SIST EN 10025-2:2019
(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 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).
Warmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für unlegierte Baustähle
Dieses Dokument legt die technischen Lieferbedingungen für Flach- und Langerzeugnisse sowie für zur Weiterverarbeitung zu Flach- und Langerzeugnissen vorgesehenes Halbzeug aus warmgewalzten unlegierten Qualitätsstählen in den Sorten und Gütegruppen nach den Tabellen 1 bis 5 (chemische Zusammensetzung) und den Tabellen 6 bis 8 (mechanische Eigenschaften) in den in 6.3 angegebenen Lieferzuständen fest. Drei Maschinenbaustähle sind ebenfalls in diesem Dokument enthalten (siehe Tabellen 2 und 4) (chemische Zusammensetzung) und Tabelle 7 (mechanische Eigenschaften). Dieses Dokument gilt nicht für Hohlprofile für das Bauwesen (siehe EN 10210-1 und EN 10219-1) und Rohre.
Die technischen Lieferbedingungen gelten für:
- Dicken ≥ 3 mm und ≤ 150 mm für Langerzeugnisse aus den Stahlsorten S460JR, S460J0, S460J2, S460K2 und S500J0;
- Dicken ≤ 400 mm für Flacherzeugnisse aus Gütegruppen JR, J0, J2 und K2;
- Dicken ≤ 250 mm für Flach- und Langerzeugnisse aus allen übrigen Sorten und Gütegruppen.
Die in diesem Dokument spezifizierten Stähle sind nicht für eine Wärmebehandlung vorgesehen. Ausgenommen davon sind Erzeugnisse, die im Lieferzustand +N geliefert werden. Spannungsarmglühen ist zulässig. Erzeugnisse im Lieferzustand +N können nach der Lieferung warm umgeformt und/oder normalgeglüht werden (siehe Abschnitt 3).
Die Anwendung auf Halbzeug zur Herstellung von Walzstahlfertigerzeugnissen nach diesem Dokument sollte zum Zeitpunkt der Bestellung besonders vereinbart werden. Zum Zeitpunkt der Bestellung können auch besondere Vereinbarungen über die chemische Zusammensetzung im Rahmen der in den Tabellen 1 und 2 festgelegten Grenzwerte getroffen werden.
Bei bestimmten Stahlsorten und Erzeugnisformen darf die Eignung für besondere Verwendung zum Zeitpunkt der Bestellung vereinbart werden (siehe 7.4.2, 7.4.3 und Tabelle 9).
Produits laminés à chaud en aciers de construction - Partie 2 : Conditions techniques de livraison pour les aciers de construction non alliés
Le présent document spécifie les conditions techniques de livraison des produits plats et longs et des demi-produits destinés à être transformés en produits plats et longs en aciers non alliés de qualité laminés à chaud, dans les nuances et qualités données dans les Tableaux 1 à 5 (composition chimique) et les Tableaux 6 à 8 (caractéristiques mécaniques), dans les conditions de livraison habituelles spécifiées en 6.3. Trois aciers de construction mécanique sont également spécifiés dans le présent document (voir Tableaux 2 et 4) (composition chimique) et Tableau 7 (caractéristiques mécaniques)). Le présent document ne s’applique pas aux profils creux de construction (voir EN 10210-1 et EN 10219-1) et aux tubes.
Les conditions techniques de livraison s'appliquent aux :
- épaisseurs ≥ 3 mm et ≤ 150 mm pour les produits longs des nuances d'acier S460JR, J0, J2, K2 et S500J0 ;
- épaisseurs ≤ 400 mm pour les produits plats des qualités JR, J0, J2 et K2 ;
- épaisseurs ≤ 250 mm pour les produits plats et longs de toutes les autres nuances et qualités.
Les aciers spécifiés dans le présent document ne sont pas destinés à subir un traitement thermique, à l'exception des produits livrés à l'état +N. La relaxation des contraintes est admise. Les produits livrés à l'état +N peuvent être formés à chaud et/ou normalisés après livraison (voir Article 3).
Le présent document prévoit que les demi-produits, qui doivent être transformés en produits finis laminés conformes au présent document, fassent l'objet d'un accord particulier au moment de la commande. La composition chimique peut également faire l'objet d'un accord au moment de la commande, toutefois il convient que les valeurs soient dans les limites indiquées dans les Tableaux 1 et 2.
Pour certaines nuances et formes de produits, l'aptitude à des applications particulières sont spécifiées au moment de la commande, (voir 7.4.2 et 7.4.3 et Tableau 9).
