EN ISO 683-7:2024

SLOVENSKI STANDARD
01-december-2024
Toplotno obdelana, legirana in avtomatna jekla -7. del: Svetli izdelki iz nelegiranih
in legiranih jekel (ISO 683-7:2023)
Heat-treatable steels, alloy steels and free-cutting steels - Part 7: Bright products of non-
alloy and alloy steels (ISO 683-7:2023)
Für eine Wärmebehandlung bestimmte Stähle, legierte Stähle und Automatenstähle -
Teil 7: Blankstahlerzeugnisse aus unlegierten und legierten Stählen (ISO 683-7:2023)
Aciers pour traitement thermique, aciers alliés et aciers pour décolletage - Partie 7:
Produits en aciers non alliés et alliés transformés à froid (ISO 683-7:2023)
Ta slovenski standard je istoveten z: EN ISO 683-7:2024
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.20 Visokokakovostna jekla Stainless steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 683-7
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2024
EUROPÄISCHE NORM
ICS 77.140.10; 77.140.20; 77.140.45 Supersedes EN 10277:2018
English Version
Heat-treatable steels, alloy steels and free-cutting steels -
Part 7: Bright products of non-alloy and alloy steels (ISO
683-7:2023)
Aciers pour traitement thermique, aciers alliés et Für eine Wärmebehandlung bestimmte Stähle, legierte
aciers pour décolletage - Partie 7: Produits en aciers Stähle und Automatenstähle - Teil 7:
non alliés et alliés transformés à froid (ISO 683- Blankstahlerzeugnisse aus unlegierten und legierten
7:2023) Stählen (ISO 683-7:2023)
This European Standard was approved by CEN on 13 October 2024.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 683-7:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 683-7:2023 has been prepared by Technical Committee ISO/TC 17 "Steel" of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 683-7:2024 by
Technical Committee CEN/TC 459/SC 5 “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 April 2025, and conflicting national standards shall be
withdrawn at the latest by April 2025.
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 10277:2018.
The main changes compared to the previous edition EN 10277:2018 are listed below:
— this standard EN ISO 683-7 is the comparable ISO standard with nearly identical content;
— editorially revised.
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 683-7:2023 has been approved by CEN as EN ISO 683-7:2024 without any modification.
The European steel numbers to the steel grades are to be found in informative Annex E.
The references to following European standards are given for information:
EN 10025-2, Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy
structural steels
EN 10027-1, Designation systems for steels - Part 1: Steel name
EN 10027-2, Designation systems for steels - Part 2: Numerical system
EN 10079, Definition of steel products
EN 10204, Metallic products - Types of inspection documents
EN 10247, Micrographic examination of the non-metallic inclusion content of steels using standard
pictures
INTERNATIONAL ISO
STANDARD 683-7
First edition
2023-11
Heat-treatable steels, alloy steels and
free-cutting steels —
Part 7:
Bright products of non-alloy and alloy
steels
Aciers pour traitement thermique, aciers alliés et aciers pour
décolletage —
Partie 7: Produits en aciers non alliés et alliés transformés à froid
Reference number
ISO 683-7:2023(E)
ISO 683-7:2023(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
Website: www.iso.org
Published in Switzerland
ii
ISO 683-7:2023(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification and designation . 3
4.1 Classification . 3
4.2 Designation . 3
5 Information to be supplied by the purchaser . 3
5.1 Mandatory information . 3
5.2 Options/Supplementary or special requirements . 4
5.3 Ordering example. 4
6 Manufacturing process . 5
6.1 General . 5
6.2 Treatment and surface condition at delivery . 5
6.2.1 Treatment condition . 5
6.2.2 Surface conditions . 5
6.3 Traceability of the cast . 5
7 Requirements . 5
7.1 General . 5
7.2 Chemical composition . 5
7.3 Mechanical properties . 6
7.4 Hardenability . 6
7.5 Machinability . 6
7.6 Grain size . 7
7.7 Non-metallic inclusions . 7
7.7.1 Microscopic inclusions . 7
7.7.2 Macroscopic inclusions . 7
7.8 Internal soundness . 7
7.9 Decarburization . . 7
7.10 Shape, dimensions and tolerances . 7
7.11 Surface quality . 8
8 Inspection . 8
8.1 Testing procedures and types of documents. 8
8.2 Frequency of testing . 9
8.3 Specific inspection and testing . 10
8.3.1 Verification of the hardenability, hardness and mechanical properties . 10
8.3.2 Visual and dimensional inspection . 11
9 Test methods .
...