SIST EN 24498-1:2000

SLOVENSKI STANDARD
SIST EN 24498-1:2000
01-december-2000
Sintered metal materials, excluding hardmetals - Determination of apparent
hardness - Part 1: Materials of essentially uniform section hardness (ISO 4498-
1:1990)
Sintered metal materials, excluding hardmetals - Determination of apparent hardness -
Part 1: Materials of essentially uniform section hardness (ISO 4498-1:1990)
Metallische Sinterwerkstoffe, mit Ausnahme von Hartmetallen - Bestimmung der
scheinbaren Härte - Teil 1: Werkstoffe mit im wesentlichen gleichmäßigem Härteverlauf
(ISO 4498-1:1990)
Matériaux métalliques frittés a l'exclusion des métaux-durs - Détermination de la dureté
apparente - Partie 1: Matériaux ayant essentiellement une dureté uniforme dans la
section (ISO 4498-1:1990)
Ta slovenski standard je istoveten z: EN 24498-1:1993
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.160 Metalurgija prahov Powder metallurgy
SIST EN 24498-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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INTERNATIONAL
STANDARD
Second edition
1990-08-0 1
Sintered metal materials, excluding
hardmetals - Determination of apparent
hardness -
Part 1:
Materials of essentially uniform section hardness
Mat&iaux m6talliques frittbs 2 I’exclusion des metaux-durs -
Determination de la durete apparente -
Partie 1: Matkriaux ayant essentiellement une durete uniforme dans la
section
Reference number
ISO 44984 : 1990( E)

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ISO 4498=1:1990(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. Esch 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 patt 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 Interna-
tional Standard requires approval by at least 75 % of the member bodies
casting a vote.
International Standard ISO 4498-1 was prepared by Technical Committee
ISO/TC 119, Powder metallurgy.
This second edition cancels and replaces the first edition
(ISO 4498-1:1978), of which it constitutes a minor technical revision.
ISO 4498 consists of the following Parts, under the general title Sintered
metal materials, excluding hardmetals - Determination of apparent
hardness:
- Part 1: Materials of essentia/ly uniform secfion hardness
- Part 2: Cas e-harden ed ferrous materials, surface enriched by car-
bon or carb on and n li trogen
-
Part 3: Materials with hardened surfaces obtained by treatments
other than those of ISO 4498-2
Annex A forms an integral part of this patt of ISO 4498.
0 ISO 1990
All rights reserved. No part of this publication may be reproduced or utiiized in any form
or by any means, electronie or mechanical, including photocopying and microfilm, without
Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii

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ISO 4498=1:1990(E)
Introduction
The hardness value obtained by testing a sintered metal material with
Brinell, Rockwell and Vickers test equipment is called the apparent
hardness. Since the Sample is a composite of solid material and pores,
the hardness value is usually lower than that of solid material of the
Same composition and metallurgical condition. However, this does not
imply that the functional characteristics (for example wear resistance)
are necessarily inferior to those of an equivalent full-density material.
. . .
Ill

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INTERNATIONAL STANDARD
ISO 4498=1:1990(E)
Sintered metal materials, excluding hardmetals -
Determination of apparent hardness -
Part 1:
Materials of essentially uniform section hardness
ISO 6508:1986, Metallic materials - Hardness test -
1 Scope
Rockwell test (scales A - 0 - C - D - E - F - G - H -
.
w
This part of ISO 4498 specifies methods of hardness
testing of sintered metal materials.
3 Apparatus
lt applies to
a) sintered materiais which have not been sub- The test equipment shall be in accordance with
ISO 6506, ISO 6507-1 or ISO 6508.
jected to heat treatment:
b) sintered materials heat treated in such a way
4 Sampling and preparation of test pieces
that the hardness is essentially uniform to a
depth of at least 5 mm below the surface.
4.1 Since the apparent hardness of a sintered ma-
NOTE 1 Sinter-ed metal materials which, because of a
terial depends on the density, which tan vary
surface treatment, for example case hardening, do not
throughout a patt, the Position of the hardness in-
conform with requireme
...