SIST EN 10025-2:2005
(Main)Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels
Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels
Part 2 of this document, in addition to Part 1, specifies the technical delivery conditions for flat and long products and semi-finished products which are meant for further processing to flat and long products of hot rolled non-alloy quality steels in the grades and qualities given in Tables 2 to 6 (chemical composition) and Tables 7 to 9 (mechanical properties) in the delivery conditions as given in 6.3. Three engineering steels are also specified in this document (see Tables 3 and 5) (chemical composition) and Table 8 (mechanical properties). This document does not apply to structural hollow sections and tubes (see EN 10210-1 and EN 10219-1).
The technical delivery conditions apply to thicknesses 3 3 mm and L 150 mm for long products of steel grade S450J0. The technical delivery conditions apply to thicknesses L 250 mm for flat and long products of all other grades and qualities. In addition for flat products of qualities J2 and K2 the technical conditions apply to thicknesses L 400 mm.
Products made of steel grades S185, E295, E335 and E360 cannot be CE marked.
The steels specified in this Part 2 are not intended to be heat treated except products delivered in delivery condition +N. Stress relief annealing is permitted (see also the NOTE in 7.3.1.1 of EN 10025-1:2004). Products delivered in +N condition can be hot formed and/or normalized after delivery (see Clause 3).
NOTE 1 Semi-finished products which are to be converted to rolled finished products conforming to this document should be the subject of special agreement at the time of the enquiry and order. The chemical composition can also be agreed at the time of the order, however the values should be within the limits of Tables 2 and 3.
NOTE 2 For certain grades and product forms suitability for particular applications may be specified at the time of the enquiry and order (see 7.4.2, 7.4.3 and Table 10).
Warmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für unlegierte Baustähle
Teil 5 dieses Dokumentes legt ? zusätzlich zu Teil 1 ? die Anforderungen fest für Flach- und Langerzeugnisse aus
wetterfesten Baustählen in den Sorten und Gütegruppen nach den Tabellen 2 und 3 (chemische
Zusammensetzung) und den Tabellen 4 und 5 (mechanische Eigenschaften) im üblichen Lieferzustand nach 6.3.
Die lieferbaren Dicken der Erzeugnisse aus den in diesem Dokument erfassten Sorten und Gütegruppen sind in
Tabelle 1 angegeben.
Zusätzlich zu EN 10025-1:2004 sind die in diesem Dokument erfassten Stähle (mit den Einschränkungen nach
7.4.1) vorwiegend für die Verwendung bei Umgebungstemperaturen in geschweißten, geschraubten und
genieteten Bauteilen bestimmt, die einen erhöhten Widerstand gegen atmosphärische Korrosion aufweisen sollen.
Die in diesem Teil 5 erfassten Stähle sind, mit Ausnahme der Erzeugnisse im Lieferzustand +N, nicht für eine
Wärmebehandlung vorgesehen. Spannungsarmglühen ist zulässig (siehe auch die Anmerkung in
EN 10025-1:2004, 7.3.1.1). Im Zustand +N gelieferte Erzeugnisse dürfen nach der Lieferung warm umgeformt
und/oder normalgeglüht werden (siehe Abschnitt 3).
