SIST EN ISO 683-5:2021
(Main)Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels (ISO 683-5:2017)
Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels (ISO 683-5:2017)
This document gives the technical delivery requirements for
— semi-finished products, e.g. blooms, billets, slabs (see note 1),
— bars (see note 1),
— wire rod,
— hot-rolled plates (see note 2), and
— hammer or drop forgings (see note 1)
manufactured from the nitriding steels listed in Table 3 and supplied in one of the heat-treatment conditions given for the different types of products in Table 1, rows 2 to 5, and in one of the surface conditions given in Table 2.
The steels are generally intended for the fabrication of quenched and tempered and, subsequently, nitriding machine parts.
Für eine Wärmebehandlung bestimmte Stähle, legierte Stähle und Automatenstähle - Teil 5: Nitrierstähle (ISO 683-5:2017)
Dieses Dokument legt die Technischen Lieferbedingungen fest für:
- Halbzeug, zum Beispiel: Vorblöcke, Knüppel, Brammen (siehe Anmerkung 1),
- Stäbe (siehe Anmerkung 1),
- Walzdraht,
- warmgewalzte Bleche (siehe Anmerkung 2), und
- Freiform- oder Gesenkschmiedestücke (siehe Anmerkung 1).
aus den in Tabelle 3 aufgeführten Nitrierstählen, die in einem der für die verschiedenen Erzeugnisformen in Tabelle 1, Zeilen 2 bis 5 angegebenen Wärmebehandlungszustände und in einer der in Tabelle 2 angeführten Oberflächenausführungen geliefert werden.
Diese Stähle sind im Allgemeinen zur Herstellung vergüteter und anschließend nitrierter Maschinenteile vorgesehen.
Die Anforderungen an die mechanischen Eigenschaften nach diesem Dokument sind auf die in der Tabelle 6 angegebenen Größen beschränkt.
ANMERKUNG 1 Freiformgeschmiedete Halbzeuge (Blöcke, Knüppel, Brammen usw.), nahtlos gewalzte Ringe und freiform¬geschmiedeter Stabstahl sind im Folgenden unter den Begriffen „Halbzeug“ und „Stabstahl“ und nicht unter dem Begriff „Freiform- und Gesenkschmiedestücke“ erfasst.
ANMERKUNG 2 Der Begriff „Bleche“ schließt soweit nicht anders erwähnt auch den Begriff Breitflachstahl mit ein.
In Sonderfällen können bei der Anfrage und Bestellung Abweichungen von oder Zusätze zu diesen technischen Lieferbedingungen vereinbart werden (siehe 5.2 und Anhang B).
Zusätzlich zu diesem Dokument sind die allgemeinen technischen Lieferbedingungen nach ISO 404 anzuwenden.
Aciers pour traitement thermique, aciers alliés et aciers pour décolletage - Partie 5: Aciers pour nitruration (ISO 683-5:2017)
Le présent document fournit les conditions techniques de livraison des
— demi-produits, par exemple blooms, billettes, brames (voir Note 1),
— barres (voir Note 1),
— fil machine,
— tôles laminées à chaud (voir Note 2), et
— pièces forgées par martelage ou estampage (voir Note 1)
fabriqués à partir des aciers pour nitruration énumérés dans le Tableau 3 et livrés dans l’un des états de traitement thermique donnés pour les différents types de produits dans le Tableau 1, aux lignes 2 à 5, et dans l’un des états de surface donnés dans le Tableau 2.
Les aciers sont en général destinés à la fabrication de pièces mécaniques trempées et revenues, puis nitrurées.
Les exigences relatives aux caractéristiques mécaniques données dans le présent document sont limitées aux dimensions données dans le Tableau 6.
NOTE 1 Les demi-produits forgés par martelage (blooms, billettes, brames, etc.), les couronnes laminées sans soudure et les barres forgées par martelage figurent parmi les demi-produits ou les barres, et non sous l’appellation «pièces forgées par martelage et estampage».
