prEN ISO 179-1
(Main)Plastics - Determination of Charpy impact properties - Part 1: Non-instrumented impact test (ISO/DIS 179-1:2025)
Plastics - Determination of Charpy impact properties - Part 1: Non-instrumented impact test (ISO/DIS 179-1:2025)
This document specifies a method for determining the Charpy impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, the type of test specimen and the type of notch.
The method can be used to investigate the behaviour of specified types of specimen under the impact conditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. It can also be used for the determination of comparative data from similar types of material.
Kunststoffe - Bestimmung der Charpy-Schlageigenschaften - Teil 1: Nicht instrumentierte Schlagzähigkeitsprüfung (ISO/DIS 179‑1:2025)
Plastiques - Détermination des caractéristiques au choc Charpy - Partie 1: Essai de choc non instrumenté (ISO/DIS 179-1:2025)
Le présent document spécifie une méthode de détermination de la résistance au choc Charpy des plastiques dans des conditions définies. De nombreux types d’éprouvettes et de configurations d’essai différents sont définis. Divers paramètres d’essai sont spécifiés selon le type de matière, le type d’éprouvette et le type d’entaille.
La présente méthode peut être utilisée pour l’étude du comportement des types d’éprouvettes spécifiés soumises à des conditions de choc définies et pour l’estimation de la fragilité ou de la ténacité des éprouvettes dans les limites inhérentes aux conditions d’essai. Elle peut également être utilisée pour déterminer des résultats comparatifs propres à des types similaires de matériaux.
Polimerni materiali - Ugotavljanje udarne žilavosti po Charpyju - 1. del: Preskus udarne žilavosti z neinstrumentalno metodo (ISO/DIS 179-1:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Polimerni materiali - Ugotavljanje udarne žilavosti po Charpyju - 1. del: Preskus
udarne žilavosti z neinstrumentalno metodo (ISO/DIS 179-1:2025)
Plastics - Determination of Charpy impact properties - Part 1: Non-instrumented impact
test (ISO/DIS 179-1:2025)
Kunststoffe - Bestimmung der Charpy-Schlageigenschaften - Teil 1: Nicht instrumentierte
Schlagzähigkeitsprüfung (ISO/DIS 179-1:2025)
Plastiques - Détermination des caractéristiques au choc Charpy - Partie 1: Essai de choc
non instrumenté (ISO/DIS 179-1:2025)
Ta slovenski standard je istoveten z: prEN ISO 179-1
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 179-1
ISO/TC 61/SC 2
Plastics — Determination of Charpy
Secretariat: KATS
impact properties —
Voting begins on:
Part 1: 2025-05-15
Non-instrumented impact test
Voting terminates on:
2025-08-07
Plastiques — Détermination des caractéristiques au choc
Charpy —
Partie 1: Essai de choc non instrumenté
ICS: 83.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 179-1:2025(en)
DRAFT
ISO/DIS 179-1:2025(en)
International
Standard
ISO/DIS 179-1
ISO/TC 61/SC 2
Plastics — Determination of Charpy
Secretariat: KATS
impact properties —
Voting begins on:
Part 1:
Non-instrumented impact test
Voting terminates on:
Plastiques — Détermination des caractéristiques au choc
Charpy —
Partie 1: Essai de choc non instrumenté
ICS: 83.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 179-1:2025(en)
ii
ISO/DIS 179-1:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
5.1 Test machine .3
5.2 Micrometers and gauges .3
6 Test specimens . 4
6.1 Preparation .4
6.1.1 Moulding and extrusion compounds .4
6.1.2 Sheets .4
6.1.3 Long-fibre-reinforced materials . .4
6.1.4 Checking . .6
6.1.5 Notching .7
6.2 Anisotropy .7
6.3 Shape and dimensions .7
6.3.1 Materials not exhibiting interlaminar shear fracture .7
6.3.2 Materials exhibiting interlaminar shear fracture (e.g. long-fibre-reinforced
materials) .9
6.4 Number of test specimens .9
6.5 Span between specimen supports, L . .10
6.6 Conditioning.11
7 Procedure .11
8 Calculation and expression of results .12
8.1 Unnotched specimens . 12
8.2 Notched specimens . 12
8.3 Statistical parameters. 12
8.4 Significant figures. 12
9 Precision .12
10 Test report .12
Annex A (informative) Additional methods for investigating the influence of surface effects .15
Annex B (informative) Precision data . 17
Annex C (informative) Determining the notch tip radius using a CCD microscope . 19
Bibliography .22
iii
ISO/DIS 179-1:2025(en)
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical
behavior, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 179-1:2023), which has been technically
revised.
The main change is as follow:
— Replaced the correct dimensions of specimen type 3 in Table 1 (see 6.3.1.1).
A list of all parts in the ISO 179 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO/DIS 179-1:2025(en)
Introduction
The Charpy impact properties determination method described in the ISO 179 series has a greate
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.