EN ISO 683-4:2018

Heat-treatable steels, alloy steels and free-cutting steels - Part 4: Free-cutting steels (ISO 683-4:2016)

Publication date:   Nov 14, 2018

General information

60.60 Standard published   Jun 20, 2018


CEN/TC 459/SC 5 Steels for heat treatment, alloy steels, free-cutting steels and stainless steels

European Norm

77.140.10   Heat-treatable steels | 77.140.20   Stainless steels



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ISO 683-4:2016 gives the technical delivery requirements for semi-finished products (e.g. blooms, billets, slabs), bars and wire rod, manufactured from the free-cutting steels listed in Table 2 and supplied in one of the treatment conditions given for the different types of products in Table 1, rows 2 to 4.
It covers three groups of free-cutting steels for mechanical purposes as listed in Table 2, namely
a) not intended for heat treatment,
b) suitable for case-hardening, and
c) suitable for quenching and tempering.
Free-cutting steels are often used as bright bars. For these products, refer to ISO 683‑18.
In special cases, variations in these technical delivery requirements or additions to them can form the subject of an agreement at the time of enquiry and order (see 5.2 and Annex B).
In addition to ISO 683-4:2016, the general technical delivery requirements of ISO 404 are applicable.

Life cycle


EN 10087:1998


EN ISO 683-4:2018
60.60 Standard published
Jun 20, 2018


Adopted from ISO 683-4:2016 IDENTICAL