NOTE 2 Le terme «tôle» comprend également les larges plats, sauf indication contraire.
Dans certains cas particuliers, il est possible de déroger aux présentes conditions techniques de livraison ou d’en ajouter d’autres, à condition d’en convenir au moment de l’appel d’offres et de la commande (voir 5.2 et Annexe B).
En complément du présent document, les conditions générales techniques de livraison de l’ISO 404 sont applicables.
Toplotno obdelana, legirana in avtomatna jekla - 5. del: Jekla za nitridiranje (ISO 683-5:2017)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 683-5:2021
01-julij-2021
Nadomešča:
SIST EN 10085:2002
Toplotno obdelana, legirana in avtomatna jekla - 5. del: Jekla za nitridiranje (ISO
683-5:2017)
Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels (ISO
683-5:2017)
Für eine Wärmebehandlung bestimmte Stähle, legierte Stähle und Automatenstähle -
Teil 5: Nitrierstähle (ISO 683-5:2017)
Aciers pour traitement thermique, aciers alliés et aciers pour décolletage - Partie 5:
Aciers pour nitruration (ISO 683-5:2017)
Ta slovenski standard je istoveten z: EN ISO 683-5:2021
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.20 Visokokakovostna jekla Stainless steels
SIST EN ISO 683-5:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 683-5:2021
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SIST EN ISO 683-5:2021
EN ISO 683-5
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 77.140.10; 77.140.20 Supersedes EN 10085:2001
English Version
Heat treatable steels, alloy steels and free-cutting steels -
Part 5: Nitriding steels (ISO 683-5:2017)
Aciers pour traitement thermique, aciers alliés et Für eine Wärmebehandlung bestimmte Stähle, legierte
aciers pour décolletage - Partie 5: Aciers pour Stähle und Automatenstähle - Teil 5: Nitrierstähle (ISO
nitruration (ISO 683-5:2017) 683-5:2017)
This European Standard was approved by CEN on 9 May 2021.
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, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 683-5:2021 E
worldwide for CEN national Members.
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SIST EN ISO 683-5:2021
EN ISO 683-5:2021 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 683-5:2021
EN ISO 683-5:2021 (E)
European foreword
The text of ISO 683-5:2017 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 683-5:2021 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 November 2021, and conflicting national standards
shall be withdrawn at the latest by November 2021.
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 10085:2001.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 683-5:2017 has been approved by CEN as EN ISO 683-5:2021 without any modification.
The European steel numbers to the steel grades are to be found in informative Annex C.
The references to following European standards are given for information:
EN 10017, Steel rod for drawing and/or cold rolling – Dimensions and tolerances
EN 10029, Hot-rolled steel plates 3 mm thick or above – Tolerances on dimensions and shape
EN 10048, Hot-rolled narrow steel strip – Tolerances on dimensions and shape
EN 10051, Continuously hot-rolled strip and plate/sheet cut from wide strip of non-alloy and alloy steels –
Tolerances on dimensions and shape
EN 10058, Hot rolled flat steel bars and steel wide flats for general purposes – Dimensions and tolerances
on shape and dimensions
EN 10059, Hot rolled square steel bars for general purposes – Dimensions and tolerances on shape and
dimensions
EN 10060, Hot rolled round steel bars - Dimensions and tolerances on shape and dimensions
EN 10061, Hot rolled hexagon steel bars – Dimensions and tolerances on shape and dimensions
EN 10108, Round steel rod for cold heading and cold extrusion - Dimensions and tolerances
3
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SIST EN ISO 683-5:2021
EN ISO 683-5:2021 (E)
EN 10140, Cold rolled narrow steel strip - Tolerances on dimensions and shape
EN 10160, Ultrasonic testing of steel flat product of thickness equal to or greater than 6 mm (reflection
