EN ISO 898-3:2018

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 3: Flat washers with specified property classes (ISO 898-3:2018)

This document specifies mechanical and physical properties of flat washers, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with a specified property class in accordance with ISO 898‑1 and ISO 898‑2.
NOTE 1    These types of washers can also be used with other fasteners such as screws forming their own mating thread.
Washers that conform to the requirements of this document are evaluated at an ambient temperature range of 10 °C to 35 °C. They might not retain the specified mechanical and physical properties at elevated temperatures and/or lower temperatures.
NOTE 2    Washers conforming to the requirements of this document are used in applications ranging from −50 °C to +150 °C. Users are advised to consult an experienced fastener expert for temperatures outside this range and up to a maximum temperature of +300 °C when determining appropriate choices, or for critical applications.
This document is applicable to the following flat captive and non-captive washers made of carbon steel or alloy steel, with thickness from 0,2 mm to 12 mm:
—          plain washers (with or without knurls, ribs or chamfers);
—          square washers;
—          square hole washers;
—          shaped plates.
It does not specify requirements for the following properties:
—          corrosion resistance;
—          weldability.

Mechanische Eigenschaften von Verbindungselementen aus Kohlenstoffstahl und legiertem Stahl - Teil 3: Flache Scheiben mit festgelegten Festigkeitsklassen (ISO 898-3:2018)

Dieses Dokument legt mechanische und physikalische Eigenschaften von flachen Scheiben fest, die für Schraubverbindungen in Kombination mit Schrauben und Muttern entsprechend der in ISO 898-1 und ISO 898-2 festgelegten Festigkeitsklasse vorgesehen sind.
ANMERKUNG 1 Diese Arten von Scheiben können auch mit anderen Verbindungselementen verwendet werden, z. B. mit gewindefurchenden Schrauben.
Scheiben, die die Anforderungen dieses Dokumentes erfüllen, werden bei einem Raumtemperaturbereich von 10 °C bis 35 °C bewertet. Es könnte sein, dass sie bei erhöhten Temperaturen und/oder niedrigeren Temperaturen nicht die festgelegten mechanischen und physikalischen Eigenschaften beibehalten.
ANMERKUNG 2 Scheiben, die die Anforderungen dieses Dokumentes erfüllen, werden in Anwendungen im Bereich von −50 °C bis +150 °C verwendet. Für Temperaturen außerhalb dieses Bereiches und bis zu einer Höchsttemperatur von +300 °C wird den Benutzern empfohlen, bei der Ermittlung der geeigneten Auswahl oder bei kritischen Anwendun-gen einen erfahrenen Fachmann für Verbindungselemente hinzuzuziehen.
Dieses Dokument ist bei den folgenden flachen unverlierbaren und verlierbaren Scheiben aus Kohlenstoff-stahl oder legiertem Stahl mit einer Dicke von 0,2 mm bis 12 mm anwendbar:
— einfache Scheiben (mit oder ohne Rändelung, Rippen oder Fasen);
— Vierkantscheiben;
— Scheiben mit Vierkantloch;
— Formbleche.
Es legt keine Anforderungen an folgende Eigenschaften fest:
— Korrosionsbeständigkeit;
— Schweißbarkeit.

Caractéristiques mécaniques des fixations en acier au carbone et en acier allié - Partie 3: Rondelles de forme plane de classes de qualité spécifiées (ISO 898-3:2018)

Le présent document spécifie les caractéristiques mécaniques et physiques des rondelles de forme plane, conçues pour être utilisées dans des assemblages vissés en combinaison avec des vis, des goujons, des tiges filetées et des écrous de classes de qualité spécifiées conformément à l'ISO 898-1 et à l'ISO 898-2.
NOTE 1    Ces types de rondelles peuvent être utilisés également avec d'autres fixations, telles que les vis formant leur propre filetage.
Les rondelles conformes aux exigences du présent document sont évaluées dans la plage de température ambiante de 10 °C à 35 °C. Elles peuvent ne pas conserver les caractéristiques mécaniques et physiques spécifiées à des températures élevées et/ou à des températures basses.
NOTE 2    Les rondelles conformes aux exigences du présent document sont utilisées pour des applications dans la plage de température de − 50 °C à + 150 °C. Il est conseillé aux utilisateurs de consulter un spécialiste expérimenté en fixations pour des températures en dehors de cette plage et jusqu'à une température maximale de + 300 °C, afin de déterminer les choix appropriés, ou pour des applications critiques.
Le présent document s'applique aux rondelles de forme plane suivantes, imperdables ou libres, en acier au carbone ou en acier allié, d'épaisseur de 0,2 mm à 12 mm:
—          rondelles plates (striées ou non striées, crantées ou non crantées, ou avec ou sans chanfreins);
—          rondelles carrées;
—          rondelles à trou carré;
—          plaquettes de forme spéciale.
Il ne spécifie pas d'exigence pour les caractéristiques suivantes:
—          la résistance à la corrosion;
—          la soudabilité.

