ISO 8494:2013
(Main)Metallic materials - Tube - Flanging test
Metallic materials - Tube - Flanging test
ISO 8494:2013 specifies a method for determining the ability of metallic tubes of circular cross-section to undergo plastic deformation during flange formation. ISO 8494:2013 is intended for tubes having an outside diameter no greater than 150 mm and a wall thickness no greater than 10 mm, although the range of diameters or wall thickness for which ISO 8494:2013 is applicable may be more exactly specified in the relevant product standard.
Matériaux métalliques — Tubes — Essai de rabattement de collerette
L'ISO 8494:2013 spécifie une méthode de détermination de l'aptitude à la déformation plastique de tubes métalliques de section circulaire par rabattement de collerette. La présente Norme internationale est destinée aux tubes de diamètre extérieur au plus égal à 150 mm et d'épaisseur de paroi ne dépassant pas 10 mm, bien que la gamme de diamètres ou d'épaisseurs à laquelle la présente Norme internationale s'applique, puisse être spécifiée de façon plus précise dans la norme de produit concernée.
General Information
- Status
- Published
- Publication Date
- 04-Nov-2013
- Technical Committee
- ISO/TC 164/SC 2 - Ductility testing
- Drafting Committee
- ISO/TC 164/SC 2 - Ductility testing
- Current Stage
- 9020 - International Standard under periodical review
- Start Date
- 15-Oct-2025
- Completion Date
- 15-Oct-2025
Relations
- Effective Date
- 06-Jun-2022
- Effective Date
- 20-Apr-2013
Overview - ISO 8494:2013 (Flanging test for metallic tubes)
ISO 8494:2013 specifies a standardized flanging test method to determine the ability of metallic tubes (circular cross-section) to undergo plastic deformation during flange formation. The standard applies to tubes with an outside diameter up to 150 mm and wall thickness up to 10 mm, unless a relevant product standard narrows that range. ISO 8494 is part of the mechanical testing family for metallic materials and was prepared by ISO/TC 164 (Ductility testing).
Key topics and technical requirements
- Scope and purpose: Assess tube ductility during end-flange formation by mechanically expanding a tube end until a prescribed flange diameter is reached.
- Test specimen:
- Length ~ 1.5 × original outside diameter (D); remaining cylindrical length after flanging ≥ 0.5 × D.
- Ends machined perpendicular to tube axis; edges may be rounded or chamfered.
- Internal weld flash may be removed for welded tubes.
- Testing equipment:
- Variable-speed press or universal testing machine.
- Polished, hardened forming tools: a conical mandrel (commonly 90°), a flanging tool (cylindrical end ≈ 1 mm less than tube ID, plus a flat concentric portion at least the required flange diameter) and optional supporting die.
- Procedure highlights:
- Test temperature normally ambient (10 °C to 35 °C); controlled testing at 23 °C ± 5 °C.
- Preform by forcing the conical mandrel to drift the tube, then form the flange with the flanging tool to reach the specified maximum flange diameter (D_u).
- Mandrel may be lubricated and must not rotate relative to the test piece.
- In dispute cases, forming tool speed ≤ 50 mm/min.
- Acceptance/interpretation:
- Follow the relevant product standard for pass/fail criteria. If none is specified, the test piece passes if no visible cracks are detected without magnification; slight edge cracking is not cause for rejection.
- Test report must include reference to ISO 8494, specimen identification and dimensions, maximum flange diameter or relative expansion, corner radius R (if relevant), and the test result.
Applications and users
- Used by tube manufacturers, metallurgical and mechanical testing laboratories, and product standards committees to validate formability and quality control of tubes intended for flanged connections.
- Typical industries: automotive, hydraulic and pneumatic systems, heat exchangers, plumbing and HVAC components where reliable tube flanges are required.
- Useful for design, procurement, and certification activities that need objective, repeatable tube flanging performance data.
Related standards and context
- Part of ISO/TC 164 mechanical testing of metals, Subcommittee SC 2 (Ductility testing).
- Test details (e.g., exact flange diameter, radii, and acceptance criteria) are often specified in the relevant product standard for the tube material or application.
Frequently Asked Questions
ISO 8494:2013 is a standard published by the International Organization for Standardization (ISO). Its full title is "Metallic materials - Tube - Flanging test". This standard covers: ISO 8494:2013 specifies a method for determining the ability of metallic tubes of circular cross-section to undergo plastic deformation during flange formation. ISO 8494:2013 is intended for tubes having an outside diameter no greater than 150 mm and a wall thickness no greater than 10 mm, although the range of diameters or wall thickness for which ISO 8494:2013 is applicable may be more exactly specified in the relevant product standard.
ISO 8494:2013 specifies a method for determining the ability of metallic tubes of circular cross-section to undergo plastic deformation during flange formation. ISO 8494:2013 is intended for tubes having an outside diameter no greater than 150 mm and a wall thickness no greater than 10 mm, although the range of diameters or wall thickness for which ISO 8494:2013 is applicable may be more exactly specified in the relevant product standard.
ISO 8494:2013 is classified under the following ICS (International Classification for Standards) categories: 77.040.10 - Mechanical testing of metals. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 8494:2013 has the following relationships with other standards: It is inter standard links to ISO 12611:2004, ISO 8494:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 8494:2013 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 ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 8494
Third edition
2013-11-15
Metallic materials — Tube —
Flanging test
Matériaux métalliques — Tubes — Essai de rabattement de collerette
Reference number
©
ISO 2013
© ISO 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
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Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Symbols, designations and units . 1
3 Principle . 2
4 Testing equipment . 2
5 Test piece . 2
6 Procedure. 2
7 Test report . 3
Foreword
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
The committee responsible for this document is ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 2, Ductility testing.
This third edition cancels and replaces the second edition (ISO 8494:1998), of which it constitutes a
minor revision.
iv © ISO 2013 – All rights reserved
INTERNATIONAL STANDARD ISO 8494:2013(E)
Metallic materials — Tube — Flanging test
1 Scope
This International Standard specifies a method for determining the ability of metallic tubes o
...
NORME ISO
INTERNATIONALE 8494
Troisième édition
2013-11-15
Matériaux métalliques — Tubes —
Essai de rabattement de collerette
Metallic materials — Tube — Flanging test
Numéro de référence
©
ISO 2013
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2013
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
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l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Version française parue en 2014
Publié en Suisse
ii © ISO 2013 – Tous droits réservés
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Symboles, désignations et unités . 1
3 Principe . 2
4 Appareillage . 2
5 Éprouvette . 2
6 Mode opératoire. 3
7 Rapport d’essai . 3
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
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décrites dans les Directives ISO/CEI, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
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du document sont indiqués dans l’Introduction et/ou sur la liste ISO des déclarations de brevets reçues
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Les éventuelles appellations commerciales utilisées dans le présent document sont données pour
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Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à l’évaluation
de la conformité, aussi bien que pour des informations au sujet de l’adhésion de l’ISO aux principes de
l’OMC concernant les obstacles techniques au commerce (OTC) voir le lien suivant: Avant-propos —
Informations supplémentaires.
Le comité chargé de l’élaboration du présent document est l’ISO/TC 164, Essais mécaniques des métaux,
sous-comité SC 2, Essais de ductilité.
Cette troisième édition annule et remplace la deuxième édition (ISO 8494:1998), dont elle constitue une
révision mineure.
iv © ISO 2013 – Tous droits réservés
NORME INTERNATIONALE ISO 8494:2013(F)
M
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