EN 10025-6:2004+A1:2009

Foreword
1 Scope
2 Normative references
   2.1 General standards
   2.2 Standards on dimensions and tolerances
   2.3 Standards on testing
3 Terms and definitions
4 Classification and designation
   4.1 Classification
        4.1.1 Main quality classes
        4.1.2 Grades and qualities
   4.2 Designation
5 Information to be supplied by the purchaser
   5.1 Mandatory information
   5.2 Options
6 Manufacturing process
   6.1 Steel making process
   6.2 Deoxidation or grain size
   6.3 Delivery conditions
7 Requirements
   7.1 General
   7.2 Chemical composition
   7.3 Mechanical properties
        7.3.1 General
        7.3.2 Impact properties
        7.3.3 Improved deformation properties
              perpendicular to the surface
   7.4 Technological properties
        7.4.1 Weldability
        7.4.2 Formability
        7.4.3 Suitability for hot-dip zinc-coating
   7.5 Surface properties
   7.6 Internal soundness
   7.7 Tolerances on dimensions and shape, mass
8 Inspection
   8.1 General
   8.2 Type of inspection and inspection document
   8.3 Frequency of testing
        8.3.1 Sampling
        8.3.2 Test units
        8.3.3 Verification of chemical composition
   8.4 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
        9.2.1 General
        9.2.2 Preparation of samples
        9.2.3 Preparation of test pieces
        9.2.4 Impact test pieces
   9.3 Identification of samples and test pieces
10 Test methods
   10.1 Chemical analysis
   10.2 Mechanical tests
   10.3 Ultrasonic testing
   10.4 Retests
11 Marking, labelling, packaging
12 Complaints
13 Options
Annex A (informative) - List of corresponding former
        designations
Annex B (informative) - List of national standards which
        correspond with ECSC IC 2 referenced
Annex C (informative) - Minimum recommended inside bend radii
        for flanging
Bibliography

Part 6 of this document, in addition to part 1, specifies requirements for flat products of high yield strength alloy special steels. The grades and qualities are given in Tables 2 to 4 (chemical composition) and Tables 5 to 7 (mechanical properties) and are supplied in the quenched and tempered condition as given in 6.3.
The steels specified in this document are applicable to hot-rolled flat products with a minimum nominal thickness of 3 mm and a maximum nominal thickness