EN 10225:2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Information to be supplied by the purchaser
   4.1 General
   4.2 Options
5 Dimensions, mass and tolerances
   5.1 Dimensions and tolerances
   5.2 Mass of steel
6 Classification and designation
   6.1 Classification
   6.2 Designation
7 Manufacturing process
   7.1 Steel manufacturing process
   7.2 Thickness limits and segregation control
   7.3 Delivery condition
8 Requirements
   8.1 General
   8.2 Chemical composition
   8.3 Mechanical properties
   8.4 Technological properties
   8.5 Surface condition and internal defects
9 Inspection and testing
   9.1 General
   9.2 Ex-mill supply
   9.3 Merchant supply
   9.4 Identification of cast
   9.5 Delivery
10 Sampling
   10.1 General
   10.2 Frequency of testing
   10.3 Preparation of samples and test pieces
   10.4 Verification of chemical composition
11 Test methods
   11.1 Chemical analysis
   11.2 Mechanical tests
   11.3 Non-destructive tests
   11.4 Re-tests and re-submission for testing
12 Marking, bundling and protective coating
   12.1 Die stamp and paint marking
   12.2 Bundling
   12.3 Colour coding
   12.4 Protective coating
13 Options
Annex A (normative) - Location of test samples for tensile
        and impact tests
Annex B (normative) - Location of tensile test piece when
        two rolled surfaces cannot be retained
Annex C (normative when option 2 is specified by the purchaser) -
        Details of manufacturing procedures to be supplied by the
        manufacturer for steels of groups 2 and 3
Annex D (normative when option 16 is specified by the purchaser) -
        Cold forming characteristics for steel plate of groups
        2 and 3
Annex E (normative when option 18 is specified by the purchaser) -
        Weldability testing for steels of groups 2 and 3 and
        mechanical testing of butt welds
Annex F (normative when option 18 is specified by the purchaser) -
        Weldability testing for steels of groups 2 and 3 -
        Bead-on-plate
Annex G (normative when option 18 is specified by the purchaser) -
        Weldability testing for steels of groups 2 and 3 -
        Controlled thermal severity tests (CTS)
Bibliography

This European Standard specifies requirements for weldable structural steels to be used in the fabrication of fixed offshore structures in the form of plates up to and including 150 mm thick. It also specifies sections up to 63 mm thick except for sections delivered in the as-rolled condition which are permitted up to 25 mm thick only. Seamless hollow sections up to and including 40 mm thick and high frequency electric resistance welded hollow sections up to and including 20 mm thick are specified. Greater thicknesses for sections and hollow sections may be agreed, provided the technical requirements of this European Standard are maintained.For plates the thickness limitations are:S355G2+N, S355G5+M, - up to and including 20 mmS355G3+N, S355G6+M - up to and including 40 mmS355G7+N, S355G8+N, S355G9+N, S355G10+N - up to and including 150 mmS355G7+M, S355G8+M, S355G9+M, S355G10+M - up to and including 100 mmS420G1+Q, S420G1+M, S420G2+Q, S420G2+M - up to and including 100 mmS460G1+Q, S460G1+M, S460G2+Q, S460G2+M - up to and including 100 mmThe standard is applicable to steels for offshore structures, designed to operate in the offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process piping, and other utilities. It is primarily applicable to the North Sea Sector, but may also be applicable in other areas provided that due consideration is given to local conditions e.g. temperature.In the case of hollow sections formed from plate with the seam fusion welded, this European standard covers only the requirements of the plate material.Minimum yield strengths up to 460 MPa are specified together with low temperature impact properties at temperatures down to –40 °C.This European standard applies to material supplied ex-mill or from merchant's stock.