Vroče valjani izdelki iz konstrukcijskih jekel - 2. del: Tehnični dobavni pogoji za nelegirana konstrukcijska jekla
2. del tega dokumenta poleg 1. dela določa tehnične dobavne pogoje za ploske in dolge izdelke ter polizdelke, ki so namenjeni nadaljnji predelavi v ploske in dolge vroče valjane izdelke iz nelegiranega jekla v razredih ter z lastnostmi, podanimi v preglednicah od 2 do 6 (kemična sestava) in preglednicah od 7 do 9 (mehanske lastnosti) v dobavnih pogojih, ki so podani v točki 6.3. V tem dokumentu so podana tudi tri inženirska jekla (glej preglednici 3 in 5 (kemična sestava) ter preglednico 8 (mehanske lastnosti)). Ta dokument se ne uporablja za votle konstrukcijske profile in cevi (glej standarda EN 10210-1 in EN 10219-1).
Tehnični dobavni pogoji veljajo za debeline > 3 mm in < 150 mm za dolge izdelke iz jekla razreda S450J0. Tehnični dobavni pogoji veljajo za debeline < 250 mm za ploske in dolge izdelke iz jekla ostalih razredov in kakovosti. Poleg tega, da tehnični pogoji veljajo za ploske izdelke kakovosti J2 in K2, veljajo tudi za debeline < 400 mm.
Izdelki iz jekla razredov S185, E295, E335 in E360 ne smejo biti označeni z oznako CE.
Jekla iz tega 2. dela niso predvidena za toplotno obdelavo, razen izdelkov, dobavljenih v stanju dobave +N. Kaljenje za zmanjšanje napetosti je dovoljeno (glej tudi OPOMBO v točki 7.3.1.1 standarda EN 10025-1:2004). Izdelke, dobavljene v stanju +N, je mogoče po dostavi vroče oblikovati in/ali normalizirati (glej točko 3).
OPOMBA 1: Polizdelki, ki jih je treba pretvoriti v valjane končne izdelke v skladu s tem dokumentom, naj bi bili v času povpraševanja in naročila predmet posebnega dogovora. O kemični sestavi se je prav tako mogoče dogovoriti v času naročila, vendar naj bi bile vrednosti v mejah, določenih v preglednicah 2 in 3.
OPOMBA 2: Pri nekaterih razredih in oblikah izdelkov se lahko primernost uporabe določi v času povpraševanja in naročila (glej 7.4.2, 7.4.3 in preglednico 10).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 10025-2:2019
01-oktober-2019
Nadomešča:
SIST EN 10025-2:2005
SIST EN 10025-2:2005/AC:2005
Vroče valjani izdelki iz konstrukcijskih jekel - 2. del: Tehnični dobavni pogoji za
nelegirana konstrukcijska jeklaHot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy
structural steelsWarmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für
unlegierte BaustähleProduits laminés à chaud en aciers de construction - Partie 2 : Conditions techniques de
livraison pour les aciers de construction non alliésTa slovenski standard je istoveten z: EN 10025-2:2019
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.45 Nelegirana jekla Non-alloyed steels
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
SIST EN 10025-2:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 10025-2:2019
EN 10025-2
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2019
EUROPÄISCHE NORM
ICS 77.140.10; 77.140.45; 77.140.50 Supersedes EN 10025-2:2004
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 - Warmgewalzte Erzeugnisse aus Baustählen - Teil 2:
Partie 2 : Conditions techniques de livraison pour les Technische Lieferbedingungen für unlegierte
aciers de construction non alliés BaustähleThis European Standard was approved by CEN on 16 June 2019.
