SIST EN ISO 7438:2005
(Main)Metallic materials - Bend test (ISO 7438:2005)
Metallic materials - Bend test (ISO 7438:2005)
ISO 7438:2005 specifies a method for determining the ability of metallic materials to undergo plastic deformation in bending.
ISO 7438:2005 applies to test pieces taken from metallic products as specified in the relevant product standard. It is not applicable to certain materials or products, for example tubes in full section or welded joints, for which other standards exist.
Metallische Werkstoffe - Biegeversuch (ISO 7438:2005)
In dieser Internationalen Norm ist ein Verfahren zur Bestimmung der plastischen Verformbarkeit metallischer Werkstoffe im Biegeversuch festgelegt.
Diese Internationale Norm wird angewendet für Proben, die von metallischen Erzeugnissen nach entsprechenden Werkstoffnormen entnommen werden. Sie ist nicht anwendbar auf spezielle Werkstoffe und/oder Erzeugnisse, z. B. Rohrabschnitte, Schweißverbindungen, für die es andere Normen gibt.
Matériaux métalliques - Essai de pliage (ISO 7438:2005)
L'ISO 7438:2005 spécifie une méthode de détermination de l'aptitude à la déformation plastique par pliage des matériaux métalliques.
L'ISO 7438:2005 est applicable aux éprouvettes prélevées dans des produits métalliques tels que spécifiés dans la norme de produit pertinente. Elle n'est pas applicable à certains matériaux ou produits, par exemple tubes en section complète ou assemblages soudés pour lesquels d'autres normes existent.
Kovinski materiali – Upogibni preskus (ISO 7438:2005)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 7438:2005
01-november-2005
1DGRPHãþD
SIST EN ISO 7438:2000
Kovinski materiali – Upogibni preskus (ISO 7438:2005)
Metallic materials - Bend test (ISO 7438:2005)
Metallische Werkstoffe - Biegeversuch (ISO 7438:2005)
Matériaux métalliques - Essai de pliage (ISO 7438:2005)
Ta slovenski standard je istoveten z: EN ISO 7438:2005
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
SIST EN ISO 7438:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 7438:2005
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SIST EN ISO 7438:2005
EUROPEAN STANDARD
EN ISO 7438
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 77.040.10 Supersedes EN ISO 7438:2000
English version
Metallic materials - Bend test (ISO 7438:2005)
Matériaux métalliques - Essai de pliage (ISO 7438:2005) Metallische Werkstoffe - Biegeversuch (ISO 7438:2005)
This European Standard was approved by CEN on 13 June 2005.
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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7438:2005: E
worldwide for CEN national Members.
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SIST EN ISO 7438:2005
EN ISO 7438:2005 (E)
Foreword
This document (EN ISO 7438:2005) has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" in collaboration with Technical Committee ECISS/TC 1 "Steel -
Mechanical testing", the secretariat of which is held by AFNOR.
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 December 2005, and conflicting national
standards shall be withdrawn at the latest by December 2005.
This document supersedes EN ISO 7438:2000.
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 7438:2005 has been approved by CEN as EN ISO 7438:2005 without any
modifications.
2
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SIST EN ISO 7438:2005
INTERNATIONAL ISO
STANDARD 7438
Second edition
2005-06-15
Metallic materials — Bend test
Matériaux métalliques — Essai de pliage
Reference number
ISO 7438:2005(E)
©
ISO 2005
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SIST EN ISO 7438:2005
ISO 7438:2005(E)
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ii © ISO 2005 – All rights reserved
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SIST EN ISO 7438:2005
ISO 7438:2005(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Symbols and designations . 1
3 Principle. 1
4 Test equipment . 2
5 Test piece . 4
6 Procedure . 5
7 Interpretation of results. 7
8 Test report . 7
Annex A (informative) Determination of the bend angle from the measurement of the
displacement of the former. 8
© ISO 2005 – All rights reserved iii
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SIST EN ISO 7438:2005
ISO 7438:2005(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 7438 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 7438:1985), which has been technically revised.
iv © ISO 2005 – All rights reserved
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SIST EN ISO 7438:2005
INTERNATIONAL STANDARD ISO 7438:2005(E)
Metallic materials — Bend test
1 Scope
This International Standard specifies a method for determining the ability of metallic materials to undergo
plastic deformation in bending.
This International Standard applies to test pieces taken from metallic products, as specified in the relevant
product standard. It is not applicable to certain materials or products, for example tubes in full section or
welded joints, for which other standards exist.
2 Symbols and designations
Symbols and designations used in the bend test are shown in Figures 1 and 2 and specified in Table 1.
Table 1 — Symbols and designations
Symbol Designation Unit
a Thickness or diameter of test piece (or diameter of the inscribed circle mm
for pieces of polygonal cross-section)
b
Width of the test piece mm
L Length of the test piece mm
l Distance between supports mm
D Diameter of the former mm
α Angle of bend degrees
r Internal radius of bend portion of test piece after bending mm
f
Displacement of the former mm
c Distance between the plane including the horizontal axis of supports mm
and the central axis of the rounded portion of the former before test
p
Distance between the vertical planes including the central axis and the mm
vertical axis of each support
...
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