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 Deoxidation
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) - Options
Annex B (informative) - Comparison of steel grades specified
in this European Standard and ISO 683-1:1987 and
other steel grades previously standardized nationally
Annex C (informative) - Reference values for the maximum
diameter at a certain core hardness of steels
with boron
Bibliography