Mehanske lastnosti veznih elementov, narejenih iz ogljikovega jekla in jeklene zlitine - 3. del: Ploščate podložke z določenimi razredi trdnosti (ISO 898-3:2018)

Ta del standarda ISO 898 določa mehanske in fizikalne lastnosti ploščatih podložk, namenjenih za uporabo v vijačnih spojih v kombinaciji s sorniki, vijaki, zatiči ter maticami z določenim razredom trdnosti v skladu s standardoma ISO 898-1 in ISO 898-2. Podložke, skladne z zahtevami iz tega dela standarda ISO 898, so ocenjene pri sobni temperaturi od 10 °C do 35 °C. Te podložke se uporabljajo pri nizkih ali visokih temperaturah, pri čemer je najvišja temperatura 300 °C. Ta del standarda ISO 898 se uporablja za spodaj navedene ploščate robljene podložke in tiste, ki niso robljene, izdelane iz ogljikovega jekla, jeklene zlitine, vzmetnega jekla ali zlitine vzmetnega jekla, z debelino od 0,2 mm do 12 mm: – ploščate podložke (z rebričenjem/posnetji ali brez njih); – kvadrataste podložke; – podložke s kvadratno odprtino; – oblikovane plošče. Ta standard ne določa zahtev za lastnosti, kot sta: – korozijska odpornost; – varivost.

General Information

• Status: Published
• Publication Date: 26-Jun-2018
• Withdrawal Date: 30-Dec-2018
• ICS: 21.060.20 - Nuts
• Technical Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Drafting Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Jun-2018
• Completion Date: 27-Jun-2018
• Ref Project: SIST EN ISO 898-3:2018 - Mechanical properties of fasteners made of carbon steel and alloy steel - Part 3: Flat washers with specified property classes (ISO 898-3:2018)

Relations

• Amended By: EN ISO 898-3:2018/A1:2021 - Mechanical properties of fasteners made of carbon steel and alloy steel - Part 3: Flat washers with specified property classes - Amendment 1 (ISO 898-3:2018/Amd 1:2020)
• Effective Date: 02-Oct-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2018
0HKDQVNHODVWQRVWLYH]QLKHOHPHQWRYQDUHMHQLKL]RJOMLNRYHJDMHNODLQMHNOHQH
]OLWLQHGHO3ORãþDWHSRGORåNH]GRORþHQLPLUD]UHGLWUGQRVWL,62
Mechanical properties of fasteners made of carbon steel and alloy steel - Part 3: Flat
washers with specified property classes (ISO 898-3:2018)
Mechanische Eigenschaften von Verbindungselementen aus Kohlenstoffstahl und
legiertem Stahl - Teil 3: Scheiben (ISO 898-3:2018)
Caractéristiques mécaniques des fixations en acier au carbone et en acier allié - Partie
3: Rondelles de forme plane de classes de qualité spécifiées (ISO 898-3:2018)
Ta slovenski standard je istoveten z: EN ISO 898-3:2018
ICS:
21.060.30 Podložke, varovalni elementi Washers, locking elements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 898-3
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2018
EUROPÄISCHE NORM
ICS 21.060.20
English Version
Mechanical properties of fasteners made of carbon steel
and alloy steel - Part 3: Flat washers with specified
property classes (ISO 898-3:2018)
Caractéristiques mécaniques des fixations en acier au Mechanische Eigenschaften von
carbone et en acier allié - Partie 3: Rondelles de forme Verbindungselementen aus Kohlenstoffstahl und
plane de classes de qualité spécifiées (ISO 898-3:2018) legiertem Stahl - Teil 3: Flache Scheiben mit
festgelegten Festigkeitsklassen (ISO 898-3:2018)
This European Standard was approved by CEN on 16 May 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 898-3:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 898-3:2018) has been prepared by Technical Committee ISO/TC 2 "Fasteners"
in collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by
BSI.
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 2018, and conflicting national standards
shall be withdrawn at the latest by December 2018.
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.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 898-3:2018 has been approved by CEN as EN ISO 898-3:2018 without any modification.

INTERNATIONAL ISO
STANDARD 898-3
First edition
2018-05
Mechanical properties of fasteners
made of carbon steel and alloy steel —
Part 3:
Flat washers with specified property
classes
Caractéristiques mécaniques des fixations en acier au carbone et en
acier allié —
Partie 3: Rondelles de forme plane de classes de qualité spécifiées
Reference number
ISO 898-3:2018(E)
©
ISO 2018
ISO 898-3:2018(E)
© ISO 2018
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.
ISO copyright office
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Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 898-3:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 2
5 Designation system for property classes of washers and combination with property
classes of bolts, screws, studs and nuts . 2
6 Materials . 3
7 Mechanical and physical properties . 4
8 Test methods . 5
8.1 Hardness test . 5
8.1.1 General. 5
8.1.2 Hardness test on the washer bearing surface. 6
8.1.3 Hardness determined on a transverse radial section through the washer . 9
8.2 Decarburization test .10
8.2.1 General.10
8.2.2 Microscopic method . .10
8.2.3 Hardness method .11
8.3 Carburization test .12
8.3.1 General.12
8.3.2 Test procedure .12
8.3.3 Requirements .12
8.4 Retempering test .12
8.4.1 General.12
8.4.2 Test procedure .12
8.4.3 Requirements .12
9 Marking .13
9.1 General .13
9.2 Marking of washers .13
9.3 Marking of packages .13
Annex A (normative) Ductility test for washers of property class 380HV .14
Bibliography .17
ISO 898-3:2018(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
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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 documents 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).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
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URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 2, Fasteners.
A list of all parts in the ISO 898 series can be found on the ISO website.
iv © ISO 201
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