Metallic materials - Tube - Ring tensile test (ISO 8496:2013)

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.

Metallische Werkstoffe - Rohr - Ringzugversuch (ISO 8496:2013)

Diese Internationale Norm legt ein Verfahren für einen Ringzugversuch für Rohre fest, der der Feststellung von Oberflächen- und Innenfehlern durch Beanspruchung eines Probekörpers bis zum Bruch dient. Diese Prüfung darf auch zur Bewertung der Dehnbarkeit von Rohren angewendet werden.
Der Ringzugversuch gilt für Rohre mit einem Außendurchmesser von mehr als 150 mm und einer Wanddicke von höchstens 40 mm. Der Innendurchmesser muss größer als 100 mm sein.

Matériaux métalliques - Tubes - Essai de traction sur anneaux (ISO 8496:2013)

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.

Kovinski materiali - Cev - Natezni preskus obroča (ISO 8496:2013)

Ta mednarodni standard določa metodo za natezni preskus obroča cevi, s čimer se odkrije površinske in notranje hibe tako, da se preskušanca nateza, dokler se ta ne zlomi. Ta preskus se lahko uporabi tudi za ocenjevanje duktilnosti cevi. Natezni preskus obroča cevi se uporablja za cevi z zunanjim premerom, večjim od 150 mm, in debelino stene, manjšo od 40 mm. Notranji premer je nujno večji od 100 mm.

General Information

Status
Published
Publication Date
19-Nov-2013
Withdrawal Date
30-May-2014
ICS
77.040.10 - Mechanical testing of metals
Technical Committee
ECISS/TC 110 - Steel tubes, and iron and steel fittings
Drafting Committee
ECISS/TC 110 - Steel tubes, and iron and steel fittings
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
20-Nov-2013
Completion Date
20-Nov-2013
Ref Project
SIST EN ISO 8496:2014 - Metallic materials - Tube - Ring tensile test (ISO 8496:2013)

Relations

Replaces
EN ISO 8496:2004 - Metallic materials - Tube - Ring tensile test (ISO 8496:1998)
Effective Date
17-Apr-2013

Overview

EN ISO 8496:2013 (ISO 8496:2013) defines the ring tensile test for metallic tubes. The standard specifies a method to subject a ring cut from a tube to circumferential strain until fracture, with the primary purpose of revealing surface and internal defects and, where appropriate, assessing tube ductility. This European adoption by CEN is published as EN ISO 8496:2013 and supersedes the 2004 edition.

Key topics and technical requirements

  • Scope and applicability
    • Applicable 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 occurs.
  • Apparatus
    • Two circular pins of equal diameter with parallel axes; pins move apart while remaining parallel.
    • Pin diameter should be the minimum permitted by strength but, where inside diameter allows, at least 3× the wall thickness of the tube.
  • Test piece preparation
    • Ring end faces perpendicular to tube axis.
    • Typical ring width ≈ 15 mm; if wall thickness > 15 mm, ring length may equal thickness.
    • Ends must be free of burrs; edges may be rounded or chamfered.
  • Procedure and conditions
    • General ambient test temperature: 10 °C to 35 °C. Controlled tests: 23 °C ± 5 °C.
    • Strain the ring by moving pins apart at a specified rate; in disputes the rate shall not exceed 5 mm/s.
  • Interpretation
    • Follow the relevant product standard for acceptance criteria. If unspecified, a test passes when expected fracture behavior occurs and no other cracks are visible without magnification.
  • Test report minimum contents
    • Reference to ISO 8496, identification and dimensions of test piece, and test result.

Practical applications

  • Detecting surface and internal defects (e.g., laps, seams, micro-cracks) in large-diameter tubes.
  • Assessing ductility and fracture behavior of metallic tubes used in pipelines, pressure equipment, structural components, and industrial tubing where circumferential integrity is critical.
  • Quality control and lot acceptance testing in tube manufacturing, finishing, and incoming inspection.

Who uses this standard

  • Metallurgical and mechanical testing laboratories performing tube mechanical tests.
  • Tube manufacturers, quality assurance engineers, and inspection bodies.
  • Designers and specifiers who require validated tube ductility and defect-detection methods for large-diameter tubes.

Related and administrative notes

  • Prepared by ISO/TC 164 (Mechanical testing of metals), with involvement from ECISS/TC 110.
  • This edition (2013) is a minor revision of earlier editions and is adopted in Europe as EN ISO 8496:2013.
  • For interpretation and acceptance criteria always refer to the relevant product standard specified by the purchaser or regulatory framework.

Frequently Asked Questions

EN ISO 8496:2013 is a standard published by the European Committee for Standardization (CEN). Its full title is "Metallic materials - Tube - Ring tensile test (ISO 8496:2013)". 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.

EN 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.

EN ISO 8496:2013 has the following relationships with other standards: It is inter standard links to EN ISO 8496:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN ISO 8496:2013 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-julij-2014
1DGRPHãþD
SIST EN ISO 8496:2004
.RYLQVNLPDWHULDOL&HY1DWH]QLSUHVNXVREURþD ,62
Metallic materials - Tube - Ring tensile test (ISO 8496:2013)
Metallische Werkstoffe - Rohr - Ringzugversuch (ISO 8496:2013)
Matériaux métalliques - Tubes - Essai de traction sur anneaux (ISO 8496:2013)
Ta slovenski standard je istoveten z: EN ISO 8496:2013
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 8496
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2013
ICS 77.040.10 Supersedes EN ISO 8496:2004
English Version
Metallic materials - Tube - Ring tensile test (ISO 8496:2013)
Matériaux métalliques - Tubes - Essai de traction sur Metallische Werkstoffe - Rohr - Ringzugversuch (ISO
anneaux (ISO 8496:2013) 8496:2013)
This European Standard was approved by CEN on 28 October 2013.

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 CEN-CENELEC 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 CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8496:2013 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 8496:2013) has been prepared by Technical Committee ISO/TC 164 "Mechanical
testing of metals" in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and steel
fittings” the secretariat of which is held by UNI.
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 May 2014, and conflicting national standards shall be withdrawn at the
latest by May 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8496:2004.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8496:2013 has been approved by CEN as EN ISO 8496:2013 without any modification.
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 8496:2013(E)
©
ISO 2013
ISO 8496:2013(E)
© 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
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ii © ISO 2013 – All rights reserved

ISO 8496:2013(E)
Contents Page
Foreword .iv
1 Scope .
...

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