ISO 8496:2013
(Main)Metallic materials - Tube - Ring tensile test
Metallic materials - Tube - Ring tensile test
ISO 8496:2013 specifies a method for a ring tensile test of tubes to reveal surface and internal defects by subjecting the test piece to strain until fracture occurs. This test may also be used to assess the ductility of tubes. The ring tensile test is applicable to tubes having an outside diameter exceeding 150 mm and a wall thickness no greater than 40 mm. The inside diameter shall be greater than 100 mm.
Matériaux métalliques — Tubes — Essai de traction sur anneaux
L'ISO 8496:2013 spécifie une méthode d'essai de traction sur anneaux de tubes, visant à révéler les défauts superficiels et internes, en soumettant l'éprouvette à une déformation jusqu'à rupture. L'essai peut également être utilisé pour évaluer la ductilité des tubes. L'essai de traction sur anneaux s'applique aux tubes ayant un diamètre extérieur supérieur à 150 mm et une épaisseur de paroi ne dépassant pas 40 mm. Le diamètre intérieur doit être supérieur à 100 mm.
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 8496:2013 specifies a standardized ring tensile test method for metallic tubes to reveal surface and internal defects and to assess ductility. The test subjects a short ring cut from the tube to circumferential strain until fracture occurs. ISO 8496:2013 is the third edition (revising the 1998 edition) and is maintained by ISO/TC 164 (Mechanical testing of metals), Subcommittee SC 2 (Ductility testing).
Keywords: ISO 8496:2013, ring tensile test, tube tensile test, metallic tubes, ductility test, tube testing
Key topics and technical requirements
- Scope / Applicability
- Applies to tubes with outside diameter > 150 mm, wall thickness ≤ 40 mm, and inside diameter > 100 mm.
- Test principle
- A ring cut from the tube is strained in the circumferential direction until fracture.
- Test piece
- Ring end faces must be perpendicular to the tube axis.
- Typical ring width ≈ 15 mm; if wall thickness > 15 mm, ring width may equal thickness.
- Ends must be free from burrs; edges may be rounded or chamfered.
- Apparatus
- Two equal-diameter circular pins with parallel, movable axes.
- Pin diameter should be the minimum required for strength and, where possible, at least 3 × wall thickness of the tube.
- Procedure
- Ambient testing temperature: 10 °C to 35 °C; controlled testing: 23 °C ± 5 °C.
- Pins are moved apart at a specified rate until the ring fractures. In cases of dispute, the rate must not exceed 5 mm/s.
- Interpretation follows the applicable product standard; if none is specified, the ring passes if expected fracture behavior is observed and no other cracks are visible without magnification.
- Test report
- When required by product standards, include: reference to ISO 8496, test-piece identification, dimensions, and test result.
Applications
- Quality control and acceptance testing for large-diameter metallic tubes used in:
- Pressure vessels, pipelines, and structural applications
- Oil & gas transmission and refining equipment
- Heavy fabrication where tube integrity and ductility are critical
- Non-destructive screening for surface and internal defects and comparative ductility assessment during production and inspection.
Who uses this standard
- Tube manufacturers and mill testing laboratories
- Third-party inspection agencies and acceptance test labs
- Quality engineers, metallurgists, and R&D teams evaluating tube forming, welding, or heat-treatment effects
Related standards
- Product-specific tube standards and acceptance criteria (referenced by ISO 8496 for interpretation)
- ISO/TC 164 committee publications on mechanical testing of metals and ductility testing
For procurement, testing protocols, or compliance, reference ISO 8496:2013 and consult the relevant product standard for pass/fail criteria.
Frequently Asked Questions
ISO 8496:2013 is a standard published by the International Organization for Standardization (ISO). Its full title is "Metallic materials - Tube - Ring tensile test". This standard covers: ISO 8496:2013 specifies a method for a ring tensile test of tubes to reveal surface and internal defects by subjecting the test piece to strain until fracture occurs. This test may also be used to assess the ductility of tubes. The ring tensile test is applicable to tubes having an outside diameter exceeding 150 mm and a wall thickness no greater than 40 mm. The inside diameter shall be greater than 100 mm.
ISO 8496:2013 specifies a method for a ring tensile test of tubes to reveal surface and internal defects by subjecting the test piece to strain until fracture occurs. This test may also be used to assess the ductility of tubes. The ring tensile test is applicable to tubes having an outside diameter exceeding 150 mm and a wall thickness no greater than 40 mm. The inside diameter shall be greater than 100 mm.
ISO 8496:2013 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 8496:2013 has the following relationships with other standards: It is inter standard links to ISO/IEC 19756:2011, ISO 8496:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 8496:2013 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 8496
Third edition
2013-11-15
Metallic materials — Tube — Ring
tensile test
Matériaux métalliques — Tubes — Essai de traction sur anneaux
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
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Published in Switzerland
ii © ISO 2013 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Principle . 1
3 Apparatus . 1
4 Test piece . 2
5 Procedure. 2
6 Test report . 2
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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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 t
...
NORME ISO
INTERNATIONALE 8496
Troisième édition
2013-11-15
Matériaux métalliques — Tubes —
Essai de traction sur anneaux
Metallic materials — Tube — Ring tensile 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
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
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 Principe . 1
3 Appareillage . 1
4 Éprouvette . 2
5 Mode opératoire. 2
6 Rapport d’essai . 2
Avant-propos
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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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