SIST EN ISO 8493:2004
(Main)Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)
Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)
WI created following Res COCOR 10/2001: approval of ECISS/TC 29 business plan (CC/010719)
Metallische Werkstoffe - Rohr - Aufweitversuch (ISO 8493:1998)
In dieser Internationalen Norm ist ein Verfahren zur Bestimmung der Aufweitfähigkeit festgelegt für Rohre aus metallischen Werkstoffen mit kreisförmigem Querschnitt.
Diese Internationale Norm sollte für Rohre mit einem Außendurchmesser nicht größer als 150 mm (100 mm für Leichtmetalle) und einer Wanddicke nicht größer als 10 mm angewendet werden. Der Bereich des Außendurchmessers oder der Wanddicke, für den diese Internationale Norm zutrifft, kann genauer in der entsprechenden Erzeugnisnorm festgelegt sein.
Matériaux métalliques - Tubes - Essai d'évasement (ISO 8493:1998)
Kovinski materiali – Cev - Preskus širjenja cevi (ISO 8493:1998)
General Information
- Status
- Published
- Publication Date
- 31-Oct-2004
- Technical Committee
- IFEK - Ferrous metals
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Nov-2004
- Due Date
- 01-Nov-2004
- Completion Date
- 01-Nov-2004
Relations
- Effective Date
- 01-Jul-2005
Overview
EN ISO 8493:2004 (identical to ISO 8493:1998) specifies the drift-expanding (tube expansion) test for metallic tubes. The standard defines a method to determine the ability of circular-section tubes to undergo plastic deformation by forcing a conical mandrel through a tube end until a specified outside diameter is reached. It applies to tubes with outside diameters up to 150 mm (100 mm for light metals) and wall thicknesses up to 10 mm, unless a product standard specifies otherwise.
Keywords: EN ISO 8493:2004, ISO 8493, drift-expanding test, metallic tubes, tube ductility, conical mandrel.
Key topics and requirements
- Scope: Tests tube ductility/expansion capability for circular-section tubes (limits on diameter and thickness as above).
- Test principle: Expand the tube end by driving a conical mandrel until the target maximum outside diameter or specified relative expansion (%) is achieved.
- Equipment:
- Variable-speed press or universal testing machine.
- Polished, sufficiently hard conical mandrel; preferred cone angles are 30°, 45° and 60°.
- Mandrel may include a groove for longitudinal weld flash on welded tubes.
- Test pieces:
- Length depends on mandrel angle: when angle ≤ 30° use approx. L = 2·D; when angle > 30° use approx. L = 1.5·D.
- Remaining cylindrical part after expansion must be at least 0.5·D. Ends should be perpendicular to tube axis; edges may be rounded or chamfered.
- Test conditions:
- Ambient testing: 10 °C to 35 °C; controlled testing at 23 °C ± 5 °C.
- Mandrel insertion without shock; mandrel must not rotate relative to the tube. Lubrication is permitted.
- Dispute rate limit: mandrel penetration ≤ 50 mm/min.
- Acceptance criteria:
- If product standard does not provide criteria, the test is passed if no visible cracks are observed without magnification. Slight edge cracking is not cause for rejection.
- Test report must include reference to ISO 8493, test-piece ID and dimensions, expanded maximum diameter or relative expansion, mandrel angle and the test result.
Applications and users
- Quality control and acceptance testing of steel, aluminium and other metallic tubes used in construction, hydraulic systems, heat exchangers and general engineering.
- Typical users: tube manufacturers, independent test laboratories, product standards committees, inspection and procurement engineers who need to verify tube ductility, forming performance and resistance to expansion-related cracking.
Related standards
- This European adoption EN ISO 8493:2004 supersedes EN 10234:1993.
- Prepared by ISO/TC 164 (Mechanical testing of metals) and adopted by CEN (ECISS/TC 29 - Steel tubes and fittings for steel tubes).
This summary gives practical guidance on what EN ISO 8493:2004 covers and how the drift-expanding test is specified and used in industry.
Frequently Asked Questions
SIST EN ISO 8493:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)". This standard covers: WI created following Res COCOR 10/2001: approval of ECISS/TC 29 business plan (CC/010719)
WI created following Res COCOR 10/2001: approval of ECISS/TC 29 business plan (CC/010719)
SIST EN ISO 8493:2004 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.
SIST EN ISO 8493:2004 has the following relationships with other standards: It is inter standard links to SIST EN 10234:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN ISO 8493:2004 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 SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2004
1DGRPHãþD
SIST EN 10234:1998
Kovinski materiali – Cev - Preskus širjenja cevi (ISO 8493:1998)
Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)
Metallische Werkstoffe - Rohr - Aufweitversuch (ISO 8493:1998)
Matériaux métalliques - Tubes - Essai d'évasement (ISO 8493:1998)
Ta slovenski standard je istoveten z: EN ISO 8493:2004
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 8493
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2004
ICS 77.040.10 Supersedes EN 10234:1993
English version
Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)
Matériaux métalliques - Tubes - Essai d'évasement (ISO Metallische Werkstoffe - Rohr - Aufweitversuch (ISO
8493:1998) 8493:1998)
This European Standard was approved by CEN on 1 July 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, 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
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8493:2004: E
worldwide for CEN national Members.
Foreword
The text of ISO 8493:1998 has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals” of the International Organization for Standardization (ISO) and
has been taken over as EN ISO 8493:2004 by Technical Committee ECISS/TC 29 "Steel
tubes and fittings for steel tubes", 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 January 2005, and conflicting national
standards shall be withdrawn at the latest by January 2005.
This document supersedes EN 10234:1993.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 8493:1998 has been approved by CEN as EN ISO 8493:2004 without any
modifications.
INTERNATIONAL ISO
STANDARD 8493
Second edition
1998-11-01
Metallic materials — Tube —
Drift-expanding test
Matériaux métalliques — Tubes — Essai d’évasement
A
Reference number
ISO 8493:1998(E)
ISO 8493:1998(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 8493 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals,
Subcommittee SC 2, Ductility testing.
This second edition cancels and replaces the first edition (ISO
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...