SIST EN 10225:2009
(Main)Weldable structural steels for fixed offshore structures - Technical delivery conditions
Weldable structural steels for fixed offshore structures - Technical delivery conditions
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 mm S355G3+N, S355G6+M - up to and including 40 mm S355G7+N, S355G8+N, S355G9+N, S355G10+N - up to and including 150 mm S355G7+M, S355G8+M, S355G9+M, S355G10+M - up to and including 100 mm S420G1+Q, S420G1+M, S420G2+Q, S420G2+M - up to and including 100 mm S460G1+Q, S460G1+M, S460G2+Q, S460G2+M - up to and including 100 mm. The 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.
S355G7+N, S355G8+N, S355G9+N, S355G10+N - up to and including 150 mm
S355G7+M, S355G8+M, S355G9+M, S355G10+M - up to and including 100 mm
S420G1+Q, S420G1+M, S420G2+Q, S420G2+M - up to and including 100 mm
S460G1+Q, S460G1+M, S460G2+Q, S460G2+M - up to and including 100 mm
The 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.
Schweißgeeignete Baustähle für feststehende Offshore- Konstruktionen - Technische Lieferbedingungen
Diese Europäische Norm legt die Anforderungen an schweißgeeignete Baustähle fest, die zur Herstellung von
fest stehenden Offshore-Konstruktionen verwendet werden, und zwar in Form von Blechen mit einer Dicke bis
einschließlich 150 mm; von Profilen mit einer Dicke bis 63 mm, außer bei Profilen im Walzzustand, die nur bis
zu einer Dicke von 25 mm geliefert werden, sowie von nahtlosen Hohlprofilen mit eine Dicke bis einschließlich
40 mm und von elektrisch widerstandsgeschweißten Hohlprofilen mit einer Dicke bis einschließlich 20 mm.
Größere Dicken für Profile und Hohlprofile können vereinbart werden, vorausgesetzt, die technischen
Lieferbedingungen dieser Norm werden eingehalten.
Für Bleche gelten die folgenden Dickenbeschränkungen:
S355G2+N, S355G5+M: bis einschließlich 20 mm;
S355G3+N, S355G6+M: bis einschließlich 40 mm;
S355G7+N, S355G8+N, S355G9+N, S355G10+N: bis einschließlich 150 mm;
S355G7+M, S355G8+M, S355G9+M, S355G10+M: bis einschließlich 100 mm;
S420G1+QT, S420G1+M, S420G2+QT, S420G2+M: bis einschließlich 100 mm;
S460G1+QT, S460G1+M, S460G2+QT, S460G2+M: bis einschließlich 100 mm.
Diese Norm gilt für Stähle für Offshore-Konstruktionen, die für den Einsatz im Offshore-Bereich vorgesehen
sind, jedoch nicht für Stähle zur Herstellung von Unterwasser-Pipelines, Steigleitungen (risers), Verfahrens-
Ausrüstungen, Rohrsystemen und anderen Einrichtungen und Ausrüstungen. Sie gilt in erster Linie für den
Bereich der Nordsee, kann jedoch auch für andere Gebiete angewendet werden, vorausgesetzt, dass die
örtlichen Bedingungen, z. B. die Temperatur, genügend berücksichtigt werden.
Bei Hohlprofilen, die aus Blech mit schmelzgeschweißter Naht erzeugt werden, deckt diese Europäische
Norm nur die Anforderungen an den Blechwerkstoff ab.
Mindestwerte der Streckgrenze bis zu 460 MPa sind zusammen mit Tieftemperatur-Kerbschlageigenschaften
bei Temperaturen bis zu −40 °C festgelegt.
