EN ISO 9443:2018
(Main)Surface quality classes for hot-rolled bars and wire rod (ISO 9443:2018)
Surface quality classes for hot-rolled bars and wire rod (ISO 9443:2018)
This document specifies technical delivery requirements for the surface quality of round bars, squares, hexagons and wire rod in the hot rolled condition with nominal dimensions dN from 5 mm to 200 mm. This document is applicable to bright products and tool steels, if agreed at the time of enquiry and order between manufacturer and purchaser.
By agreement between manufacturer and purchaser, this document can also be applied to other special profiles.
This document is particularly applicable to steels for engineering and structural applications.
This document does not include any requirements for the permissible depth of surface decarburization.
NOTE The determination of depth of surface decarburization is presented in ISO 3887.
The material standards for steel bars and wire rod can exclude the application of one or other of the surface quality classes of this document. They can also cover requirements for surface quality which deviate from this document. In these cases the requirements of the material standard prevail.
Oberflächengüteklassen für warmgewalzten Stabstahl und Walzdraht (ISO 9443:2018)
Dieses Dokument enthält die technischen Lieferbedingungen für die Oberflächengüteklassen für Rundstäbe, Vierkantstäbe, Sechskantstäbe und Walzdraht im warmgewalzten Zustand mit Nenndurchmessern dN von 5 mm bis 200 mm. Dieses Dokument kann auch für Blankstahl und Werkzeugstahl herangezogen werden, sofern dies zum Zeitpunkt der Anfrage und Bestellung zwischen Hersteller und Besteller vereinbart war.
Nach Vereinbarung zwischen Hersteller und Besteller kann dieses Dokument auf andere Sonderprofilformen angewendet werden.
Dieses Dokument gilt vor allem für Stähle, die im Maschinenbau und im Bauwesen angewendet werden.
Dieses Dokument enthält keine Anforderungen an die zulässige Tiefe der Randentkohlung.
ANMERKUNG Die Bestimmung der Tiefe der Randentkohlung ist in ISO 3887 beschrieben.
Die Normen für die Lieferbedingungen für Stabstahl und Walzdraht können die Anwendung einzelner Oberflächengüteklassen dieses Dokumentes ausschließen. Dies können ebenfalls Anforderungen an die Oberflächenqualität sein, die von diesem Dokument abweichen. In diesen Fällen gelten die Anforderungen in den Normen für die Lieferbedingungen.
Classes de qualité de surface des barres et fils-machine laminés à chaud (ISO 9443:2018)
Le présent document spécifie les spécifications techniques de livraison relatives à la qualité de surface des barres de section ronde, carrée, hexagonale et du fil machine en acier laminé à chaud avec des dimensions nominales dN compris entre 5 mm et 200 mm. Le présent document est applicable aux produits transformés à froid et aux aciers à outils, si cela est convenu au moment de l'appel d'offres et de la commande entre le fabricant et l'acheteur.
Par accord entre le fabricant et l'acheteur, le présent document peut également être appliquée à d'autres profilés spéciaux.
Le présent document est plus particulièrement applicable aux aciers à usages mécaniques, et aux aciers de construction.
Le présent document ne renferme aucune spécification relative à la profondeur admissible de décarburation.
NOTE La détermination de la profondeur de décarburation est décrite dans l'ISO 3887.
Les normes de matériaux pour barres et fil machine en acier peuvent exclure l'utilisation de l'une quelconque des classes de qualité de surface prévues dans le présent document. Elles peuvent également renfermer des spécifications pour la qualité de surface divergentes par rapport à ce présent document. Dans ce cas, les spécifications de la norme de matériau prévalent.
