SIST EN ISO 7438:2000

Metallic materials - Bend test (ISO 7438:1985)

To specify the method for determining the ability of metallic materials to undergo plastic deformation in bending. The standard is not applicable to certain materials and/or products, for example tubes in full selection or welded joints.

Metallische Werkstoffe - Biegeversuch (ISO 7438:1985)

In dieser Internationalen Norm ist das Verfahren zur Bestimmung der plastischen Verformbarkeit metallischer Werkstoffe im Biegeversuch festgelegt.

Matériaux métalliques - Essai de pliage (ISO 7438:1985)

L'IEC 60371-3-1:2006 s'applique à divers types de matériaux rigides à base de clivures de mica ou de papier de mica utilisés pour réaliser des entrelames de collecteurs. Ces matériaux doivent être réalisés en mica muscovite ou en mica phlogopite à partir de clivures ou de papier de mica agglomérés à l'aide d'un agglomérant approprié. Ils sont fournis dans les formes suivantes:
- feuilles aux dimensions de pressage ou après rectification;
- bandes découpées dans ces feuilles;
- entrelames de collecteurs réalisés aux dimensions, formes et conditions de la commande de l'utilisateur. L'épaisseur normale de fabrication se situe entre 0,3 mm et 2 mm. Cette troisième édition de la CEI 60371-3-1 remplace la deuxième édition parue en 1984, dont elle constitue une révision technique. Les principales modifications par rapport à l'édition antérieure portent sur les numéros des articles pour correspondre à la numérotation des articles de la dernière édition de la CEI 60371-2:2004.
Mots clés: clivures de mica ou de papier de mica utilisés pour réaliser des entrelames de collecteurs, muscovite ou en mica phlogopite

Kovinski materiali - Upogibni preskus (ISO 7438:1985)

General Information

• Status: Withdrawn
• Publication Date: 30-Sep-2000
• Withdrawal Date: 31-Oct-2005
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: PKG - Testing of metallic materials
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 01-Nov-2005
• Due Date: 01-Nov-2005
• Completion Date: 01-Nov-2005
• Ref Project: EN ISO 7438:2000 - Metallic materials - Bend test (ISO 7438:1985)

Relations

• Replaced By: SIST EN ISO 7438:2005 - Metallic materials - Bend test (ISO 7438:2005)
• Effective Date: 01-Nov-2005

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 7438:2000
01-oktober-2000
Kovinski materiali - Upogibni preskus (ISO 7438:1985)
Metallic materials - Bend test (ISO 7438:1985)
Metallische Werkstoffe - Biegeversuch (ISO 7438:1985)
Matériaux métalliques - Essai de pliage (ISO 7438:1985)
Ta slovenski standard je istoveten z: EN ISO 7438:2000
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
SIST EN ISO 7438:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 7438:2000

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SIST EN ISO 7438:2000

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SIST EN ISO 7438:2000

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SIST EN ISO 7438:2000
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlON.ME>KCIYHAPOAHAfl OPl-AHM3ALWlR ll0 CTAH~APTM3ALWl~RGANlSATlON INTERNATIONALE DE NORMALISATION
Metallic materials - Bend test
Matki’aux m&alliques - Essai de pliage
First edition - 1985-07-01
UDC 669: 620.177
Ref. No. IS0 74384985 (E)
Descriptors : metals, tests, bend tests, test equipment, test specimens.
Price based on 5 pages

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SIST EN ISO 7438:2000
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 7438 was prepared by Technical Committee ISO/TC 164,
Mechanical testing of metals.
It cancels and replaces IS0 Recommendations ISO/R 85-1959, ISO/R 874959,
ISO/R 398-1964 and ISO/R 9544969, of which it constitutes a technical revision.
0 International Organization for Standardization, 1985
Printed in Switzerland

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SIST EN ISO 7438:2000
INTERNATIONAL STANDARD
IS0 74384985 (E)
Metallic materials - Bend test
,
Table 1
1 Scope and field of application
This International Standard specifies the method for determin- Designation Unit
Symbol
ing the ability of metallic materials to undergo plastic deforma-
m
Thickness or diameter of test piece
a
tion in bending.
(or diameter of the inscribed circle for
mm
pieces of polygonal cross-section)
This International Standard applies to the bend test of test
pieces taken from metallic products as specified in the relevant mm
Width of test piece
product standard. It is not applicable to certain materials
mm
Length of test piece
and/or products, for example tubes in full section or welded
joints, for which other standards exist.
Distance between supports mm
Diameter of mandrel mm
Angie of bend degree
2 Principle
Internal radius of bend portion of test
The bend test consists in submitting a test piece of round,
mm
piece after bending
square, rectangular, or polygonal cross-section to plastic defor-
mation by bending, without changing the direction of loading,
until a specified angle of bend is reached.
The axes of the two legs of the test piece remain in a plane
4 Test equipment
perpendicular to the axis of bending. In the case of a 180°
bend, the two lateral surfaces may, depending on the require-
The bend test shall be carried out in testing machines or
ments of the material standard, lie flat against each other or
presses equipped with the following devices:
may be parallel at a specified distance, an insert being used to
control this distance.
a) bending device with two supports and a mandrel as
shown in figure 1;
b) bending device with a V-block and a mandrel as shown
3 Symbols and designations
in figure 2;
Symbols and designations used in the bend test are shown in
c) bending device with a clamp as shown in figure 3.
figures 1 and 2, and specified in table 1.

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SIST EN ISO 7438:2000
IS0 74384985 (E)
Figure 1
Figure 2
i
Vice
Figure 3

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SIST EN ISO 7438:2000
IS0 7438-1985 (El
. Bending device with supports and a mandrel
41 5.3 Unless otherwise specified in the relevant standard, the
width of the test piece shall be as follows:
4.1.1 The length of the supports and the width of the mandrel
a) the same as the product width, if the latter is equal to or
shall be greater than the width or diameter of the test piece.
less than 20 mm;
The diameter of the mandrel is determined by the material stan-
b) when the width of a product is more than 20 mm:
dard. The test piece supports and the mandrel shall be of suf-
ficient hardness (see figure 1).
20 + 5 mm for products of thickness less than 3 mm,
between 20 and 50 mm for products of thickness equal
4.1.2 Unless otherwise specified, the distance between the
to or greater than 3 mm.
supports, I, shall be:
I = (D + 3~) ,+ a/2 5.4 Thickness of the test piece
and shall not change during the bend test.
5.4.1 The thickness of the test pieces from sheets, strips and
sections shall be equal to the thickness of the product to be
tested. If the thickness of the pro
...