EN 10083-1:2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
   4.1 Classification
   4.2 Designation
5 Information to be supplied by the purchaser
   5.1 Mandatory information
   5.2 Options
6 Manufacturing process
   6.1 General
   6.2 De-oxidation
   6.3 Heat treatment and surface condition at delivery
   6.4 Cast separation
7 Requirements
   7.1 Chemical composition, hardenability and mechanical
        properties
   7.2 Machinability
   7.3 Shearability of semi-finished products and bars
   7.4 Structure
   7.5 Internal soundness
   7.6 Surface quality
   7.7 Dimensions, tolerances on dimensions and shape
8 Inspection
   8.1 Testing procedures and types of documents
   8.2 Frequency of testing
   8.3 Tests to be carried out for specific inspection
9 Preparation of samples and test pieces
   9.1 Selection and preparation of samples for chemical
        analysis
   9.2 Location and orientation of samples and test pieces
        for mechanical tests
   9.3 Location and preparation of samples for hardness and
        hardenability tests
   9.4 Identification of samples and test pieces
10 Test methods
   10.1 Chemical analysis
   10.2 Mechanical tests
   10.3 Hardness and hardenability tests
   10.4 Retests
11 Marking, labelling, packaging
Annex A (normative) Ruling sections for the mechanical properties
Annex B (normative) Options
Annex C (informative) Other relevant standards
Annex D (informative) Dimensional standards applicable to products
                      complying with this European Standard
Annex E (informative) Determining the non-metallic inclusion
                      content

This part of EN 10083 specifies the general technical delivery requirements forsemi-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 1European Standards on similar grades are listed in Annex C.NOTE 2Hammer 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 3Special agreements should be made when ordering un-worked continuously cast semi-finished products.NOTE 4In 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