method)
EN 10204, Metallic products - Types of inspection documents
EN 10308, Non-destructive testing – Ultrasonic testing of steel bars
4
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SIST EN ISO 683-5:2021
INTERNATIONAL ISO
STANDARD 683-5
Second edition
2017-07
Heat treatable steels, alloy steels and
free-cutting steels —
Part 5:
Nitriding steels
Aciers pour traitement thermique, aciers alliés et aciers pour
décolletage —
Partie 5: Aciers pour nitruration
Reference number
ISO 683-5:2017(E)
©
ISO 2017
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SIST EN ISO 683-5:2021
ISO 683-5:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 683-5:2021
ISO 683-5:2017(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. 3
5.3 Ordering example . 4
6 Manufacturing process . 4
6.1 General . 4
6.2 Deoxidization . 4
6.3 Heat treatment and surface condition at delivery . 4
6.3.1 Normal condition at delivery . 4
6.3.2 Particular heat-treatment condition . . 4
6.3.3 Particular surface conditions . 4
6.4 Traceability of the cast . 4
7 Requirements . 4
7.1 Chemical composition, hardness and mechanical properties . 4
7.1.1 General. 4
7.1.2 Chemical composition . 5
7.1.3 Mechanical properties . 5
7.2 Machinability . 5
7.3 Cold shearability . 5
7.4 Grain size . 5
7.5 Non-metallic inclusions . 5
7.5.1 Microscopic inclusions . 5
7.5.2 Macroscopic inclusions . 5
7.6 Internal soundness . 5
7.7 Surface quality . 5
7.8 Decarburization . 6
7.9 Shape, dimensions and tolerances . 6
8 Inspection . 6
8.1 Testing procedures and types of documents . 6
8.2 Frequency of testing . 7
8.3 Specific inspection and testing . 7
8.3.1 Verification of the hardness and mechanical properties . 7
8.3.2 Visual and dimensional inspection . 7
9 Test methods . 7
9.1 Chemical analysis . 7
9.2 Hardness and mechanical tests . 7
9.2.1 Hardness . 7
9.2.2 Mechanical tests . 7
9.2.3 Impact test . 7
9.3 Retests . 8
10 Marking . 8
Annex A (normative) Ruling sections for mechanical properties .18
Annex B (normative) Supplementary or special requirements .22
© ISO 2017 – All rights reserved iii
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SIST EN ISO 683-5:2021
ISO 683-5:2017(E)
Annex C (informative) Designation of steels given in this document and of comparable
grades covered in various designation systems.24
Annex D (informative) Dimensional standards applicable to products complying with
this document .25
Bibliography .26
iv © ISO 2017 – All rights reserved
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SIST EN ISO 683-5:2021
ISO 683-5:2017(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: w w w . i s o .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 683-5:2014), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— in the Scope, “see 5.2” has been added as a cross reference;
— in 3.1, note 1 to entry has been revised;
— in 5.2, the ordering example has been moved into a new subclause, as 5.3;
— in 7.7.3, the surface class given has been changed from A to 1z2;
— in 9.2.3, the option for retesting has been revised;
— Figure 3 has been renamed as Table 9;
— in A.2.1, the cross references have been corrected to A.2.2 to A.2.4.
A list of all parts in the ISO 683 series can be found on the ISO website.
© ISO 2017 – All rights reserved v
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SIST EN ISO 683-5:2021
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SIST EN ISO 683-5:2021
INTERNATIONAL STANDARD ISO 683-5:2017(E)
Heat treatable steels, alloy steels and free-cutting steels —
Part 5:
Nitriding steels
1 Scope
This document gives the technical delivery requirements for
— semi-finished products, e.g. blooms, billets, slabs (see note 1),
— bars (see note 1),
— wire rod,
— hot-rolled plates (see note 2), and
— hammer or drop forgings (see note 1)
manufactured from the nitriding steels listed in Table 3 and supplied in one of the heat-treatment
conditions given for the different types of products in Table 1, rows 2 to 5, and in one of the surface
conditions given in Table 2.