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 CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10025-2:2019 E
worldwide for CEN national Members.---------------------- Page: 3 ----------------------
SIST EN 10025-2:2019
EN 10025-2:2019 (E)
Contents Page
European foreword ...................................................................................................................................................... 4
1 Scope .................................................................................................................................................................... 6
2 Normative references .................................................................................................................................... 6
3 Terms and definitions ................................................................................................................................... 8
4 Classification and designation ................................................................................................................... 9
4.1 Classification .................................................................................................................................................... 9
4.1.1 Main quality classes ....................................................................................................................................... 9
4.1.2 Grades and qualities ...................................................................................................................................... 9
4.2 Designation ....................................................................................................................................................... 9
5 Information to be supplied by the purchaser ....................................................................................... 9
5.1 Mandatory information ................................................................................................................................ 9
5.2 Options .............................................................................................................................................................. 10
6 Manufacturing process ............................................................................................................................... 10
6.1 Steel making process ................................................................................................................................... 10
6.2 Deoxidation ..................................................................................................................................................... 10
6.3 Delivery conditions ...................................................................................................................................... 10
7 Requirements ................................................................................................................................................. 11
7.1 General ............................................................................................................................................................. 11
7.2 Chemical composition ................................................................................................................................. 11
7.3 Mechanical properties ................................................................................................................................ 12
7.3.1 General ............................................................................................................................................................. 12
7.3.2 Impact properties ......................................................................................................................................... 12
7.3.3 Improved deformation properties perpendicular to the surface ............................................... 12
7.4 Technological properties ........................................................................................................................... 13
7.4.1 Weldability ...................................................................................................................................................... 13
7.4.2 Formability and flame straightening ..................................................................................................... 13
7.4.3 Hot-dip zinc-coating ..................................................................................................................................... 14
7.4.4 Machinability .................................................................................................................................................. 14
7.5 Surface properties ........................................................................................................................................ 14
7.5.1 Strip ................................................................................................................................................................... 14
7.5.2 Plates and wide flats .................................................................................................................................... 14
7.5.3 Sections ............................................................................................................................................................. 14
7.5.4 Bars and rods ................................................................................................................................................. 15
7.6 Internal soundness ....................................................................................................................................... 15
7.7 Dimensions, tolerances on dimensions and shape, mass............................................................... 15
8 Inspection ........................................................................................................................................................ 15
8.1 Type of inspection and inspection document ..................................................................................... 15
8.2 Content of inspection document ............................................................................................................. 16
8.3 Tests to be carried out for specific inspection ................................................................................... 16
9 Frequency of testing and preparation of samples and test pieces .............................................. 16
9.1 Frequency of testing .................................................................................................................................... 16
9.1.1 Chemical analysis .......................................................................................................................................... 16
9.1.2 Mechanical tests ............................................................................................................................................ 16
9.2 Preparation of samples and test pieces ................................................................................................ 17
9.2.1 Selection and preparation of samples for chemical analysis ........................................................ 17
9.2.2 Location of samples and orientation of test pieces for mechanical tests ................................. 17
9.2.3 Preparation of test pieces for mechanical tests ................................................................................. 17
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EN 10025-2:2019 (E)
9.3 Identification of samples and test pieces ............................................................................................. 18
10 Test methods .................................................................................................................................................. 18
10.1 Chemical analysis ......................................................................................................................................... 18
10.2 Mechanical tests ............................................................................................................................................ 18
10.2.1 Tensile test ...................................................................................................................................................... 18
10.2.2 Impact test ...................................................................................................................................................... 19
10.3 Ultrasonic testing ......................................................................................................................................... 19
10.4 Retests .............................................................................................................................................................. 19
11 Marking, labelling, packaging .................................................................................................................. 19
12 Complaints ...................................................................................................................................................... 20
13 Options ............................................................................................................................................................. 20
Annex A (normative) Location of samples and test pieces ........................................................................... 36
Annex B (informative) List of Options of EN 10025-2 to −6 ......................................................................... 39
Bibliography ................................................................................................................................................................. 41
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EN 10025-2:2019 (E)
European foreword
This document (EN 10025-2:2019) has been prepared by Technical Committee CEN/TC 459/SC 3
“Structural steels other than reinforcement”, 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 February 2020 and conflicting national standards shall
be withdrawn at the latest by February 2020.Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 10025-2:2004.This document consists of the following parts, under the general title Hot rolled products of structural
steels:— Part 1: General technical delivery conditions
— Part 2: Technical delivery conditions for non-alloy structural steels
— 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 conditionFor a short transition period, there will be a coexistence of EN 10025-1:2004 with EN 10025-2:2019 to
EN 10025−6:2019, since the new EN 10025-1 has to fulfil the requirements of the CPR and will
therefore be published later. For this short transition period up-to-the publication of the next edition of
part 1 the following is to be taken into account for EN 10025-1:2004:a) all dated and undated references to EN 10025-1:2004 to EN 10025−6:2004 are unchanged to this
version with following exception: In 9.2.2.1 the references are 8.3.1 and 8.3.2 instead of 8.4.1 and
8.4.2;b) Clauses 5, 12 and 13 of EN 10025-1:2004 are no longer relevant.
