EN 3867:2004

Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-P64001

This standard specifies the characteristics of flanges for pipe couplings in titanium alloy TI-P64001 for aerospace applications.
NOTE   Assembly in accordance with TR 4053

Luft- und Raumfahrt - Rohrverbindungen mit losen Flanschen und Flanschdichtungen - Flansche aus Titanlegierung TI-P64001

Diese Norm legt die Eigenschaften von Flanschen aus TI-P64001 für Rohrverbindungen für die Luft- und Raumfahrt fest.
ANMERKUNG   Einbau nach TR 4053.

Série aérospatiale - Raccords, brides amovibles et joints - Brides en alliage de titane TI-P64001

Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-P64001

General Information

• Status: Published
• Publication Date: 09-Nov-2004
• Withdrawal Date: 30-May-2005
• 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: 21-Jan-2025
• Completion Date: 11-Feb-2026
• Ref Project: SIST EN 3867:2005 - Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-P64001

Relations

• Replaces: EN 3867:2003 - Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-P64001
• Effective Date: 22-Dec-2008
• Refers: EN 9100:2018 - Quality Management Systems - Requirements for Aviation, Space and Defence Organizations
• Effective Date: 28-Jan-2026
• Refers: EN 1715-1:1997 - Aluminium and aluminium alloys - Drawing stock - Part 1: General requirements and technical conditions for inspection and delivery
• Effective Date: 28-Jan-2026
• Refers: EN 3311:2023 - Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Annealed - Bars for machining - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa
• Effective Date: 28-Jan-2026
• Refers: EN 2424:2008 - Aerospace series - Marking of aerospace products
• Effective Date: 28-Jan-2026
• Refers: EN 3310:2011 - Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Not heat treated - Forging stock, for annealed forgings - De ≤ 360 mm
• Effective Date: 28-Jan-2026

Overview

EN 3867:2004 is a European Standard developed by CEN, focusing on the aerospace industry. The standard specifies the characteristics and requirements for flanges used in pipe couplings, loose flanges, and seals manufactured from titanium alloy TI-P64001. These components are essential in aerospace fluid systems, offering robustness, lightweight properties, and corrosion resistance crucial for aerospace applications. The standard ensures consistency in product quality and compatibility with associated assembly standards, such as TR 4053.

Key Topics

• Material Specification: Defines the use of titanium alloy TI-P64001, notable for its performance in demanding aerospace environments.
• Flange Characteristics: Details precise configuration, dimensions, tolerances, and allowable masses for a wide range of flange sizes. This standardization supports predictable mechanical performance and integration into fluid systems.
• Designation and Marking: Provides rules for the clear identification of flanges by standardized designation codes and marking requirements per EN 2424.
• Quality Assurance: Emphasizes conformance to EN 9100, aligning with recognized aerospace quality management systems based on ISO 9001 principles.
• Reference to Related Procedures: Assembly of these components is performed according to TR 4053, ensuring proper installation and integration in aerospace systems.

Applications

EN 3867:2004 plays a vital role in multiple aerospace fluid and hydraulic systems, where reliable and standardized connections are required. Practical applications include:

• Aircraft Hydraulic and Fuel Systems: Ensures leak-proof and durable connections between pipes, critical for safety and performance.
• Spacecraft Fluid Distribution: Suitable for the demanding environments encountered in space, benefitting from the corrosion resistance and strength-to-weight ratio of titanium alloys.
• Maintenance and Replacement: Provides a consistent basis for the selection and replacement of flanges during aircraft maintenance, ensuring fleet-wide compatibility.
• Component Manufacturing: Guides aerospace manufacturers in producing compliant flange components with standardized characteristics, facilitating cross-supplier compatibility.

Benefits of adhering to EN 3867 include increased safety, reduced risk of component failure, improved maintenance reliability, and streamlined procurement across the aerospace supply chain.

Related Standards

Organizations working with EN 3867:2004 flanges should also be familiar with the following standards and technical reports for comprehensive compliance and system integrity:

• EN 2424: Aerospace series - Marking of aerospace products, for correct product identification.
• EN 3310 / EN 3311: Aerospace series - Material specification for titanium alloy TI-P64001 in forging stock and bar form.
• ISO 286-2: General tolerances and limits and fits for holes and shafts, referenced for dimensional accuracy.
• EN 9100: Aerospace Quality Management Systems, fundamental for production, installation, and servicing.
• TR 4053: Aerospace series - Assembly recommendations for pipe couplings, loose flanges and seals in titanium alloy.

Familiarity with these related standards ensures that organizations can achieve full compliance, quality assurance, and traceability throughout the aerospace component lifecycle.

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Adopting EN 3867:2004 supports standardized, high-performance aerospace fluid systems by mandating precise, quality-assured flanges in titanium alloy TI-P64001, forming a cornerstone of reliable and safe aerospace fluid distribution networks.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2005
1DGRPHãþD
SIST EN 3867:2004
Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium
alloy TI-P64001
Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-
P64001
Luft- und Raumfahrt - Rohrverbindungen mit losen Flanschen und Flanschdichtungen -
Flansche aus Titanlegierung TI-P64001
Série aérospatiale - Raccords, brides amovibles et joints - Brides en alliage de titane TI-
P64001
Ta slovenski standard je istoveten z: EN 3867:2004
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 3867
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.080 Supersedes EN 3867:2003
English version
Aerospace series - Pipe couplings, loose flanges and seals -
Flanges in titanium alloy TI-P64001
Série aérospatiale - Raccords, brides amovibles et joints - Luft- und Raumfahrt - Rohrverbindungen mit losen
Brides en alliage de titane TI-P64001 Flanschen und Flanschdichtungen - Flansche 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 3867:2004: E
worldwide for CEN national Members.

Contents                                                                         Page

Foreword.3
1 Scope .4
2 Normative references .4
3 Required characteristics.4
4 Designation .6
5 Marking .6
6 Quality assurance.6
Foreword
This document (EN 3867:2004) has bee
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