The steels are generally intended for the fabrication of quenched and tempered and, subsequently,
nitriding machine parts.
The requirements for mechanical properties given in this document are restricted to the sizes given in
Table 6.
NOTE 1 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and
hammer-forged bars are in the following covered under semi-finished products or bars and not under the term
“hammer and drop forgings”.
NOTE 2 The term “plate” includes in the following also wide flats unless otherwise stated.
In special cases, variations in these technical delivery requirements or additions to these requirements
can form the subject of an agreement at the time of enquiry and order (see 5.2 and Annex B).
In addition to this document, the general technical delivery requirements of ISO 404 are applicable.
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 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing
ISO 404:2013, Steel and steel products — General technical delivery requirements
ISO 643, Steels — Micrographic determination of the apparent grain size
ISO 3887, Steels — Determination of depth of decarburization
ISO 4885, Ferrous materials — Heat treatments — Vocabulary
© ISO 2017 – All rights reserved 1
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SIST EN ISO 683-5:2021
ISO 683-5:2017(E)
ISO 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based
on chemical composition
ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main
quality classes and main property or application characteristics
ISO/TS 4949, Steel names based on letter symbols
ISO 4967, Steel — Determination of content of non-metallic inclusions — Micrographic method using
standard diagrams
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 6929, Steel products — Vocabulary
ISO 7788, Steel — Surface finish of hot-rolled plates and wide flats — Delivery requirements
ISO 9443, Heat-treatable and alloy steels — Surface quality classes for hot-rolled round bars and wire
rods — Technical delivery conditions
ISO/TR 9769, Steel and iron — Review of available methods of analysis
ISO 10474, Steel and steel products — Inspection documents
ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 377, ISO 4885, ISO 4948-1,
ISO 4948-2, ISO 6929 and ISO 14284 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
ruling section
section for which the specified mechanical properties shall apply
Note 1 to entry: Independent of the actual shape and dimensions of the cross-section of the product, the size of its
ruling section is always given by a diameter. This corresponds to the diameter of an “equivalent round bar”. That
is a round bar which will show the same cooling rate as the actual ruling section of the product concerned at its
position for taking the test pieces when being cooled from austenitizing temperature.
3.2
nitriding steel
heat-treatable steel containing controlled amounts of the nitride forming elements, aluminium,
chromium, molybdenum and/or vanadium and are particularly suited for nitriding
3.3
nitriding
heat treatment characterized by keeping a steel product for a sufficiently long time at temperatures
below the transformation temperature AC1 in a nitrogen providing gaseous or liquid salt environment
to achieve diffusion of the nitrogen into the steel surface
Note 1 to entry: An increase in surface hardness, wear resistance and fatigue properties is attained with this
treatment.
2 © ISO 2017 – All rights reserved
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SIST EN ISO 683-5:2021
ISO 683-5:2017(E)
4 Classification and designation
4.1 Classification
The classification of the relevant steel grades is allocated in accordance with ISO 4948-1 and ISO 4948-2.
All steels covered by this document are classified as alloy special steels.
4.2 Designation
For the steel grades covered by this document, the steel names as given in the relevant tables are
allocated in accordance with ISO/TS 4949.
The designation of steels given in this document and of comparable grades covered in various
designation systems is given in Annex C.
5 Information to be supplied by the purchaser
5.1 Mandatory information
The manufacturer shall obtain the following information from the purchaser at the time of enquiry
and order:
a) the quantity to be delivered;
b) the designation of the product form (e.g. slab, bloom, billet, round bar, wire rod);
c) either the designation of the dimensional standard and the dimensions and tolerances selected
from this (see 7.9) or the designation of the drawing or any other document covering the dimensions
and tolerances required for the product;
d) reference to this document, i.e. ISO 683-5;
e) the designation of the steel grade given in Table 3;
f) designation for a test report 2.2 or, if required, any other type of inspection document in accordance
with ISO 10474.
