EN 10025-3:2004

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 Grain structure
   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
        7.5.1 Strip
        7.5.2 Plates and wide flats
        7.5.3 Sections
        7.5.4 Bars and rods
   7.6 Internal soundness
   7.7 Dimensions, 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 EURONORMS referenced
Bibliography

Part 3 of this document, in addition to part 1, specifies requirements for flat and long products of hot rolled weldable fine grain structural steels in the normalized/normalized rolled delivery condition in the grades and qualities given in Tables 2 to 4 (chemical composition) and Tables 5 to 7 (mechanical properties) in thickness £ 250 mm for grades S275, S355 and S420 and in thickness £ 200 mm for grade S460.In addition to EN 10025-1:2004 the steels specified in this document are especially intended for use in heavily loaded parts of welded structures such as, bridges, flood gates, storages tanks, water supply tanks, etc., for service at ambient and low temperatures.