The main changes with respect to the previous edition are listed below:
a) part 2 is now a stand-alone standard for technical delivery conditions including the preparation of
samples and test pieces, the test methods, the marking, labelling and packaging and the drawings;
b) for applications under the CPR, this document and part 1 are used together;c) requirements for elements not definded were added to 7.2.1 and 7.2.2;
d) Option 33 was added, Options 9 and 21 were deleted;
e) Si-content in 7.2.5 was changed;
f) 7.4.3 concerning hot-dip zinc coating was modified;
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EN 10025-2:2019 (E)
g) key to Figure A.1 was updated;
h) steel grade S450 was deleted and steel grades S460 and S500 were added;
i) Annex B concerning the corresponding EURONORMS was deleted;
j) references were updated and the document was editorially revised.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Republic of North Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.---------------------- Page: 7 ----------------------
SIST EN 10025-2:2019
EN 10025-2:2019 (E)
1 Scope
This document specifies the technical delivery conditions for flat and long products as well as 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 1 to 5 (chemical composition) and Tables
6 to 8 (mechanical properties) in the usual delivery conditions as given in 6.3. Three engineering steels
are also specified in this document (see Tables 2 and 4) (chemical composition) and Table 7
(mechanical properties). This document does not apply to structural hollow sections (see EN 10210-1
and EN 10219-1) and tubes.The technical delivery conditions apply to:
— thicknesses ≥ 3 mm and ≤ 150 mm for long products of steel grade S460JR, J0, J2, K2 and S500J0;
— thicknesses ≤ 400 mm for flat products of qualities JR, J0, J2 and K2;— thicknesses ≤ 250 mm for flat and long products of all other grades and qualities.
The steels specified in this document are not intended to be heat treated except products delivered in
the delivery condition +N. Stress relieving is accepted. Products delivered in +N condition can be hot
formed and/or normalized after delivery (see Clause 3).This document foresees that semi-finished products which are to be converted to rolled finished
products conforming to this document are the subject of special agreements at the time of the order.
The chemical compositions are also agreed to at the time of the order; the values are within the limits of
Tables 1 and 2.For certain grades and product forms suitability for particular applications are specified at the time of
the order (see 7.4.2, 7.4.3 and Table 9).2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1011-2, Welding — Recommendations for welding of metallic materials — Part 2: Arc welding of
ferritic steelsEN 10017, Steel rod for drawing and/or cold rolling — Dimensions and tolerances
EN 10020:2000, Definition and classification of grades of steel
EN 10021, General technical delivery conditions for steel products
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 10027-1, Designation systems for steels — Part 1: Steel namesEN 10027-2, Designation systems for steels — Part 2: Numerical system
EN 10029, Hot-rolled steel plates 3 mm thick or above — Tolerances on dimensions and shape
EN 10034, Structural steel I and H sections — Tolerances on shape and dimensionsEN 10048, Hot rolled narrow steel strip — Tolerances on dimensions and shape
EN 10051, Continuously hot-rolled strip and plate/sheet cut from wide strip of non-alloy and alloy steels
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EN 10055, Hot rolled steel equal flange tees with radiused root and toes — Dimensions and tolerances on
shape and dimensionsEN 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 and steel wide flats for general purposes — Dimensions and tolerances
on shape and dimensionsEN 10059, Hot rolled square steel bars for general purposes — Dimensions and tolerances on shape and
dimensionsEN 10060, Hot rolled round steel bars for general purposes — Dimensions and tolerances on shape and
dimensionsEN 10061, Hot rolled hexagon steel bars for general purposes — Dimensions and tolerances on shape and
dimensionsEN 10067, Hot rolled bulb flats — Dimensions and tolerances on shape, dimensions and mass
EN 10079, Definition of steel productsEN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection
method)EN 10163-1, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections
— Part 1: General requirementsEN 10163-2, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections
— Part 2: Plate and wide flatsEN 10163-3, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections
— Part 3: SectionsEN 10164, Steel products with improved deformation properties perpendicular to the surface of the
product — Technical delivery conditionsEN 10168, Steel products — Inspection documents — List of information and description
EN 10204, Metallic products — Types of inspection documentsEN 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 10308, Non destructive testing — Ultrasonic testing of steel barsEN 10315, Routine method for analysis of high alloy steel by X-ray Fluorescence Spectrometry (XRF) by
using a near by techniqueCR 10320, Optical emission analysis of low alloy steels (routine method) — Method for determination of C,
Si, S, P, Mn, Cr, Ni and CuCEN/TR 10347, Guidance for forming of structural steels in processing
EN 10363, Continuously hot-rolled patterned steel strip and plate/sheet cut from wide strip — Tolerances
on dimensions and shapeEN 10365, Hot rolled steel channels, I and H sections — Dimensions and masses
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EN 10025-2:2019 (E)
EN ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method (ISO 148-1)
EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for
mechanical testing (ISO 377)EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels (ISO 2566)
EN ISO 6892-1:2016, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1:2016)EN ISO 9443, Surface quality classes for hot-rolled bars and wire rod (ISO 9443)
EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition (ISO 14284)EN ISO 14713-2:2009, Zinc coatings — Guidelines and recommendations for the protection against
corrosion of iron and steel in structures — Part 2: Hot dip galvanizing (ISO 14713-2:2009)
EN ISO 15350, Steel and iron — Determination of total carbon and sulfur content — Infrared absorption
method after combustion in an induction furnace (routine method) (ISO 15350)3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10079 and the following
apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
normalized rolled
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 normalizingNote 1 to entry: In international publications for both the normalizing rolling, as well as the 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.3.2
as-rolled
+AR
conventional hot rolling without any normalized rolling or thermomechanical rolling and/or heat
treatment like normalizing or quenching3.3
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
aloneNote 1 to entry: 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 2 to entry: In some publications the word TMCP (Thermomechanical Control Process) is also used.