Aciers de construction soudables destinés à la fabrication de structures marines fixes - Conditions techniques de livraison
La présente Norme européenne spécifie les prescriptions applicables aux aciers de construction soudables
destinés à la fabrication de structures marines fixes sous forme de tôles, d'épaisseur inférieure ou égale à
150 mm. Elle spécifie également les prescriptions applicables aux profilés d'épaisseur jusqu'à 63 mm, à
l'exception des profilés livrés à l'état brut de laminage (G) qui ne sont autorisés que jusqu'à 25 mm
d'épaisseur. Les spécifications applicables aux profils creux sans soudure (S) d'épaisseur inférieure ou égale
à 40 mm et aux profils creux soudés par résistance électrique à haute fréquence (HFW) d'épaisseur inférieure
ou égale à 20 mm sont également indiquées. Des épaisseurs plus importantes pour les profilés normaux et
les profils creux peuvent être acceptées, sous réserve de respecter les prescriptions techniques de la
présente Norme européenne.
Pour les tôles, les limites d'épaisseur sont les suivantes :
S355G2+N, S355G5+M, - jusqu'à 20 mm inclus ;
S355G3+N, S355G6+M - jusqu'à 40 mm inclus ;
S355G7+N, S355G8+N, S355G9+N, S355G10+N - jusqu'à 150 mm inclus ;
S355G7+M, S355G8+M, S355G9+M, S355G10+M - jusqu'à 100 mm inclus ;
S420G1+Q, S420G1+M, S420G2+Q, S420G2+M - jusqu'à 100 mm inclus ;
S460G1+Q, S460G1+M, S460G2+Q, S460G2+M - jusqu'à 100 mm inclus.
La norme s'applique aux aciers pour constructions marines exploitées sur le domaine maritime européen, à
l'exclusion des aciers fournis pour réaliser des oléoducs sous-marins, conduites montantes, équipement de
procédés et autres tuyauteries de transport. Elle s'applique prioritairement au secteur de la mer du Nord mais
elle peut également s'appliquer dans d'autres zones dans la mesure où les conditions locales sont dûment
prises en compte, notamment la température.
Dans le cas de profils creux constitués de tôles soudées par fusion, la norme ne concerne que les
prescriptions applicables à la tôle en tant que matériau.
Konstrukcijska jekla za varjene konstrukcije naftnih ploščadi - Tehnični dobavni pogoji
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SRJRMLSchweißgeeignete Baustähle für feststehende Offshore- Konstruktionen - Technische LieferbedingungenAciers de construction soudables destinés à la fabrication de structures marines fixes - Conditions techniques de livraisonWeldable structural steels for fixed offshore structures - Technical delivery conditions77.140.10Jekla za toplotno obdelavoHeat-treatable steelsICS:Ta slovenski standard je istoveten z:EN 10225:2009SIST EN 10225:2009en,fr,de01-september-2009SIST EN 10225:2009SLOVENSKI
STANDARDSIST EN 10225:2002/AC:2003SIST EN 10225:20021DGRPHãþD
SIST EN 10225:2009
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10225July 2009ICS 77.140.10Supersedes EN 10225:2001
English VersionWeldable structural steels for fixed offshore structures -Technical delivery conditionsAciers de construction soudables destinés à la fabricationde structures marines fixes - Conditions techniques delivraisonSchweißgeeignete Baustähle für feststehende Offshore-Konstruktionen - Technische LieferbedingungenThis European Standard was approved by CEN on 5 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10225:2009: ESIST EN 10225:2009
EN 10225:2009 (E) 2 Contents Page Foreword .41Scope .52Normative references .53Terms and definitions .74Information to be supplied by the purchaser .94.1General .94.2Options . 105Dimensions, mass and tolerances . 105.1Dimensions and tolerances . 105.2Mass of steel . 116Classification and designation . 116.1Classification . 116.2Designation . 117Manufacturing process . 127.1Steel manufacturing process . 127.2Thickness limits and segregation control . 127.3Delivery condition . 128Requirements . 138.1General . 138.2Chemical composition . 138.3Mechanical properties . 168.4Technological properties . 178.5Surface condition and internal defects . 179Inspection and testing . 199.1General . 199.2Ex-mill supply . 209.3Merchant supply . 219.4Identification of cast . 219.5Delivery . 2110Sampling . 2110.1General . 2110.2Frequency of testing . 2110.3Preparation of samples and test pieces . 2210.4Verification of chemical composition . 2411Test methods . 2411.1Chemical analysis . 2411.2Mechanical tests . 2411.3Non-destructive tests . 2511.4Re-tests and re-submission for testing . 2612Marking, bundling and protective coating . 2612.1Die stamp and paint marking . 2612.2Bundling . 2712.3Colour coding . 2712.4Protective coating . 2813Options . 28SIST EN 10225:2009