Kakovostni razredi površin vroče valjanih drogov in valjane žice (ISO 9443:2018)
Ta mednarodni standard določa tehnične dobavne zahteve za kakovost površin okroglih, kvadratnih in šesterokotnih drogov ter valjane žice v vroče valjanem stanju z nazivnimi premeri dN od 5 mm do 200 mm. Na podlagi dogovora med proizvajalcem in kupcem se ta mednarodni standard lahko uporablja tudi za druge posebne profile. Ta mednarodni standard se uporablja zlasti za jekla, namenjena za gradbeno in konstrukcijsko uporabo, po dogovoru pa se lahko uporablja tudi za orodna jekla.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2018
1DGRPHãþD
SIST EN 10221:1998
.DNRYRVWQLUD]UHGLSRYUãLQYURþHYDOMDQLKGURJRYLQYDOMDQHåLFH ,62
Surface quality classes for hot-rolled bars and wire rod (ISO 9443:2018)
Oberflächengüteklassen für warmgewalzten Stabstahl und Walzdraht (ISO 9443:2018)
Classes de qualité de surface des barres et fils-machine laminés à chaud (ISO
9443:2018)
Ta slovenski standard je istoveten z: EN ISO 9443:2018
ICS:
77.140.60 Jeklene palice in drogovi Steel bars and rods
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 9443
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2018
EUROPÄISCHE NORM
ICS 77.140.20; 77.140.60; 77.140.10 Supersedes EN 10221:1995
English Version
Surface quality classes for hot-rolled bars and wire rod
(ISO 9443:2018)
Classes de qualité de surface des barres et fils-machine Oberflächengüteklassen für warmgewalzten Stabstahl
laminés à chaud (ISO 9443:2018) und Walzdraht (ISO 9443:2018)
This European Standard was approved by CEN on 23 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 9443:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 9443:2018) has been prepared by Technical Committee ISO/TC 17 "Steel" in
collaboration with Technical Committee ECISS/TC 105 “Steels for heat treatment, alloy steels, free-
cutting steels and stainless steels” the secretariat of which is held by DIN.
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 January 2019, and conflicting national standards shall
be withdrawn at the latest by January 2019.
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 10221:1995.
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 9443:2018 has been approved by CEN as EN ISO 9443:2018 without any modification.
INTERNATIONAL ISO
STANDARD 9443
Second edition
2018-05
Surface quality classes for hot-rolled
bars and wire rod
Classes de qualité de surface des barres et fils-machine laminés à chaud
Reference number
ISO 9443:2018(E)
©
ISO 2018
ISO 9443:2018(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.
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Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 9443:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Ordering and designation . 2
4.1 Ordering . 2
4.2 Designation . 2
5 Requirements . 2
6 Testing . 2
6.1 General . 2
6.2 Test methods . 3
6.2.1 General. 3
6.2.2 Methods for the detection of discontinuities . 3
6.2.3 Methods for measuring the depth of discontinuities . 3
6.2.4 Production tests on trial batches . 4
7 Repairs . 4
Annex A (informative) Guideline for applying surface quality classes . 6
Bibliography . 7
ISO 9443:2018(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
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 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
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 the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 4, Heat
treatable and alloy steels.
This second edition cancels and replaces the first edition (ISO 9443:1991), which has been technically
revised.
The following changes have been made in comparison with the first edition:
— the surface quality classes 5 to 12 (12A) have been removed;
— the surface classes 1 to 4 have been kept and renamed A, B, D and E and an additional surface quality
class has been introduced as surface quality class C;
— the difference between shallow and sharp discontinuities has been removed due to the impracticality
to differentiate between the two;
— the admissible portion of defective material za and zb has been removed and only z has been kept.
iv © ISO 2018 – All rights reserved
INTERNATIONAL STANDARD ISO 9443:2018(E)
Surface quality classes for hot-rolled bars and wire rod
1 Scope
This document specifies technical delivery requirements for the surface quality of round bars, squares,
hexagons and wire rod in the hot rolled condition with nominal dimensions d from 5 mm to 200 mm.
N
This document is applicable to bright products and tool steels, if agreed at the time of enquiry and
order between manufacturer and purchaser.
By agreement between manufacturer and purchaser, this document can also be applied to other special
profiles.
This document is particularly applicable to steels for engineering and structural applications.
This document does not include any requirements for the permissible depth of surface decarburization.
NOTE The determination of depth of surface decarburization is presented in ISO 3887.
The material standards for steel bars and wire rod can exclude the application of one or other of the
surface quality classes of this document. They can also cover requirements for surface quality which
deviate from this document. In these cases the requirements of the material standard prevail.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6929, Steel products — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6929 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
delivery lot
quantity of steel of the same type and the same dimension ordered with the same requirements for the
surface quality and delivered at the same time, unless otherwise specified in the order or appropriate
product standard
3.2
discontinuity
geometric irregularity projecting inwards
3.3
imperfection
discontinuity (3.2) with a depth smaller than or equal to the specified limiting value which may be left
without repair
ISO 9443:2018(E)
3.4
defect
discontinuity (3.2) with a depth greater than the specified
...
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