ISO 4957:2018
Tool steels
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.
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.
La présente Norme internationale spécifie les nuances des aciers à outils corroyés, à savoir: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, la présente Norme internationale s'applique à tous les types de produits laminés à chaud ou à froid, forgés, ou étirés à froid et qui possèdent à la livraison l'un des états de surface et de traitement thermique spécifiés en 4.1.2 et dans le Tableau 1.Les produits mentionnés dans la présente Norme internationale peuvent être produits par la métallurgie des poudres.NOTE 1 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.NOTE 2 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, il convient de baser le choix du matériau sur l'ISO 4955 ou l'ISO 9722.En complément de la présente Norme internationale, les conditions techniques générales de livraison définies dans l'ISO 404 sont applicables.
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