EN 10225:2009 (E) 3 Annex A (normative)
Location of test samples for tensile and impact tests . 46Annex B (normative)
Location of tensile test piece when two rolled surfaces cannot be retained . 48Annex 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 . 49Annex D (normative when option 16 is specified by the purchaser)
Cold forming characteristics for steel plate of groups 2 and 3 . 50Annex 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 . 51Annex F (normative when option 18 is specified by the purchaser)
Weldability testing for steels of groups 2 and 3 - Bead-on-plate . 68Annex G (normative)
Weldability testing for steels of groups 2 and 3 - Controlled thermal severity tests (CTS) . 70Bibliography . 76 SIST EN 10225:2009
EN 10225:2009 (E) 4 Foreword This document (EN 10225:2009) has been prepared by Technical Committee ECISS/TC 10 “Structural steels - Grades and qualities”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10225:2001. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 10225:2009
EN 10225:2009 (E) 5 1 Scope 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 mm S355G3+N, S355G6+M - up to and including 40 mm S355G7+N, S355G8+N, S355G9+N, S355G10+N - up to and including 150 mm S355G7+M, S355G8+M, S355G9+M, S355G10+M - up to and including 100 mm S420G1+QT, S420G1+M, S420G2+QT, S420G2+M - up to and including 100 mm S460G1+QT, S460G1+M, S460G2+QT, S460G2+M - up to and including 100 mm The 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. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 473, Non-destructive testing — Qualification and certification of NDT personnel — General principles EN 571-1, Non-destructive testing — Penetrant testing — Part 1: General principles EN 895, Destructive tests on welds in metallic materials — Transverse tensile tests EN 1011-1, Welding — Recommendations for welding of metallic materials — Part 1: General guidance for arc welding EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature EN 10020:2000, Definition and classification of grades of steels EN 10021:2006, General technical delivery conditions for steel products SIST EN 10225:2009
EN 10225:2009 (E) 6 EN 10024, Hot rolled taper flange I sections — Tolerances on shape and dimensions EN 10025-1, Hot rolled products of structural steels — Part 1: General technical delivery conditions EN 10025-3, Hot rolled products of structural steels — Part 3: Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels EN 10025-4, Hot rolled products of structural steels — Part 4: Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels EN 10025-6, Hot rolled products of structural steels — Part 6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition EN 10027-1, Designation systems for steels — Part 1: Steel names EN 10027-2, Designation systems for steels — Part 2: Numerical system EN 10029, Hot rolled steel plates 3 mm thick or above — Tolerances on dimensions, shape and mass EN 10034, Structural steel I and H sections — Tolerances on shape and dimensions EN 10045-1, Metallic materials — Charpy impact test — Part 1: Test method EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10055, Hot rolled steel equal flange tees with radiused root and toes — Dimensions and tolerances on shape and dimensions EN 10056-2, Structural steel equal and unequal leg angles — Part 2: Tolerances on shape and dimensions EN 10067, Hot rolled bulb flats — Dimensions and tolerances on shape, dimensions and mass EN 10079:2007, Definition of steel products EN 10160, Ultrasonic testing of steel flat product of thickness equal to or greater than 6 mm (reflection method) EN 10163-2, Delivery requirements for surface conditions of hot-rolled steel plates, wide flats and sections — Part 2: Plates and wide flats EN 10163-3, Delivery requirements for surface conditions of hot-rolled steel plates, wide flats and sections — Part 3: Sections EN 10164, Steel products with improved deformation properties perpendicular to the surface of the product — Technical delivery conditions EN 10204, Metallic products — Types of inspection documents EN 10210-1, Hot finished structural hollow sections of non-alloy and fine grain steels — Part 1: Technical delivery conditions EN 10210-2, Hot finished structural hollow sections of non-alloy and fine grain steels — Part 2: Tolerances, dimensions and sectional properties EN 10246-3, Non-destructive testing of steel tubes — Part 3: Automatic eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections SIST EN 10225:2009