5.2 Options/supplementary or special requirements
A number of options are specified in this document and listed below in this subclause. If the purchaser
does not indicate the wish to implement any of these options, the products will be supplied in accordance
with the basic specification of this document (see 5.1):
a) if a heat-treatment condition other than the untreated condition is required, the symbol for this
other condition (see Table 1, column 2);
b) if another surface condition than hot worked or a special surface quality is required, the surface
condition (see Table 2, column 2) and the surface quality (see 7.7);
c) any supplementary requirement that shall be complied with, the symbol and, where necessary, the
details of this supplementary requirement (see Annex B);
d) any requirement relating to the removal of surface defects (see 7.7.4);
e) any requirement regarding the permissible depth of decarburization (see 7.8);
f) impact test at a temperature lower than room temperature (see 9.2.3).
© ISO 2017 – All rights reserved 3
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SIST EN ISO 683-5:2021
ISO 683-5:2017(E)
5.3 Ordering example
EXAMPLE 2 t hot-rolled round bars according to ISO 1035-1 with a nominal diameter of 40 mm and a nominal
length of 8 000 mm with diameter tolerance according to class S and with length tolerance according to class L2
made of steel grade ISO 683-5, 31CrMo12 (see Table 3) in heat-treatment condition +QT (see Table 1) with surface
blast cleaned +BC (see Table 2) and with an inspection document 2.2.
Round bars ISO 1035 - 40,0S × 8 000L2
ISO 683-5 - 31CrMo12+QT
inspection document ISO 10474 2.2
6 Manufacturing process
6.1 General
The manufacturing process of the steel and of the products is with the restrictions given by the
requirements in 6.2 and 6.4, left to the discretion of the manufacturer.
6.2 Deoxidization
All steels shall be deoxidized.
6.3 Heat treatment and surface condition at delivery
6.3.1 Normal condition at delivery
Unless otherwise agreed at the time of enquiry and order, the products shall be delivered in the
untreated, i.e. hot-worked condition.
6.3.2 Particular heat-treatment condition
If so agreed at the time of enquir
...
SLOVENSKI STANDARD
oSIST prEN ISO 683-5:2021
01-marec-2021
Toplotno obdelana, legirana in avtomatna jekla - 5. del: Jekla za nitridiranje (ISO
683-5:2017)
Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels (ISO
683-5:2017)
Für eine Wärmebehandlung bestimmte Stähle, legierte Stähle und Automatenstähle -
Teil 5: Nitrierstähle (ISO 683-5:2017)
Aciers pour traitement thermique, aciers alliés et aciers pour décolletage - Partie 5:
Aciers pour nitruration (ISO 683-5:2017)
Ta slovenski standard je istoveten z: prEN ISO 683-5
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.20 Visokokakovostna jekla Stainless steels
oSIST prEN ISO 683-5:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 683-5:2021
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oSIST prEN ISO 683-5:2021
DRAFT
EUROPEAN STANDARD
prEN ISO 683-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2021
ICS 77.140.10; 77.140.20 Will supersede EN 10085:2001
English Version
Heat treatable steels, alloy steels and free-cutting steels -
Part 5: Nitriding steels (ISO 683-5:2017)
Aciers pour traitement thermique, aciers alliés et Für eine Wärmebehandlung bestimmte Stähle, legierte
aciers pour décolletage - Partie 5: Aciers pour Stähle und Automatenstähle - Teil 5: Nitrierstähle (ISO
nitruration (ISO 683-5:2017) 683-5:2017)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 5.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Turkey and
United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
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© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 683-5:2021 E
worldwide for CEN national Members.
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oSIST prEN ISO 683-5:2021
prEN ISO 683-5:2021 (E)
Contents Page
European foreword . 3
2
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oSIST prEN ISO 683-5:2021
prEN ISO 683-5:2021 (E)
European foreword
The text of ISO 683-5:2017 has been prepared by Technical Committee ISO/TC 17 “Steel” of the
International Organization for Standardization (ISO) and has been taken over as prEN ISO 683-5:2021
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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 10085:2001.
