EN ISO 204:2023
(Main)Metallic materials - Uniaxial creep testing in tension - Method of test (ISO 204:2023)
Metallic materials - Uniaxial creep testing in tension - Method of test (ISO 204:2023)
This document specifies the methods for:
a) uninterrupted creep tests with continuous monitoring of extension;
b) interrupted creep tests with periodic measurement of elongation;
c) stress rupture tests where normally only the time to fracture is measured;
d) a test to verify that a predetermined time can be exceeded under a given force, with the elongation or extension not necessarily being reported.
NOTE A creep test can be continued until fracture has occurred or it can be stopped before fracture.
Metallische Werkstoffe - Einachsiger Zeitstandversuch unter Zugbeanspruchung - Prüfverfahren (ISO 204:2023)
Dieses Dokument legt die Verfahren für:
a) nicht-unterbrochene Zeitstandversuche mit kontinuierlicher Dehnungsmessung;
b) unterbrochene Zeitstandversuche mit periodischer Verlängerungsmessung;
c) Zeitstandversuche, bei denen üblicherweise nur die Zeit bis zum Bruch gemessen wird;
d) eine Prüfung zum Nachweis, dass eine vorgeschriebene Zeit unter einer gegebenen Kraft überschritten werden kann, fest, wobei die Dehnung oder die Verlängerung nicht unbedingt erfasst wird.
ANMERKUNG Ein Zeitstandversuch kann fortgesetzt werden, bis ein Bruch aufgetreten ist, oder vor Auftreten des Bruchs abgebrochen wird.
Matériaux métalliques - Essai de fluage uniaxial en traction - Méthode d'essai (ISO 204:2023)
Le présent document spécifie les méthodes pour:
a) les essais de fluage ininterrompu avec surveillance continue de l’extension;
b) les essais de fluage interrompus avec mesurage périodique de l’allongement;
c) les essais de rupture sous contrainte lorsque seul le temps jusqu’à la rupture est normalement mesuré;
d) un essai pour vérifier qu’un temps prédéterminé peut être dépassé sous une force donnée, sans que l’allongement ou l’extension n’ait été nécessairement rapporté.
NOTE Un essai de fluage peut se poursuivre jusqu’à la rupture effective ou peut être arrêté avant la rupture.
Kovinski materiali - Preskušanje nesoosnega lezenja pri nategu - Metoda preskušanja (ISO 204:2023)
Ta dokument določa metode za:
a) neprekinjene preskuse lezenja z neprekinjenim spremljanjem razširitve;
b) prekinjene preskuse lezenja s periodičnimi meritvami raztezka;
c) preskuse zloma zaradi obremenitve, pri katerih se običajno meri samo čas do preloma;
d) preskus za potrditev, da je mogoče pri dani sili preseči predhodno določeni čas, pri čemer se ne poroča nujno o raztezku ali razširitvi.
OPOMBA: Preskus lezenja je mogoče nadaljevati, dokler ne pride do preloma, mogoče pa ga je tudi ustaviti pred prelomom.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2023
Kovinski materiali - Preskušanje nesoosnega lezenja pri nategu - Metoda
preskušanja (ISO 204:2023)
Metallic materials - Uniaxial creep testing in tension - Method of test (ISO 204:2023)
Metallische Werkstoffe - Einachsiger Zeitstandversuch unter Zugbeanspruchung -
Prüfverfahren (ISO 204:2023)
Matériaux métalliques - Essai de fluage uniaxial en traction - Méthode d'essai (ISO
204:2023)
Ta slovenski standard je istoveten z: EN ISO 204:2023
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.
EN ISO 204
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2023
EUROPÄISCHE NORM
ICS 77.040.10 Supersedes EN ISO 204:2018
English Version
Metallic materials - Uniaxial creep testing in tension -
Method of test (ISO 204:2023)
Matériaux métalliques - Essai de fluage uniaxial en Metallische Werkstoffe - Einachsiger Zeitstandversuch
traction - Méthode d'essai (ISO 204:2023) unter Zugbeanspruchung - Prüfverfahren (ISO
204:2023)
This European Standard was approved by CEN on 25 June 2023.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 204:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 204:2023) has been prepared by Technical Committee ISO/TC 164 "Mechanical
testing of metals" in collaboration with Technical Committee CEN/TC 459/SC 1 “Test methods for steel
(other than chemical analysis)” 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 February 2024, and conflicting national standards
shall be withdrawn at the latest by February 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 204:2018.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 204:2023 has been approved by CEN as EN ISO 204:2023 without any modification.
INTERNATIONAL ISO
STANDARD 204
Fourth edition
2023-07
Metallic materials — Uniaxial creep
testing in tension — Method of test
Matériaux métalliques — Essai de fluage uniaxial en traction —
Méthode d'essai
Reference number
ISO 204:2023(E)
ISO 204:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
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Email: copyright@iso.org
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Published in Switzerland
ii
ISO 204:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and designations . 6
5 Principle . 7
6 Apparatus . 8
6.1 Testing machine . 8
6.2 Extension and elongation measuring devices . 8
6.2.1 Extension measuring device . 8
6.2.2 Elongation measuring device . 9
6.3 Heating device, temperature measuring equipment and calibration . 9
6.3.1 Permissible temperature deviations . 9
6.3.2 Temperature measurement . 10
6.3.3 Thermocouples . 11
6.3.4 Calibration of the thermocouples . 11
7 Test pieces .12
7.1 Shape and dimensions . 12
7.1.1 Shape and dimension of smooth test pieces .12
7.1.2 Shape and dimension of notched test pieces .13
7.2 Preparation . 13
7.3 Determination of the original cross-sectional area . 13
7.4 Marking of the original gauge length, L . 14
o
7.5 Determination of the reference length, L . 14
r
8 Test procedure .15
8.1 Heating of the test piece .15
8.2 Application of the test force . 15
8.3 Test interruptions . 16
8.3.1 Planned interruptions of the test . 16
8.3.2 Multiple test piece machine with several test pieces in line . 16
8.3.3 Combined test . 16
8.3.4 Accidental interruption of the test . 16
8.4 Recording of temperature and elongation or extension . 16
8.4.1 Temperature . 16
8.4.2 Elongation and extension . 16
8.4.3 Elongation-time curve or extension-time curve . 17
9 Determination of results .17
10 Test validity .17
11 Accuracy of the results .17
11.1 Expression of the results . 17
11.2 Final uncertainty . 18
12 Test report .18
Annex A (informative) Information concerning drift of thermocouples .23
Annex B (informative) Information concerning methods of calibration of thermocouples .26
Annex C (normative) Creep testing using test pieces with V or blunt circumferential
notches . .27
iii
ISO 204:2023(E)
Annex D (informative) Method of estimating the uncertainty of the measurement in
accordance with the Guide to the expression of uncertainty in measurement (GUM) .30
Annex E (informative) Represent
...
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