EN 10225:2009 (E) 7 EN 10246-5, Non-destructive testing of steel tubes — Part 5: Automatic full peripheral magnetic transducer/flux leakage testing of seamless and welded (except submerged arc welded) ferromagnetic steel tubes for the detection of longitudinal imperfections EN 10246-7, Non-destructive testing of steel tubes — Part 7: Automatic full peripheral ultrasonic testing of seamless and welded (except submerged arc welded) steel tubes for the detection of longitudinal imperfections EN 10246-8, Non-destructive testing of steel tubes — Part 8: Automatic ultrasonic testing of the weld seam of electric welded steel tubes for the detection of longitudinal imperfections EN 10246-12, Non-destructive testing of steel tubes — Part 12: Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections EN 10246-14, Non-destructive testing of steel tubes — Part 14: Automatic ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of laminar imperfections EN 10246-15, Non-destructive testing of steel tubes — Part 15: Automatic ultrasonic testing of strip/plate used in the manufacture of welded steel tubes for the detection of laminar imperfections EN 10256, Non-destructive testing of steel tubes — Qualification and competence of level 1 and 2 non-destructive testing personnel EN 10279, Hot rolled steel channels — Tolerances on shape, dimensions and mass EN 10306, Iron and steel — Ultrasonic testing of H beams with parallel flanges and IPE beams EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels (ISO 2566-1:1984)
EN ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
(ISO 4063:1998) EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1:2005) EN ISO 6947, Welds — Working positions — Definitions of angles of slope and rotation (ISO 6947:1993) EN ISO 8492, Metallic materials — Tube — Flattening test (ISO 8492:1998) EN ISO 9934-1, Non-destructive testing —- Magnetic particle testing — Part 1: General principles (ISO 9934-1:2001) EN ISO 12737, Metallic materials — Determination of plane-strain fracture toughness (ISO 12737:2005) EN ISO 14284:2002, Steel and iron — Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
(ISO 15614-1:2004+A1:2008) 3 Terms and definitions For the purposes of this standard, the following terms and definitions and those given in EN 10020:2000, EN 10021:2006, EN 10052:1993, EN 10079:2007 and EN ISO 14284:2002 apply: SIST EN 10225:2009
EN 10225:2009 (E) 8 3.1 parent product product rolled from one piece of steel 3.2 manufacturer manufacturer of the steel products 3.3 supplier manufacturer of material supplied ex-mill or the merchant for material supplied from a merchant’s stock (see Clause 1) 3.4 purchaser purchaser or his representative 3.5 concast material produced by a continuous casting process route 3.6 primary elements elements that are essential to the overall integrity of the installation including critical load transfer points and stress concentrations such as nodes NOTE This definition also includes bracing and piling. 3.7 secondary elements elements of minor importance, failure of which would be unlikely to affect the overall integrity of the installation 3.8 seamless hollow section (S) hollow long product, open at both ends, of circular, square or rectangular section, made by piercing a solid product to obtain a tube hollow which is further processed, hot or cold, into its final dimensions 3.9 high frequency welded hollow section (HFW) hollow long product, open at both ends, of circular, square or rectangular section, made by pressure welding in a continuous or non-continuous process, in which strip is formed cold into a hollow profile and the seam weld made by heating the adjacent edges through the resistance to the passage of a high frequency current and pressing the edges together NOTE The electric current may be applied by direct electrode contact or by induction. After welding, the tube hollow is further processed, hot or cold, into its final dimensions. 