This part of EN 10083 specifies the general technical delivery requirements for
- semi-finished products, hot formed, e.g. blooms, billets, slabs (see NOTES 2 and 3),
- bars (see NOTE 2),
- rod,
- wide flats,
- hot-rolled strip and sheet/plate,
- forgings (see NOTE 2)
manufactured from the direct hardening non alloy steels for quenching and tempering (see EN 10083-2), the
direct hardening alloy steels for quenching and tempering (see EN 10083-3), the non alloy flame and induction
hardening steels (see EN 10083-2) and the alloy flame and induction hardening steels (see EN 10083-3), and
supplied in one of the heat treatment conditions given for the different types of products in the relevant tables
of EN 10083-2 and EN 10083-3 and in one of the surface conditions given in the relevant tables of EN 10083-
2 and EN 10083-3.
The steels are generally intended for the manufacture of quenched and tempered, flame or induction
hardened machine parts, but can also be used in the normalized condition (see EN 10083-2).
Where applicable, the requirements for mechanical properties given in EN 10083-2 and EN 10083-3 are
restricted to the relevant tables in these documents.
NOTE 1 European Standards on similar grades are listed in Annex C.
NOTE 2 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 "forgings".
NOTE 3 Special agreements should be made when ordering un-worked continuously cast semi-finished products.
NOTE 4 In accordance with EN 10020, the steels covered by EN 10083-2:2006 are quality and special steels, the
steels covered by EN 10083-3:2006 are special steels. The differences between quality and special steels are
characterized by the following requirements, which are valid for special steels only:
- the minimum impact values in the quenched and tempered condition (for non alloy special steels in the case of mean
percentages by mass of carbon < 0,50 % only);
- limiting hardenability values in the Jominy test (for non alloy steels in the case of percentages by mass of carbon
> 0,30 % only);
- limited oxide inclusion content;
- lower maximum contents for phosphorus and sulphur.
NOTE 5 This European Standard does not apply for bright steel products. For bright steel products
EN 10277-1 and EN 10277-5 apply.
In special cases, variations in these technical delivery requirements or additions to them may be agreed at the
time of enquiry and order (see Annex B).
In addition to the specifications of this European Standard, the general technical delivery conditions given in
EN 10021 are applicable unless otherwise specified.
BS EN 10083-1:2006 Referenced Document
EN 10002-1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Ambient Temperature
EN 10020:2000 Definition and classification of grades of steel
EN 10021 General technical delivery conditions for steel products*, 2024-04-18 Update
EN 10027-1 Designation Systems for Steels - Part 1: Steel Names
EN 10027-2 Designation systems for steels - Part 2: Numerical system*, 2015-04-01 Update
BS EN 10083-1:2006 history
2018BS EN ISO 683-1:2018 Heat-treatable steels, alloy steels and free-cutting steels. Non-alloy steels for quenching and tempering
2006BS EN 10083-1:2006 Steels for quenching and tempering - General technical delivery conditions
1991BS EN 10083-1:1991 Quenched and tempered steels - Technical delivery conditions for special steels