Aerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressure

This standard specifies the characteristics for T-ring fillers in titanium alloy for welding pipes, for aerospace applications.
Nominal pressure: up to 28 000 kPa

Luft- und Raumfahrt - T-Schweißringe aus Titanlegierung - 28 000 kPa Nenndruck

Série aérospatiale - Rondelles en T à souder en alliage de titane - Pression nominale 28 000 kPa

Aerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressure

General Information

Status
Published
Publication Date
23-Oct-2001
Withdrawal Date
29-Apr-2002
ICS
49.080 - Aerospace fluid systems and components
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 3 - Mechanical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
31-May-2017
Completion Date
14-Apr-2025
Ref Project
SIST EN 3689:2004 - Aerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressure

Relations

Corrected By
EN 3689:2001/AC:2003 - Aerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressure
Effective Date
22-Dec-2008

Overview

EN 3689:2001 defines the characteristics of T‑ring fillers in titanium alloy used for welding aerospace pipes rated to a nominal pressure up to 28 000 kPa (28 MPa). Prepared under the AECMA (now ASD) framework and published by CEN, the standard establishes configuration, dimensional, material and marking requirements specific to high‑pressure aerospace fluid systems.

Key topics and requirements

  • Scope and pressure rating
    • Applies to T‑ring fillers for welding pipes in aerospace applications with nominal pressure up to 28 000 kPa.
  • Configuration, dimensions and mass
    • Geometric configuration is defined by a reference drawing (figure 1) and a dimensional code table (table 1) that lists sizes and masses for different pipe nominal outside diameters and wall thicknesses.
  • Surface finish
    • Surface roughness requirements follow the reference figure unless alternative values are specified in design documentation.
  • Materials
    • T‑ring fillers are made from titanium alloy TI‑P64001, in forms specified by related standards:
      • Annealed bar (see EN 3311)
      • Solution treated and aged bar (see EN 3314)
  • Marking
    • Marking requirements conform to EN 2424 (aerospace product marking), including the prescribed style and identity blocks for traceability.
  • Normative references
    • The standard incorporates provisions from related aerospace standards such as EN 2424, EN 2656 (pipe coupling geometry), EN 3311, and EN 3314.

Applications

  • Use EN 3689 to specify, procure and verify T‑ring filler components for welding titanium pipes in:
    • Aircraft hydraulic and fuel systems
    • High‑pressure aerospace fluid lines and assemblies
    • Repair and overhaul operations where component interchangeability and traceability are required
  • Relevant across design, manufacturing and quality control processes where high‑strength, corrosion‑resistant titanium weld fillers are required.

Who uses this standard

  • Aerospace component manufacturers and suppliers of titanium welding consumables
  • Design and stress engineers specifying pipe and coupling assemblies
  • Quality, procurement and certification teams ensuring compliance with European aerospace standards
  • Maintenance, repair and overhaul (MRO) organizations performing welded pipe repairs

Related standards

  • EN 2424 - Marking of aerospace products
  • EN 2656 - Pipe coupling - coupled end geometry for welded connections
  • EN 3311 / EN 3314 - Titanium alloy TI‑P64001 material forms and conditions

EN 3689:2001 helps ensure consistent dimensions, material quality and traceability for T‑ring fillers used in high‑pressure aerospace piping, supporting safe, repeatable welding and long‑term system reliability.

Frequently Asked Questions

EN 3689:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressure". This standard covers: This standard specifies the characteristics for T-ring fillers in titanium alloy for welding pipes, for aerospace applications. Nominal pressure: up to 28 000 kPa

This standard specifies the characteristics for T-ring fillers in titanium alloy for welding pipes, for aerospace applications. Nominal pressure: up to 28 000 kPa

EN 3689:2001 is classified under the following ICS (International Classification for Standards) categories: 49.080 - Aerospace fluid systems and components. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 3689:2001 has the following relationships with other standards: It is inter standard links to EN 3689:2001/AC:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 3689:2001 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.Aerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressureLuft- und Raumfahrt - T-Schweißringe aus Titanlegierung - 28 000 kPa NenndruckSérie aérospatiale - Rondelles en T a souder en alliage de titane - Pression nominale 28 000 kPaAerospace series - T-ring fillers in titanium alloy for welding pipes - 28 000 kPa nominal pressure49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 3689:2001SIST EN 3689:2004en01-maj-2004SIST EN 3689:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3689October 2001ICS 49.080English versionAerospace series - T-ring fillers in titanium alloy for weldingpipes - 28 000 kPa nominal pressureSérie aérospatiale - Rondelles en T à souder en alliage detitane - Pression nominale 28 000 kPaLuft- und Raumfahrt - T-Schweißringe aus Titanlegierung -28 000 kPa NenndruckThis European Standard was approved by CEN on 20 January 2001.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3689:2001 ESIST EN 3689:2004
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