SIST EN 4561:2004
(Main)Aerospace series - Pipe coupling, welded, in heat resisting steel - Elbow 90° - Inch series
Aerospace series - Pipe coupling, welded, in heat resisting steel - Elbow 90° - Inch series
This standard specifies the characteristics of welded elbows 90° for inch series pipe couplings, in heat resisting steel, for aerospace applications.
Nominal pressure: Class D per ISO 6771
Luft- und Raumfahrt - Rohrverschraubung zum Anschweißen aushochwarmfestem Stahl - Winkelstutzen 90° - Inch-Reihe
Diese Norm legt die Eigenschaften von Winkelstutzen 90° zum Anschweißen für Rohrverschraubungen der Inch-Reihe aus hochwarmfestem Stahl für Anwendungen in der Luft- und Raumfahrt fest.
Nenndruck: Klasse D nach ISO 6771
Série aérospatiale - Systeme de raccordement a souder, en acier résistant a chaud - Coudes a 90° - Série inch
Aerospace series - Pipe coupling, welded, in heat resisting steel - Elbow 90° - Inch series
General Information
Overview
EN 4561:2003 is a CEN (European) aerospace standard that specifies the characteristics of welded 90° pipe elbows (inch series) in heat resisting steel for aerospace fluid systems. The standard covers geometric configuration, dimensions, tolerances, material references, marking and designation rules for elbows used in threaded/welded pipe coupling systems. Nominal pressure classification is Class D in accordance with ISO 6771.
Key topics and requirements
- Scope & configuration
- Applies to 90° welded elbows in the inch series for aerospace pipe couplings.
- Shapes and manufacturing routes defined for molding/forging parts and whole-machining parts (Figures 1 and 2).
- Dimensions, tolerances & masses
- Dimensional data, tolerances and masses are provided in millimetres and organized by dimensional codes (see Table 2).
- Dimensional codes represent nominal diameter in 1/16 inch units and wall-thickness codes (e.g., A = 0.711 mm, B = 0.889 mm).
- Materials
- Heat resisting steels referenced to EN 3363, EN 3468 or EN 3487 (aerospace steel grades for castings, forgings or bars).
- Weld end options
- Weld end option codes (1, 2) indicate weld end on one or both sides; manufacturing tolerances vary accordingly.
- Marking & designation
- Marking per EN 2424 (style A) and designation format example: ELBOW EN4561 A10–1.
- Pressure & technical specification
- Nominal pressure: Class D (ISO 6771). Technical specification cross-referenced to EN 4560.
Applications and who uses EN 4561
- Applications
- Specification for elbows used in aerospace fluid systems: fuel, hydraulic and pneumatic piping where heat-resisting steel elbows are required.
- Useful for design, manufacture, procurement, inspection, and maintenance of aircraft pipe couplings and assemblies.
- Typical users
- Aerospace OEMs and subsystem suppliers
- Precision foundries and machine shops producing elbows to inch-series dimensions
- Quality assurance and certification bodies
- Mechanical designers and stress analysts specifying fittings for fluid systems
Related standards
- ISO 6771 - Pressure and temperature classifications for aerospace fluid systems
- EN 2424 - Marking of aerospace products
- EN 4549 - Pipe coupling end configuration (inch series)
- EN 4560 - Technical specification for related pipe couplings
- EN 3363 / EN 3468 / EN 3487 - Aerospace heat resisting steel material standards
EN 4561 is primarily a dimensional and material specification that ensures interchangeability, traceability and compliance when selecting welded 90° elbows in inch series for aerospace applications.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2004
Aerospace series - Pipe coupling, welded, in heat resisting steel - Elbow 90° - Inch
series
Aerospace series - Pipe coupling, welded, in heat resisting steel - Elbow 90° - Inch
series
Luft- und Raumfahrt - Rohrverschraubung zum Anschweißen aushochwarmfestem Stahl
- Winkelstutzen 90° - Inch-Reihe
Série aérospatiale - Systeme de raccordement a souder, en acier résistant a chaud -
Coudes a 90° - Série inch
Ta slovenski standard je istoveten z: EN 4561:2003
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 4561
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2003
ICS 49.080
English version
Aerospace series - Pipe coupling, welded, in heat resisting steel
- Elbow 90° - Inch series
Série aérospatiale - Système de raccordement à souder,
en acier résistant à chaud - Coudes à 90° - Série inch
This European Standard was approved by CEN on 14 September 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4561:2003 E
worldwide for CEN national Members.
Contents
Foreword.3
1 Scope .3
2 Normative references .3
3 Required characteristics.4
3.1 Configuration – Dimensions – Tolerances – Masses.4
3.2 Materials.4
4 Designation.7
5 Marking .7
6 Technical specification .7
Foreword
This document EN 4561:2003 has been prepared by the European Association of Aerospace Manufacturers
(AECMA).
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 AECMA, 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 August 2003, and conflicting national standards shall be withdrawn at the latest by
August 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the follow
...
Frequently Asked Questions
SIST EN 4561:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe coupling, welded, in heat resisting steel - Elbow 90° - Inch series". This standard covers: This standard specifies the characteristics of welded elbows 90° for inch series pipe couplings, in heat resisting steel, for aerospace applications. Nominal pressure: Class D per ISO 6771
This standard specifies the characteristics of welded elbows 90° for inch series pipe couplings, in heat resisting steel, for aerospace applications. Nominal pressure: Class D per ISO 6771
SIST EN 4561:2004 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.
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