Produits laminés a chaud en aciers de construction - Partie 2: Conditions techniques de livraison pour les aciers de construction non alliés
Vroče valjani izdelki iz konstrukcijskih jekel – 2. del: Tehnični dobavni pogoji za nelegirana konstrukcijska jekla
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Warmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für unlegierte BaustähleProduits laminés a chaud en aciers de construction - Partie 2: Conditions techniques de livraison pour les aciers de construction non alliésHot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels77.140.50SROL]GHONLFlat steel products and semi-products77.140.45Nelegirana jeklaNon-alloyed steels77.140.10Jekla za toplotno obdelavoHeat-treatable steelsICS:Ta slovenski standard je istoveten z:EN 10025-2:2004SIST EN 10025-2:2005en01-januar-2005SIST EN 10025-2:2005SLOVENSKI
STANDARDSIST EN 10025:19961DGRPHãþD
SIST EN 10025-2:2005
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10025-2
November 2004 ICS 77.140.10; 77.140.45; 77.140.50
Supersedes EN 10025:1990
English version
Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels
Produits laminés à chaud en aciers de construction -Partie 2: Conditions techniques de livraison pour les aciers de construction non alliés
Warmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für unlegierte Baustähle This European Standard was approved by CEN on 1 April 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10025-2:2004: ESIST EN 10025-2:2005
EN 10025-2:2004 (E) 2 Contents Page Foreword.4 1 Scope.5 2 Normative references.5 2.1 General standards.5 2.2 Standards on dimensions and tolerances (see 7.7.1).6 2.3 Standards on testing.7 3 Terms and definitions.7 4 Classification and designation.7 4.1 Classification.7 4.1.1 Main quality classes.7 4.1.2 Grades and qualities.8 4.2 Designation.8 5 Information to be supplied by the purchaser.8 5.1 Mandatory information.8 5.2 Options.9 6 Manufacturing process.9 6.1 Steel making process.9 6.2 Deoxidation.9 6.3 Delivery conditions.9 7 Requirements.10 7.1 General.10 7.2 Chemical composition.10 7.3 Mechanical properties.10 7.3.1 General.10 7.3.2 Impact properties.11 7.3.3 Improved deformation properties perpendicular to the surface.11 7.4 Technological properties.11 7.4.1 Weldability.11 7.4.2 Formability.11 7.4.3 Suitability for hot-dip zinc-coating.12 7.4.4 Machinability.13 7.5 Surface properties.13 7.5.1 Strip.13 7.5.2 Plates and wide flats.13 7.5.3 Sections.13 7.5.4 Bars and rods.13 7.6 Internal soundness.13 7.7 Dimensions, tolerances on dimensions and shape, mass.14 8 Inspection.14 8.1 General.14 8.2 Type of inspection and inspection document.14 8.3 Frequency of testing.14 8.3.1 Sampling.14 8.3.2 Test units.14 8.3.3 Verification of chemical composition.15 8.4 Tests to be carried out for specific inspection.15 9 Preparation of samples and test pieces.15 SIST EN 10025-2:2005
EN 10025-2:2004 (E) 3 9.1 Selection and preparation of samples for chemical analysis.15 9.2 Location and orientation of samples and test pieces for mechanical tests.15 9.2.1 General.15 9.2.2 Preparation of samples.16 9.2.3 Preparation of test pieces.16 9.3 Identification of samples and test pieces.16 10 Test methods.16 10.1 Chemical analysis.16 10.2 Mechanical tests.16 10.3 Ultrasonic testing.16 10.4 Retests.16 11 Marking, labelling, packaging.16 12 Complaints.16 13 Options (see 5.2).17 Annex A (informative) List of corresponding former designations.32 Annex B (informative)
List of national standards which correspond with EURONORMS referenced.33 Bibliography.34
SIST EN 10025-2:2005
EN 10025-2:2004 (E) 4 Foreword This document (EN 10025-2:2004) has been prepared by Technical Committee ECISS/TC 10 “Structural steels - Grades and qualities”, the secretariat of which is held by NEN. 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 May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. This document supersedes EN 10025:1990 + A1:1993, Hot rolled products of non-alloy structural steels - Technical delivery conditions. The titles of the other Parts of this European Standard are: Part 1: General technical delivery conditions; Part 3: Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels; Part 4: Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels; Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance; Part 6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the EU Construction Products Directive (89/106/EEC). For relationship with the EU Construction Products Directive, see informative Annex ZA of EN 10025-1:2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
SIST EN 10025-2:2005