3.10 normalizing rolling rolling process in which the final deformation is carried out in a particular temperature range leading to a material condition equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing NOTE 1 For the purposes of this European standard, the designation of this delivery condition and of the normalized condition is +N. NOTE 2 In international publications for both normalizing rolling and thermomechanical rolling, the expression "controlled rolling" may be found. However, in view of the different applicability of the products a distinction of the terms is necessary. SIST EN 10225:2009
EN 10225:2009 (E) 9 3.11 thermomechanical rolling rolling process in which the final deformation is carried out in a certain temperature range leading to a material condition with certain properties which cannot be achieved or repeated by heat treatment alone NOTE 1 For the purposes of this European standard, the designation of this delivery condition is +M. NOTE 2 Thermomechanical rolling leading to the delivery condition +M can include processes with an increasing cooling rate with or without tempering including self-tempering but excluding direct quenching and quenching and tempering. 3.12 quenching and tempering
3.12.1 quenching operation which consists of cooling a ferrous product more rapidly than in still air NOTE Quenching also includes direct quenching. 3.12.2 tempering heat treatment applied to a ferrous product generally after quench hardening or other heat treatment to bring the properties to the required level NOTE 1 It consists of heating to specific temperatures (< Ac1) and soaking one or more times followed by cooling at an appropriate rate. NOTE 2 For the purposes of this European standard, the designation of delivery condition quenched and tempered is +QT. 4 Information to be supplied by the purchaser 4.1 General The following information shall be supplied by the purchaser at the time of enquiry and order: a) details of the product form; b) number of this European standard i.e. EN 10225; c) the steel grade (steel name or steel number); d) the type of inspection documents required (see 9.1); e) where applicable, the number of additional copies of inspection documents required and the forwarding address (see 9.2); f) nominal dimensions and when necessary tolerances; g) where applicable, that the material is required for the manufacture of piling; h) purchaser’s order number and item number if applicable; i) quantity. SIST EN 10225:2009
EN 10225:2009 (E) 10 4.2 Options A number of options are specified in Clause 13. In the event that the purchaser does not indicate a wish to implement any of these options, the supplier shall supply in accordance with the basic specification. 5 Dimensions, mass and tolerances 5.1 Dimensions and tolerances 5.1.1 The dimensions and tolerances of the product shall be in accordance with one of the following relevant European Standards and as further specified in 5.1.2 and 5.1.3: EN 10024, EN 10029, EN 10034, EN 10055, EN 10056-2, EN 10067, EN 10210-2, EN 10279. 5.1.2 Unless otherwise agreed plate thickness tolerances shall be in accordance with EN 10029 Class A. See option 1. 5.1.3 On plates, with ripples or corrugations less than 2 m apart (peak to peak) the following criteria shall apply. a) The flatness tolerance shall, in all cases, be measured to the upper surface of the plate laid on a level surface; b) The maximum depth of any ripple or corrugation under the 2 m straight edge shall be 5 mm. The average depth of all ripples on any one plate shall not exceed 4 mm; c) The minimum depth to constitute a ripple or corrugation shall be 2 mm; d) The maximum number of ripples or corrugations allowed in any one plate shall be as given in Tables 1 and 2, and shall apply to all plates 10 mm thick and over and for all plate widths. Table 1 — Maximum number of ripples or corrugations in
