SIST EN 3868:2005
(Main)Aerospace series - Pipe couplings, loose flanges and seals - Flange connectors, welded, in titanium alloy TI-P64001
Aerospace series - Pipe couplings, loose flanges and seals - Flange connectors, welded, in titanium alloy TI-P64001
This standard specifies the characteristics of welded flanged connectors in titanium alloy TI-P64001 for aerospace applications.
NOTE: Assembly in accordance with TR 4053
Luft- und Raumfahrt - Rohrverbindungen mit losen Flanschen und Flanschdichtungen - Schweißstutzen aus Titanlegierung TI-P64001
Diese Norm legt die Eigenschaften von Schweißstutzen aus TI-P64001 für Rohrverbindungen für die Luft- und Raumfahrt fest.
ANMERKUNG Einbau nach TR 4053.
Série aérospatiale - Raccords, brides amovibles et joints - Raccords a souder en alliage de titane TI-P64001
Aerospace series - Pipe couplings, loose flanges and seals - Flange connectors, welded, in titanium alloy TI-P64001
General Information
Relations
Overview
SIST EN 3868:2005 is a European aerospace standard specifying the characteristics of welded flange connectors made from titanium alloy TI-P64001. Developed and approved by the European Committee for Standardization (CEN) and the European Association of Aerospace Manufacturers (AECMA-STAN), this standard provides essential criteria for pipe couplings, loose flanges, and seals utilized in aerospace fluid systems. The document ensures consistent quality, design, and manufacturing requirements for welded flange connectors in titanium alloy, critical for high-performance aerospace applications.
The standard applies to welded flanged connectors manufactured from titanium alloy TI-P64001, widely valued in aerospace for its strength-to-weight ratio, corrosion resistance, and compatibility with other aerospace components. Assembly practices must follow the technical recommendations outlined in TR 4053.
Key Topics
- Material Specification: The connectors must use titanium alloy TI-P64001 as defined in EN 3310 or EN 3311, covering not heat-treated or annealed forging stock.
- Dimensions and Tolerances: Detailed dimensional codes and tolerances are provided, in accordance with ISO 286-2, to guarantee precise fits and functional assembly within aerospace fluid systems. Dimensions are expressed in millimeters and include mass approximations per 1,000 parts.
- Design and Configuration: The standard specifies configuration details such as radii for edges, marking locations, and dimensional constraints to ensure optimal performance.
- Marking and Identification: Marking must comply with EN 2424 category A, ensuring traceability and conformity of each flange connector.
- Quality Assurance: Manufacturing must adhere to the aerospace quality management system requirements outlined in EN 9100, ensuring rigorous standards in production, inspection, and testing.
- Assembly Instructions: Assembly must follow the recommendations in TR 4053 for pipe couplings and seals in titanium alloy to maintain system integrity and safety.
Applications
SIST EN 3868:2005 flange connectors are primarily used within aerospace fluid systems, including:
- Hydraulic and fuel lines in aircraft and aerospace vehicles requiring lightweight, corrosion-resistant, and durable pipe coupling solutions.
- High-performance fluid transfer systems where titanium’s mechanical properties contribute to safety and efficiency.
- Systems requiring stringent quality and traceability to meet international aerospace manufacturing standards.
- Environments involving extreme temperatures and pressures, benefiting from titanium’s stability and strength.
These connectors enable reliable welded joints and flange assemblies critical to aerospace engineering safety, performance, and maintenance standards.
Related Standards
Important related standards for comprehensive application include:
- EN 3310 & EN 3311: Specifications for titanium alloy TI-P64001 raw material and bar stock.
- EN 2424: Marking requirements for aerospace products, ensuring product traceability.
- EN 9100: Aerospace quality management system requirements aligned with ISO 9001, ensuring production and design quality.
- TR 4053: Technical assembly recommendations for pipe couplings and seals in titanium alloy, complementing EN 3868 for proper installation.
Together, these standards support aerospace manufacturers in maintaining high-quality, precise, and compliant titanium alloy connectors designed for critical aerospace fluid systems.
Keywords: EN 3868, titanium alloy TI-P64001, aerospace flange connectors, pipe couplings, welded flange connectors, aerospace fluid systems, titanium pipe fittings, aerospace standards, EN 3310, EN 3311, EN 9100, TR 4053, aerospace quality assurance
Frequently Asked Questions
SIST EN 3868:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe couplings, loose flanges and seals - Flange connectors, welded, in titanium alloy TI-P64001". This standard covers: This standard specifies the characteristics of welded flanged connectors in titanium alloy TI-P64001 for aerospace applications. NOTE: Assembly in accordance with TR 4053
This standard specifies the characteristics of welded flanged connectors in titanium alloy TI-P64001 for aerospace applications. NOTE: Assembly in accordance with TR 4053
SIST EN 3868:2005 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.
SIST EN 3868:2005 has the following relationships with other standards: It is inter standard links to SIST EN 3868:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 3868:2005 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 SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2005
1DGRPHãþD
SIST EN 3868:2004
Aerospace series - Pipe couplings, loose flanges and seals - Flange connectors,
welded, in titanium alloy TI-P64001
Aerospace series - Pipe couplings, loose flanges and seals - Flange connectors, welded,
in titanium alloy TI-P64001
Luft- und Raumfahrt - Rohrverbindungen mit losen Flanschen und Flanschdichtungen -
Schweißstutzen aus Titanlegierung TI-P64001
Série aérospatiale - Raccords, brides amovibles et joints - Raccords a souder en alliage
de titane TI-P64001
Ta slovenski standard je istoveten z: EN 3868:2004
ICS:
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 3868
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.080 Supersedes EN 3868:2003
English version
Aerospace series - Pipe couplings, loose flanges and seals -
Flange connectors, welded, in titanium alloy TI-P64001
Série aérospatiale - Raccords, brides amovibles et joints - Luft- und Raumfahrt - Rohrverbindungen mit losen
Raccords à souder en alliage de titane TI-P64001 Flanschen und Flachdichtungen - Schweißstutzen aus
Titanlegierung TI-P64001
This European Standard was approved by CEN on 11 September 2003.
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 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 translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3868:2004: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Required characteristics.4
4 Designation .7
5 Marking .7
6 Quality assurance.7
Foreword
This document (EN 3868:2004) has been prepared by the European Association of Aerospace
Manufacturers - Standardization (AECMA-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
AEC
...
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