EN 10025-2:2004 (E) 5 1 Scope Part 2 of this document, in addition to Part 1, specifies the technical delivery conditions for flat and long products and semi-finished products which are meant for further processing to flat and long products of hot rolled non-alloy quality steels in the grades and qualities given in Tables 2 to 6 (chemical composition) and Tables 7 to 9 (mechanical properties) in the delivery conditions as given in 6.3. Three engineering steels are also specified in this document (see Tables 3 and 5) (chemical composition) and Table 8 (mechanical properties). This document does not apply to structural hollow sections and tubes (see EN 10210-1 and EN 10219-1). The technical delivery conditions apply to thicknesses ≥ 3 mm and ≤ 150 mm for long products of steel grade S450J0. The technical delivery conditions apply to thicknesses ≤ 250 mm for flat and long products of all other grades and qualities. In addition for flat products of qualities J2 and K2 the technical conditions apply to thicknesses ≤ 400 mm. Products made of steel grades S185, E295, E335 and E360 cannot be CE marked. The steels specified in this Part 2 are not intended to be heat treated except products delivered in delivery condition +N. Stress relief annealing is permitted (see also the NOTE in 7.3.1.1 of EN 10025-1:2004). Products delivered in +N condition can be hot formed and/or normalized after delivery (see Clause 3). NOTE 1 Semi-finished products which are to be converted to rolled finished products conforming to this document should be the subject of special agreement at the time of the enquiry and order. The chemical composition can also be agreed at the time of the order, however the values should be within the limits of Tables 2 and 3. NOTE 2 For certain grades and product forms suitability for particular applications may be specified at the time of the enquiry and order (see 7.4.2, 7.4.3 and Table 10). 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. 2.1 General standards EN 1011-2, Welding – Recommendations for welding of metallic materials - Part 2: Arc welding of ferritic steels. EN 10020, Definition and classification of grades of steel. EN 10025-1:2004, Hot rolled products of structural steels - Part 1: General technical delivery conditions. EN 10027-1, Designation systems for steels - Part 1: Steel names, principal symbols. EN 10027-2, Designation systems for steels - Part 2: Numerical system. EN 10163-1, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections – Part 1: General requirements. EN 10163-2, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections – Part 2: Plates and wide flats. EN 10163-3, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections – Part 3: Sections.
SIST EN 10025-2:2005
EN 10025-2:2004 (E) 6 EN 10164, Steel products with improved deformation properties perpendicular to the surface of the product - Technical delivery conditions. EN 10221, Surface quality classes for hot-rolled bars and rods - Technical delivery conditions. CR 10260, Designation systems for steels - Additional symbols.
2.2 Standards on dimensions and tolerances (see 7.7.1) EN 10017, Non-alloy steel rod for drawing and/or cold rolling – Dimensions and tolerances. EN 10024, Hot rolled taper flange I sections - Tolerances on shape and dimensions. 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 10048, Hot rolled narrow steel strip - Tolerances on dimensions and shape. EN 10051, Continuously hot-rolled uncoated plate, sheet and strip of non-alloy and alloy steels - Tolerances on dimensions and shape. EN 10055, Hot-rolled steel equal flange tees with radiused root and toes - Dimensions and tolerances on shape and dimensions. EN 10056-1, Structural steel equal and unequal leg angles - Part 1: Dimensions. EN 10056-2, Structural steel equal and unequal leg angles - Part 2: Tolerances on shape and dimensions. EN 10058, Hot rolled flat steel bars for general purposes - Dimensions and tolerances on shape and dimensions. EN 10059, Hot rolled square steel bars for general purposes - Dimensions and tolerances on shape and dimensions. EN 10060, Hot rolled round steel bars for general purposes - Dimensions and tolerances on shape and dimensions. EN 10061, Hot rolled hexagon steel bars for general purposes - Dimensions and tolerances on shape and dimensions. EN 10067, Hot rolled bulb flats - Dimensions and tolerances on shape, dimensions and mass. EN 10162, Cold rolled steel sections - Technical delivery conditions - Dimensional and cross-sectional tolerances. EN 10279, Hot rolled steel channels - Tolerances on shape and dimensions.
