Tool steels (ISO 4957:2018)

This document specifies requirements for the following grades of wrought tool steels:
a)    non-alloy cold-work tool steels;
b)    alloy cold-work tool steels;
c)    alloy hot-work tool steels;
d)    high-speed tool steels.
If not stated otherwise, this document applies to all types of hot-rolled, forged, cold-drawn or cold-rolled products or products produced by powder metallurgy, which are supplied in one of the surface and heat-treatment conditions given in 6.2 and Table 1.
NOTE       Tables 2, 4, 6 and 8 cover only those steels which have gained certain international importance, which does not mean, however, that they are available in all industrial countries. In addition, a number of other steels for tools are specified in regional, national or company standards.
Where the heat resistance of the tools is of particular importance, as for example in the case of tools for hot forming glass, the material selection is based on ISO 4955.

Werkzeugstähle (ISO 4957:2018)

Dieses Dokument legt die Anforderungen an folgende Sorten aus Werkzeugstahl fest:
a) unlegierte Kaltarbeitstähle;
b) legierte Kaltarbeitstähle;
c) legierte Warmarbeitstähle;
d) Schnellarbeitstähle.
Soweit nicht anders angegeben gilt dieses Dokument für alle Arten warmgewalzter, geschmiedeter, kaltgezogener oder mittels Pulvermetallurgie hergestellter Erzeugnisse, die in einem der in 6.2 und Tabelle 1 aufgeführten Oberflächen- und Wärmebehandlungszustände geliefert werden.
ANMERKUNG Die Tabellen 2, 4, 6 und 8 berücksichtigen nur solche Stähle, die eine gewisse internationale Bedeutung haben; das bedeutet jedoch nicht, dass sie in allen Industrieländern verfügbar sind. Zusätzlich ist eine Anzahl von Stählen für Werkzeuge in regionalen, nationalen oder Werksnormen spezifiziert.
Wenn die Hitzebeständigkeit der Werkzeuge von besondere Bedeutung ist, wie zum Beispiel bei Werkzeugen zum Warmumformen von Glas, basiert die Werkstoffauswahl auf ISO 4955 basieren.

Aciers à outils (ISO 4957:2018)

Le présent document spécifie les exigences concernant les nuances des aciers à outils corroyés suivants:
a)    aciers à outils non alliés pour travail à froid;
b)    aciers à outils alliés pour travail à froid;
c)    aciers à outils alliés pour travail à chaud;
d)    aciers rapides.
Sauf spécification contraire dans la suite, la présent document s'applique à tous les types de produits laminés à chaud ou à froid, forgés, ou étirés à froid ou aux produits fabriqués par la métallurgie des poudres et qui possèdent à la livraison l'un des états de surface et de traitement thermique spécifiés en 6.2 et dans le Tableau 1.
NOTE       Les Tableaux 2, 4, 6 et 8 ne prennent en compte que les aciers qui ont acquis une certaine renommée internationale, ce qui ne signifie pas toutefois qu'ils soient disponibles dans tous les pays industriels. De plus, un certain nombre d'autres aciers à outils sont décrits dans des normes régionales, nationales ou d'entreprises.
Lorsque la résistance à la chaleur des outils est un facteur d'une importance particulière, comme par exemple dans le cas des outils pour le façonnage à chaud du verre, le choix du matériau est basé sur l'ISO 4955.

Orodna jekla (ISO 4957:2018)

Ta dokument določa zahteve za naslednje razrede kovanih orodnih jekel:
a) hladno obdelana orodna jekla, ki niso zlitine;
b) zlitine hladno obdelanih orodnih jekel;
c) zlitine vroče obdelanih orodnih jekel;
d) visoko hitrostna orodna jekla.
Ta dokument se uporablja za vse vrste vroče valjanih, kovanih, hladno vlečenih ali hladno valjanih proizvodov oziroma proizvodov, izdelanih z metalurgijo prahu, ki so podani v enem od pogojev površine in toplotne obdelave iz točke 6.2 in preglednice 1, razen če ni navedeno drugače.
OPOMBA: Preglednice 2, 4, 6 in 8 obravnavajo le tista jekla, ki so mednarodno nekoliko bolj pomembna, kar pa ne pomeni, da so na voljo v vseh industrijskih državah. Poleg tega so v regionalnih in nacionalnih standardih ali standardih za podjetja določena tudi številna druga orodna jekla.
Če je posebej pomembna toplotna odpornost orodij, npr. pri orodjih za vroče oblikovanje stekla, izbira materiala temelji na standardu ISO 4955.

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Standards Content (Sample)

SIST EN ISO 4957:2018
SIST EN ISO 4957:2000
Orodna jekla (ISO 4957:2018)
Tool steels (ISO 4957:2018)
Werkzeugstähle (ISO 4957:2018)
Aciers à outils (ISO 4957:2018)
Ta slovenski standard je istoveten z: EN ISO 4957:2018
77.140.35 Orodna jekla Tool steels
SIST EN ISO 4957:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4957:2018

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SIST EN ISO 4957:2018

EN ISO 4957


July 2018
ICS 77.140.35 Supersedes EN ISO 4957:1999
English Version

Tool steels (ISO 4957:2018)
Aciers à outils (ISO 4957:2018) Werkzeugstähle (ISO 4957:2018)
This European Standard was approved by CEN on 24 June 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

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.



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 4957:2018 E
worldwide for CEN national Members.

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SIST EN ISO 4957:2018
EN ISO 4957:2018 (E)
Contents Page
European foreword . 3


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SIST EN ISO 4957:2018
EN ISO 4957:2018 (E)
European foreword
This document (EN ISO 4957:2018) 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 ISO 4957:1999.
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 4957:2018 has been approved by CEN as EN ISO 4957:2018 without any modification.


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SIST EN ISO 4957:2018

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SIST EN ISO 4957:2018
Third edition
Tool steels
Aciers à outils
Reference number
ISO 4957:2018(E)
ISO 2018

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SIST EN ISO 4957:2018
ISO 4957:2018(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

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