickel alloy C seal mounted on a heat-resisting steel plate. Configurations include three equally spaced fastening holes, adhering to inch-series dimensions for compatibility across aerospace hardware.
• Materials: The specification references heat-resisting steel sheets or plates (EN 3480 or EN 3488) for the flange and nickel alloy (EN 2407) for the C seal. Both materials are selected for their durability and performance under extreme operational environments.
• Surface Treatment: The heat-resisting steel plates require passivation according to EN 2516, while the nickel alloy C seal should be treated as per ISO 1456, ensuring corrosion resistance and extended service life.
• Assembly and Reuse: The C seal and plate assembly is intended for single use and should not be reused after disassembly. Assemblies are designed to tolerate handling drops from specified heights without separation.
• Marking and Identification: Marking requirements follow EN 2424, category A, ensuring clear, non-embossed identification for traceability and compliance.

Applications

SIST EN 4810:2018 is tailored to aerospace industry needs, specifically for:

• Aerospace Fluid Systems: The standard's flange couplings are used in vital fluid conveyance lines, handling hydraulic, fuel, or cooling fluids under high pressure and temperature conditions (temperature range: -55°C to 600°C, nominal pressure up to 21,000 kPa, subject to assembly factors).
• Aircraft and Spacecraft Construction: Suitable for installation in fixed-wing aircraft, rotary-wing aircraft, satellites, and space vehicles where secure, reliable, and standardized coupling solutions are essential for system safety and efficiency.
• Maintenance and Replacement: By mandating non-reuse, the standard ensures that only fully-certified coupling assemblies are installed following maintenance or component replacement, reducing potential for leakage or failure.

Related Standards

For comprehensive compliance and product lifecycle management, consider the following standards referenced in SIST EN 4810:2018:

• EN 2407: Specifications for nickel alloy plate material used in the seal.
• EN 2424: Marking requirements for aerospace products.
• EN 2516: Passivation processes for corrosion-resistant steels and decontamination of nickel base alloys.
• EN 3480 & EN 3488: Definitions for heat-resisting steel plate and sheet materials.
• EN 4814: Technical specifications for flange couplings up to 21,000 kPa.
• EN 4816: Technical specification for gasket seals with nickel alloy C seals.
• EN 9100: Quality management system requirements for aviation, space, and defense organizations.
• ISO 1456: Metallic and inorganic coating specifications.

By referencing SIST EN 4810:2018 in design and procurement processes, aerospace manufacturers, system integrators, and maintenance organizations can ensure robust, high-performing, and standardized connections across various aerospace platforms, supporting safety, reliability, and regulatory compliance.

SLOVENSKI STANDARD
01-marec-2018
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WRSORWQRRGSRUQLMHNOHQLSORãþLVSULWUGLOQLPLOXNQMDPL3DOþQHPHUH
Aerospace series - Flange couplings - Gasket seal with nickel alloy C seal on heat
resisting steel plate with 3 fastening holes - Inch series
Luft- und Raumfahrt - Rohrverschraubung mit Flanschen - Flachdichtung aus
Nickellegierung, mit Stahlummantelung aus hochwarmfestem Stahl mit 3
Befestigungslöchern - Inch-Reihe
Série aérospatiale - Raccordement à bride - Joint plaque avec joint C en alliage de nickel
sur plaque en acier résistant à chaud avec 3 trous de fixation - Série en inches
Ta slovenski standard je istoveten z: EN 4810:2017
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4810
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2017
EUROPÄISCHE NORM
ICS 49.080
English Version
Aerospace series - Flange couplings - Gasket seal with
nickel alloy C seal on heat resisting steel plate with 3
fastening holes - Inch series
Série aérospatiale - Raccordement à bride - Joint Luft- und Raumfahrt - Rohrverschraubung mit
plaque avec joint C en alliage de nickel sur plaque en Flanschen - Flachdichtung aus Nickellegierung, mit
acier résistant à chaud avec 3 trous de fixation - Série Stahlummantelung aus hochwarmfestem Stahl mit 3
en inches Befestigungslöchern - Inch-Reihe
This European Standard was approved by CEN on 14 November 2016.

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.

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EUROPÄISCHES KOMITEE FÜR NORMUNG

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© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4810:2017 E
worldwide for CEN national Members.

Contents
Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Required characteristics . 5
4 Designation . 7
5 Identification marking . 7
6 Technical specification . 7
7 Quality Assurance. 7

European foreword
This document (EN 4810:2017) has been prepared by the Aerospace and Defence Industries Association of
Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2017, and conflicting national standards shall be withdrawn
at the latest by October 2017.
Attention is drawn to the possibility that some of the elements of this document may be th
...