SIST EN 10025-2:2005
EN 10025-2:2004 (E) 7 2.3 Standards on testing EN 10160, Ultrasonic testing of steel flat product of thickness equal to or greater than 6 mm (reflection method). EN 10306, Iron and steel - Ultrasonic testing of H beams with parallel flanges and IPE beams. EN 10308, Non-destructive testing - Ultrasonic testing of steel bars. EN ISO 643, Steels – Micrographic determination of the apparent grain size (ISO 643:2003). 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10025-1:2004 and the following apply. 3.1 normalizing rolling rolling process in which the final deformation is carried out in a certain 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 The abbreviated form of this delivery condition is +N NOTE In international publications for both the normalizing rolling, as well as the thermo-mechanical 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. 3.2 as-rolled delivery condition without any special rolling and/or heat treatment condition. The abbreviated form of this delivery condition is +AR 3.3 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 Subsequent heating above 580 °C may lower the strength values. If temperatures above 580 °C are needed reference should be made to the supplier. 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. NOTE 3 In some publications the word TMCP (Thermomechanical Control Process) is also used. 4 Classification and designation 4.1 Classification 4.1.1 Main quality classes The steel grades specified in this document shall be classified as non-alloy quality steels according to EN 10020. SIST EN 10025-2:2005
EN 10025-2:2004 (E) 8 4.1.2 Grades and qualities This document specifies eight steel grades S185, S235, S275, S355, S450, E295, E335 and E360. They differ in their mechanical properties. The steel grades S235 and S275 may be supplied in qualities JR, J0 and J2. The steel grade S355 may be supplied in qualities JR, J0, J2 and K2. The steel grade S450 is supplied in quality J0. The qualities differ in specified impact energy requirements. 4.2 Designation 4.2.1 The designation shall be in accordance with EN 10025-1. NOTE For a list of corresponding former designations and the former designations from EN 10025:1990 and EN 10025:1990+A1:1993
see Annex A, Table A.1. 4.2.2 The designation shall consist of: − number of this document (EN 10025-2); − steel name or the steel number; the steel name consisting of: symbol S (for structural steel) or E (for engineering steel); indication of the minimum specified yield strength for thickness ≤ 16 mm expressed in MPa1); if applicable, the quality designation (see 4.1.2) in respect of specified impact energy values; if applicable, the additional symbol C for the suitability for the particular application (see Tables 10, 11, 12 and 13). indication "+N or +AR", when the products are ordered and delivered in the condition +N or +AR (see 3.1, 3.2 and 6.3). The indication "+N or +AR" shall also be added to the steel number. EXAMPLE Structural steel (S) with a specified minimum yield strength at ambient temperature of 355 MPa1), with a minimum impact energy value of 27 J at 0 ºC (J0) and suitable for cold flanging (C), delivery condition normalized rolled (or as rolled):
Steel EN 10025-2 - S355J0C+N (or +AR)
or
Steel EN 10025-2 - 1.0554+N (or +AR) 5 Information to be supplied by the purchaser 5.1 Mandatory information The information that shall be supplied by the purchaser at the time of the order is specified in EN 10025-1. In addition to EN 10025-1 the following information shall be supplied by the purchaser at the time of the order:
1) 1 MPa = 1 N/mm2. SIST EN 10025-2:2005
EN 10025-2:2004 (E) 9 g) whether products have to be submitted to specific or non-specific inspection and testing and which inspection document is required (see 8.2); h) whether the verification of the mechanical properties for the quality JR and the steel grades E295, E335 and E360 has to be carried out by cast or by lot (see 8.3.1.1). 5.2 Options A number of options are specified in Clause 13. In the event that the purchaser does not indicate his wish to implement any of these options, the supplier shall supply in accordance with the basic specification. 6 Manufacturing process 6.1 Steel making process The steel making process shall be in accordance with EN 10025-1. If specified at the time of the order the steel making process shall be reported to the purchaser, with the exception of steel S185. See option 1. 6.2 Deoxidation 6.2.1 The method of deoxidation shall be as given in Tables 2 and 3. 6.2.2 The deoxidation methods are designated as follows: a) Optional - Method at the manufacturer's discretion; b) FN - Rimming steel not permitted; c) FF - Fully killed steel containing nitrogen binding elements in amounts sufficient to bind the available nitrogen (for example min. 0,020 % total aluminium). The usual guideline is a minimum aluminium to nitrogen ratio of 2:1, when no other nitrogen binding elements are present. Such other elements shall be reported in the inspection document. 6.3 Delivery conditions The delivery condition of long products and continuous mill flat products can be +AR, +N or +M at the manufacturer's discretion. The delivery condition of quarto mill products can only be +AR or +N at the manufacturer's discretion. The delivery condition +AR or +N can be ordered. See option 19A. If an inspection document is required (see 8.2) the delivery condition shall be indicated in it with its specific symbol (+N, +AR or +M). In case the products are ordered in the delivery condition +N or +AR the specific symbol (+N or +AR) shall be added to the designation (see 4.2.2). SIST EN 10025-2:2005
