SIST EN 3867:2005

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: 31-May-2005
• ICS: 49.080 - Aerospace fluid systems and components
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jun-2005
• Due Date: 01-Jun-2005
• Completion Date: 01-Jun-2005
• Ref Project: EN 3867:2004 - Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-P64001

Relations

• Replaces: SIST EN 3867:2004 - Aerospace series - Pipe couplings, loose flanges and seals - Flanges in titanium alloy TI-P64001
• Effective Date: 01-Jun-2005

Overview

SIST EN 3867:2005 is a European standard developed by CEN for aerospace applications, specifying the characteristics of flanges made from titanium alloy TI-P64001 used in pipe couplings, loose flanges, and seals. This standard ensures consistency, reliability, and safety in aerospace fluid systems by defining precise requirements for dimensions, materials, marking, and quality assurance of these critical components. Assembly should be performed according to TR 4053 recommendations.

Key Topics

• Material Specification
  Flanges must be manufactured from titanium alloy TI-P64001, compliant with EN 3310 (not heat-treated forging stock) or EN 3311 (annealed bar for machining). This alloy is chosen for its high strength-to-weight ratio and corrosion resistance, essential in aerospace fluid systems.

• Dimensional Tolerances and Configuration
  The standard provides detailed dimensions and tolerances expressed in millimeters, including flange diameter, bore, hole spacing, and surface finish requirements. Typical tolerances follow ISO 286-2 for limits and fits, ensuring compatibility with pipe couplings.

• Marking Requirements
  Markings on flanges must comply with EN 2424 category A to guarantee traceability and identification, including the standard number and specific flange codes.

• Quality Assurance
  Quality management systems must conform to EN 9100 standards, ensuring high reliability through rigorous design, production, installation, and servicing procedures.

Applications

SIST EN 3867:2005 flanges are specifically designed for aerospace industry fluid systems where weight, strength, and corrosion resistance are critical:

• Aerospace Fluid Systems: Use in air, fuel, hydraulic, and cooling piping systems across aircraft and spacecraft.
• Pipe Couplings and Loose Flanges: Used in modular piping systems requiring maintenance or assembly flexibility.
• High-Performance Aerospace Manufacturing: Suitable for components subjected to demanding mechanical stresses and environmental exposure.

By standardizing the flanges for titanium alloy TI-P64001, SIST EN 3867:2005 supports effective supply chain management and interoperability in aerospace manufacturing.

Related Standards

• EN 3310 & EN 3311: Define the titanium alloy TI-P64001 material in forging and bar formats.
• TR 4053: Provides assembly recommendations for pipe couplings, loose flanges, and seals using titanium alloy materials.
• ISO 286-2: System of limits and fits, covering tolerance grades applicable to flange dimensions.
• EN 2424: Specifies marking procedures for aerospace products, ensuring product traceability.
• EN 9100: Quality management systems standard tailored for aerospace design and manufacturing processes.

Practical Value

Implementing SIST EN 3867:2005 helps aerospace manufacturers:

• Maintain consistent flange designs to meet stringent aerospace safety standards.
• Ensure material reliability using certified titanium alloy TI-P64001 components.
• Facilitate interoperability and reduce assembly errors via standardized dimensions and markings.
• Enhance quality control aligned with internationally recognized aerospace quality management systems.
• Improve maintenance and servicing through traceable marking and assembly guidelines.

This standard is vital for aerospace engineers, manufacturers, and quality assurance teams focused on high-integrity piping systems using advanced titanium alloys.

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.

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Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
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© 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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