Endorsement notice
The text of ISO 683-5:2017 has been approved by CEN as prEN ISO 683-5:2021 without any
modification.
The European steel numbers to the steel grades are to be found in informative Annex C.
The references to following European standards are given for information:
EN 10017, Steels rod for drawing and/or cold rolling – Dimensions and tolerances
EN 10029, Hot-rolled steel plates 3 mm thick or above – Tolerances on dimensions and shape
EN 10048, Hot-rolled narrow steel strip – Tolerances on dimensions and shape
EN 10051, continuously hot-rolled strip and plate/sheet cut from wide strip of non-alloy and alloy
steels – Tolerances on dimensions and shape
EN 10058, Hot rolled flat steel bars for general purposes – Dimensions and tolerances on shape and
dimensions
EN 10059, Hot rolled square steel bars for general purposes – Dimensions and tolerances on shape and
dimensions
EN 10060, Hot rolled round steel bars - Dimensions and tolerances on shape and dimensions
EN 10061, Hot rolled hexagon steel bars – Dimensions and tolerances on shape and dimensions
EN 10108, Round steel rod for cold heading and cold extrusion – Dimensions and tolerances
EN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection
method)
EN 10308, Non-destructive testing – Ultrasonic testing of steel bars
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oSIST prEN ISO 683-5:2021
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oSIST prEN ISO 683-5:2021
INTERNATIONAL ISO
STANDARD 683-5
Second edition
2017-07
Heat treatable steels, alloy steels and
free-cutting steels —
Part 5:
Nitriding steels
Aciers pour traitement thermique, aciers alliés et aciers pour
décolletage —
Partie 5: Aciers pour nitruration
Reference number
ISO 683-5:2017(E)
©
ISO 2017
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oSIST prEN ISO 683-5:2021
ISO 683-5:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
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copyright@iso.org
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ii © ISO 2017 – All rights reserved
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oSIST prEN ISO 683-5:2021
ISO 683-5:2017(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. 3
5.3 Ordering example . 4
6 Manufacturing process . 4
6.1 General . 4
6.2 Deoxidization . 4
6.3 Heat treatment and surface condition at delivery . 4
6.3.1 Normal condition at delivery . 4
6.3.2 Particular heat-treatment condition . . 4
6.3.3 Particular surface conditions . 4
6.4 Traceability of the cast . 4
7 Requirements . 4
7.1 Chemical composition, hardness and mechanical properties . 4
7.1.1 General. 4
7.1.2 Chemical composition . 5
7.1.3 Mechanical properties . 5
7.2 Machinability . 5
7.3 Cold shearability . 5
7.4 Grain size . 5
7.5 Non-metallic inclusions . 5
7.5.1 Microscopic inclusions . 5
7.5.2 Macroscopic inclusions . 5
7.6 Internal soundness . 5
7.7 Surface quality . 5
7.8 Decarburization . 6
7.9 Shape, dimensions and tolerances . 6
8 Inspection . 6
8.1 Testing procedures and types of documents . 6
8.2 Frequency of testing . 7
8.3 Specific inspection and testing . 7
8.3.1 Verification of the hardness and mechanical properties . 7
8.3.2 Visual and dimensional inspection . 7
9 Test methods . 7
9.1 Chemical analysis . 7
9.2 Hardness and mechanical tests . 7
9.2.1 Hardness . 7
9.2.2 Mechanical tests . 7
9.2.3 Impact test . 7
9.3 Retests . 8
10 Marking . 8
Annex A (normative) Ruling sections for mechanical properties .18
Annex B (normative) Supplementary or special requirements .22
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oSIST prEN ISO 683-5:2021
ISO 683-5:2017(E)
Annex C (informative) Designation of steels given in this document and of comparable
grades covered in various designation systems.24
Annex D (informative) Dimensional standards applicable to products complying with
this document .25
Bibliography .26
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oSIST prEN ISO 683-5:2021
ISO 683-5:2017(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: w w w . i s o .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 683-5:2014), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— in the Scope, “see 5.2” has been added as a cross reference;
— in 3.1, note 1 to entry has been revised;
— in 5.2, the ordering example has been moved into a new subclause, as 5.3;
— in 7.7.3, the surface class given has been changed from A to 1z2;
— in 9.2.3, the option for retesting has been revised;
— Figure 3 has been renamed as Table 9;
— in A.2.1, the cross references have been corrected to A.2.2 to A.2.4.