EN 10025-2:2004 (E) 10 7 Requirements 7.1 General The following requirements apply when sampling, preparation of test pieces and testing specified in Clauses 8, 9 and 10 are carried out. 7.2 Chemical composition 7.2.1 The chemical composition determined by ladle analysis shall comply with the specified values of Tables 2 and 3. 7.2.2 The upper limits applicable for the product analysis are given in Tables 4 and 5. The product analysis shall be carried out when specified at the time of the order. See option 2. 7.2.3 The maximum carbon equivalent values for the grades S235, S275, S355 and S450, based on the ladle analysis, given in Table 6 shall apply. For the carbon equivalent value formula see 7.2.3 of EN 10025-1:2004. 7.2.4 For all S235, S275 and S355 qualities the following additional chemical requirement can be agreed at the time of the order: − Copper-content between 0,25 % and 0,40 % on ladle analysis and between 0,20 % and 0,45 % on product analysis. In this case the maximum carbon equivalent value of Table 6 shall be increased by 0,02 %. See option 20. 7.2.5 When products of grade S275 and S355 are supplied with a control on Si e.g. for hot-dip zinc-coating so that there could be a need to increase the content of other elements like C and Mn to achieve the required tensile properties, the maximum carbon equivalent values of Table 6 shall be increased as follows: − for Si ≤ 0,030 %, increase CEV by 0,02 %; − for Si ≤ 0,25 %, increase CEV by 0,01 %. 7.3 Mechanical properties 7.3.1 General 7.3.1.1 Under the inspection and testing conditions as specified in Clauses 8, 9 and 10 and in the delivery condition as specified in 6.3 the mechanical properties shall comply with the values given in Tables 7, 8 and 9. 7.3.1.2 For products ordered and supplied in the normalized or normalized rolled condition (see 6.3) the mechanical properties shall comply with Tables 7, 8 and 9 in the normalized or normalized rolled condition as well as after normalizing by heat treatment after delivery. 7.3.1.3 For products supplied as-rolled for normalizing by the purchaser the samples shall be normalized, if requested at the time of the order. The values obtained from the normalized samples shall comply with this document. The results shall be reported in the inspection document. NOTE The results of these tests do not represent the properties of the supplied products but indicate the properties which can be achieved after correct normalizing. SIST EN 10025-2:2005
EN 10025-2:2004 (E) 11 7.3.1.4 For flat products the nominal thickness applies. For long products of irregular section the nominal thickness of that part from which the samples are taken applies (see Annex A of EN 10025-1:2004). 7.3.2 Impact properties 7.3.2.1 The verification of the impact energy value shall be carried out in accordance with EN 10025-1. 7.3.2.2 The impact properties of quality JR products are verified only when specified at the time of the order. See option 3. 7.3.2.3 For products of quality J2 and K2 with nominal thickness < 6 mm the ferritic grain size shall be ≥ 6, verified by the method as described in EN ISO 643, if specified at the time of the order. See option 21. When aluminum is used as the grain refining element, the grain size requirement shall be deemed to be fulfilled if on ladle analysis the aluminum content is not less than 0,020 % total aluminum or alternatively, 0,015 % acid soluble aluminum. In this case verification of the grain size is not required, but the aluminum content shall be indicated in the inspection document. 7.3.3 Improved deformation properties perpendicular to the surface If agreed at the time of the order products of qualities J2 and K2 shall comply with one of the requirements of EN 10164. See option 4. 7.4 Technological properties 7.4.1 Weldability 7.4.1.1 General requirements for welding of the steels of the qualities JR, J0, J2 and K2 shall be given in EN 1011-2. NOTE With increasing product thickness and strength level cold cracking can occur. Cold cracking is caused by the following factors in combination: − the amount of diffusible hydrogen in the weld metal; − a brittle structure of the heat affected zone; − significant tensile stress concentrations in
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