plate with thickness ≥≥≥≥ 12 mm Length (L)
m Maximum number of ripples or corrugations L ≤ 6 6 < L ≤ 9 9 < L ≤ 12 12 < L ≤ 15 2 3 4 5
SIST EN 10225:2009
EN 10225:2009 (E) 11 Table 2 — Maximum number of ripples or corrugations inplate
with thickness ≥≥≥≥ 10 mm < 12 mm Length (L)
m Maximum number of ripples or corrugations L ≤ 6 6 < L ≤ 9 9 < L ≤ 12 12 < L ≤ 15 4 5 6 8 5.2 Mass of steel The calculated mass shall be determined using a density of 7,85 kg/dm3. 6 Classification and designation 6.1 Classification The steel grade S355 specified in this European Standard is classified as alloy quality steel and the steel grades S420 and S460 specified in this European Standard are classified as alloy special steels according to EN 10020. This standard includes the following grades: a) Group 1 grades with few changes from EN 10025 Parts 1, 3 and 4 and EN 10210-1: (minor changes to chemical analysis, CEV and impact requirements only); b) Groups 2 and 3 grades substantially modified from EN 10025 Parts 1, 3 and 4 and EN 10210-1 including qualities with enhanced through-thickness ductility. 6.2 Designation For the steel grades covered by this European Standard the steel names are based on EN 10027-1. The steel numbers are allocated in accordance with EN 10027-2. The designation consists of: a) the number of this European Standard i.e. EN 10225; b) the symbol S; c) the indication of the minimum specified yield strength for thicknesses ≤ 16 mm expressed in MPa; d) the letter G, followed by the relevant digit(s) characterizing the steel grade; e) where applicable, the letter indicating the delivery condition i.e. +N, +M or +QT (see 7.3). SIST EN 10225:2009
EN 10225:2009 (E) 12 7 Manufacturing process 7.1 Steel manufacturing process The steels shall be made by the basic oxygen or basic electric arc furnace process. All steels shall be fully killed and made to fine grain practice. In addition, steels of group 3 shall be vacuum degassed or ladle refined. See option 2. 7.2 Thickness limits and segregation control 7.2.1 For concast steels of groups 2 and 3, provided that the resultant products comply with all the relevant requirements of this European Standard, the maximum thickness of product from the continuous casting process shall be at the manufacturer's discretion. See option 3. 7.2.2 The minimum rolling reduction ratio of concast material for plate shall be 4:1 except for piling where it shall be 3:1. See option 4. 7.2.3 Intermediate or finished products, produced by the continuous casting route shall be examined for centre line segregation in accordance with the manufacturer’s procedures and as agreed by the purchaser. This does not apply to seamless hollow sections. See option 2. 7.3 Delivery condition 7.3.1 Plates of group 1 Plates shall be supplied in the furnace normalized/normalized rolled (+N) or thermomechanically rolled (+M) condition. The customer shall specify the appropriate grade at the time of enquiry and order. Delivery conditions (+N) and (+M) are limited to a maximum thickness of 40 mm. See option 5. Examples: a) Plate to grade S355G2+N
Plate with few changes from EN 10025-3 and with minimum specified Re = 355 MPa and impact values
verified at –20 °C, supplied in the normalized or normalized rolled condition. b) Plate to grade S355G6+M
Plate with few changes from EN 10025-4 and with minimum specified Re = 355 MPa and impact values
verified at –40 °C, supplied in the thermomechanically rolled condition. 7.3.2 Plates of groups 2 and 3 Plates shall be supplied in the furnace normalized (+N), thermomechanically rolled (+M) or quenched and tempered (+QT) condition. The customer shall specify the appropriate grade at the time of enquiry and order. SIST EN 10225:2009
EN 10225:2009 (E) 13 Delivery condition (+N) is limited to a maximum thickness of 150 mm and delivery conditions (+M) and (+QT) to 100 mm. See option 5. EXAMPLE a) Plate to grade S355G7+N (or S355G7+M)
Plate substantially modified from EN 10025-3 (or EN 10025-4) and with minimum specified Re = 355 MPa and impact values
verified at –40 °C, supplied in the normalized or normalized rolled (or thermomechanically rolled) condition. NOTE T
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