A list of all parts in the ISO 683 series can be found on the ISO website.
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oSIST prEN ISO 683-5:2021
INTERNATIONAL STANDARD ISO 683-5:2017(E)
Heat treatable steels, alloy steels and free-cutting steels —
Part 5:
Nitriding steels
1 Scope
This document gives the technical delivery requirements for
— semi-finished products, e.g. blooms, billets, slabs (see note 1),
— bars (see note 1),
— wire rod,
— hot-rolled plates (see note 2), and
— hammer or drop forgings (see note 1)
manufactured from the nitriding steels listed in Table 3 and supplied in one of the heat-treatment
conditions given for the different types of products in Table 1, rows 2 to 5, and in one of the surface
conditions given in Table 2.
The steels are generally intended for the fabrication of quenched and tempered and, subsequently,
nitriding machine parts.
The requirements for mechanical properties given in this document are restricted to the sizes given in
Table 6.
NOTE 1 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and
hammer-forged bars are in the following covered under semi-finished products or bars and not under the term
“hammer and drop forgings”.
NOTE 2 The term “plate” includes in the following also wide flats unless otherwise stated.
In special cases, variations in these technical delivery requirements or additions to these requirements
can form the subject of an agreement at the time of enquiry and order (see 5.2 and Annex B).
In addition to this document, the general technical delivery requirements of ISO 404 are applicable.
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 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing
ISO 404:2013, Steel and steel products — General technical delivery requirements
ISO 643, Steels — Micrographic determination of the apparent grain size
ISO 3887, Steels — Determination of depth of decarburization
ISO 4885, Ferrous materials — Heat treatments — Vocabulary
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oSIST prEN ISO 683-5:2021
ISO 683-5:2017(E)
ISO 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based
on chemical composition
ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main
quality classes and main property or application characteristics
ISO/TS 4949, Steel names based on letter symbols
ISO 4967, Steel — Determination of content of non-metallic inclusions — Micrographic method using
standard diagrams
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 6929, Steel products — Vocabulary
ISO 7788, Steel — Surface finish of hot-rolled plates and wide flats — Delivery requirements
ISO 9443, Heat-treatable and alloy steels — Surface quality classes for hot-rolled round bars and wire
rods — Technical delivery conditions
ISO/TR 9769, Steel and iron — Review of available methods of analysis
ISO 10474, Steel and steel products — Inspection documents
ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 377, ISO 4885, ISO 4948-1,
ISO 4948-2, ISO 6929 and ISO 14284 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
ruling section
section for which the specified mechanical properties shall apply
Note 1 to entry: Independent of the actual shape and dimensions of the cross-section of the product, the size of its
ruling section is always given by a diameter. This corresponds to the diameter of an “equivalent round bar”. That
is a round bar which will show the same cooling rate as the actual ruling section of the product concerned at its
position for taking the test pieces when being cooled from austenitizing temperature.
3.2
nitriding steel
heat-treatable steel containing controlled amounts of the nitride forming elements, aluminium,
chromium, molybdenum and/or vanadium and are particularly suited for nitriding
3.3
nitriding
heat treatment characterized by keeping a steel product for a sufficiently long time at temperatures
below the transformation temperature AC1 in a nitrogen providing gaseous or liquid salt environment
to achieve diffusion of the nitrogen into the steel surface
Note 1 to entry: An increase in surface hardness, wear resistance and fatigue properties is attained with this
treatment.