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EN 10025-2:2019 (E)
3.4
Normalizing
heat treatment consisting of austenitizing followed by air cooling
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 10020.4.1.2 Grades and qualities
This document specifies nine steel grades S185, S235, S275, S355, S460, S500, E295, E335 and E360.
The steel grades S235 and S275 may be supplied in qualities JR, J0 and J2. The steel grades S355 and
S460 may be supplied in qualities JR, J0, J2 and K2. The steel grade S500 may be supplied in quality J0.
The qualities differ in specified impact energy requirements.For steel grades S185, E295 to E360 no requirements for impact energy are specified.
4.2 Designation4.2.1 For the steel grades covered by this document the steel names shall be allocated in accordance
with EN 10027-1; the steel numbers shall be allocated in accordance with EN 10027-2.
4.2.2 The designation shall consist of:— the number of this document (EN 10025-2);
— the 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 MPa;
— 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 9, 10, 11 and 12);— indication “+N”, “+AR” or “+M”, when the products are ordered and delivered in the condition +N,
+AR or +M (see 3.1, 3.2, 3.3, 3.4 and 6.3). The indication “+N”, “+AR” or “+M” shall also be added to
the steel name or the steel number.EXAMPLE Structural steel (S) with a specified minimum yield strength at room temperature of 355 MPa with
a minimum impact energy of 27 J at 0 °C (J0) and suitable for cold flanging (C), delivery condition +N (Option 19,
see Clause 13):EN 10025-2 - S355J0C+N
EN 10025-2 - 1.0554+N
5 Information to be supplied by the purchaser
5.1 Mandatory information
The following information shall be supplied by the purchaser at the time of the order:
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EN 10025-2:2019 (E)
a) quantity to be delivered;
b) product form and the number of the standard for dimensions and tolerances (see 2.2);
c) nominal dimensions and tolerances on dimensions and shape (see 7.7.1);d) steel designation (see 4.2.2);
e) additional requirements of inspection and testing and all required options (see 5.2 and Clause 13);
f) type of inspection document according to EN 10204 (see 8.1).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, see 5.1 a) to d) and f).6 Manufacturing process
6.1 Steel making process
The steel making process is at the discretion of the manufacturer with the exclusion of the open hearth
(Siemens-Martin) process.See Option 1, Clause 13, (details of manufacturing process).
6.2 Deoxidation
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). Theusual guideline is a minimum aluminium to nitrogen ratio of 2:1, when no other
nitrogen binding elements are present. Such other elements and their content
(% mass) shall be reported in the inspection document.
The method of deoxidation shall be as given in Tables 1 and 2.
6.3 Delivery conditions
Unless otherwise agreed upon, the delivery condition of long products and hot rolled strip can be +AR,
+N or +M at the manufacturer's discretion; the delivery condition for quarto plates can only be +AR or
+N at the manufacturer's discretion.See Option 19, Clause 13, (delivery condition +AR, +N or +M for long products and strip, +AR, +N for
quarto plates).If an inspection document is required (see 8.1) the delivery condition shall be indicated in it with its
specific symbol (+AR, +N or +M). In case the products are ordered in the delivery condition +AR, +N or
+M, the specific symbol (+AR, +N or +M) shall be added to the designation (see 4.2.2).
NOTE The requirements on the mechanical properties of the steel grades according to this d
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