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oSIST prEN ISO 683-5:2021
ISO 683-5:2017(E)
4 Classification and designation
4.1 Classification
The classification of the relevant steel grades is allocated in accordance with ISO 4948-1 and ISO 4948-2.
All steels covered by this document are classified as alloy special steels.
4.2 Designation
For the steel grades covered by this document, the steel names as given in the relevant tables are
allocated in accordance with ISO/TS 4949.
The designation of steels given in this document and of comparable grades covered in various
designation systems is given in Annex C.
5 Information to be supplied by the purchaser
5.1 Mandatory information
The manufacturer shall obtain the following information from the purchaser at the time of enquiry
and order:
a) the quantity to be delivered;
b) the designation of the product form (e.g. slab, bloom, billet, round bar, wire rod);
c) either the designation of the dimensional standard and the dimensions and tolerances selected
from this (see 7.9) or the designation of the drawing or any other document covering the dimensions
and tolerances required for the product;
d) reference to this document, i.e. ISO 683-5;
e) the designation of the steel grade given in Table 3;
f) designation for a test report 2.2 or, if required, any other type of inspection document in accordance
with ISO 10474.
5.2 Options/supplementary or special requirements
A number of options are specified in this document and listed below in this subclause. If the purchaser
does not indicate the wish to implement any of these options, the products will be supplied in accordance
with the basic specification of this document (see 5.1):
a) if a heat-treatment condition other than the untreated condition is required, the symbol for this
other condition (see Table 1, column 2);
b) if another surface condition than hot worked or a special surface quality is required, the surface
condition (see Table 2, column 2) and the surface quality (see 7.7);
c) any supplementary requirement that shall be complied with, the symbol and, where necessary, the
details of this supplementary requirement (see Annex B);
d) any requirement relating to the removal of surface defects (see 7.7.4);
e) any requirement regarding the permissible depth of decarburization (see 7.8);
f) impact test at a temperature lower than room temperature (see 9.2.3).
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5.3 Ordering example
EXAMPLE 2 t hot-rolled round bars according to ISO 1035-1 with a nominal diameter of 40 mm and a nominal
length of 8 000 mm with diameter tolerance according to class S and with length tolerance according to class L2
made of steel grade ISO 683-5, 31CrMo12 (see Table 3) in heat-treatment condition +QT (see Table 1) with surface
blast cleaned +BC (see Table 2) and with an inspection document 2.2.
Round bars ISO 1035 - 40,0S × 8 000L2
ISO 683-5 - 31CrMo12+QT
inspection document ISO 10474 2.2
6 Manufacturing process
6.1 General
The manufacturing process of the steel and of the products is with the restrictions given by the
requirements in 6.2 and 6.4, left to the discretion of the manufacturer.
6.2 Deoxidization
All steels shall be deoxidized.
6.3 Heat treatment and surface condition at delivery
6.3.1 Normal condition at delivery
Unless otherwise agreed at the time of enquiry and order, the products shall be delivered in the
untreated, i.e. hot-worked condition.
6.3.2 Particular heat-treatment condition
If so agreed at the time of enquiry and order, the products shall be delivered in one of the particular
heat-treatment conditions given in Table 1, lines 3 to 5.
6.3.3 Particular surface conditions
If so agreed at the time of enquiry and order, the products shall be delivered in another particular
surface condition as given in Table 2, lines 3 to 6.
6.4 Traceability of the cast
Each product shall be traceable to the cast (see Clause 10).
7 Requirements
7.1 Chemical composition, hardness and mechanical properties
7.1.1 General
Table 1 shows the combinations of usual heat-treatment conditions at delivery, product forms and
requirements as specified in Tables 3 to 6.
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