SIST EN 10025-4:2019+A1:2023
(Main)Hot rolled products of structural steels - Part 4: Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels
Hot rolled products of structural steels - Part 4: Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels
This document specifies technical delivery conditions for flat and long products of hot rolled weldable fine grain structural steels in the thermomechanical rolled condition in the grades and qualities given in Tables 1 to 3 (chemical composition) and Tables 4 to 6 (mechanical properties) in thickness ≤ 150 mm.
The steels specified in this document are especially intended for use in heavily loaded parts of welded structures such as, bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and low temperatures.
Warmgewalzte Erzeugnisse aus Baustählen - Teil 4: Technische Lieferbedingungen für thermomechanisch gewalzte schweißgeeignete Feinkornbaustähle
Produits laminés à chaud en aciers de construction - Partie 4 : Conditions techniques de livraison pour les aciers de construction soudable à grains fins obtenus par laminage thermomécanique
Le présent document spécifie les conditions techniques de livraison des produits plats et longs en aciers de construction soudables à grains fins à l'état laminé thermomécaniquement, dans les nuances et qualités données dans les Tableaux 1 à 3 (composition chimique) et les Tableaux 4 à 6 (caractéristiques mécaniques), d'épaisseur ≤ 150 mm.
Les aciers spécifiés dans le présent document sont destinés en particulier à l'emploi dans les éléments hautement sollicités des constructions soudées telles que ponts, vannes de décharge, réservoirs de stockage, réservoirs d'approvisionnement en eau, etc., pour service à température ambiante et à basses températures.
Vroče valjani izdelki iz konstrukcijskih jekel - 4. del: Tehnični dobavni pogoji za termomehansko obdelana valjana variva drobnozrnata konstrukcijska jekla (vključno z dopolnilom A1)
Ta dokument določa tehnične dobavne pogoje za ploske in dolge izdelke iz termomehansko obdelanih valjanih variv drobnozrnatega konstrukcijskega jekla v razredih in kakovosti, navedenih v preglednicah od 1 do 3 (kemična sestava) in preglednicah od 4 do 6 (mehanske lastnosti) debeline < 150 mm.
Poleg namena uporabe iz tega dokumenta so jekla v tem dokumentu namenjena posebej za uporabo v močno obremenjenih delih varjenih konstrukcij, kot so mostovi, zapornice, shranjevalni rezervoarji, rezervoarji za oskrbo z vodo itd., ki se uporabljajo pri temperaturi okolice in nizki temperaturi.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 10025-4:2019+A1:2023
01-marec-2023
Vroče valjani izdelki iz konstrukcijskih jekel - 4. del: Tehnični dobavni pogoji za
termomehansko obdelana valjana variva drobnozrnata konstrukcijska jekla
(vključno z dopolnilom A1)
Hot rolled products of structural steels - Part 4: Technical delivery conditions for
thermomechanical rolled weldable fine grain structural steels
Warmgewalzte Erzeugnisse aus Baustählen - Teil 4: Technische Lieferbedingungen für
thermomechanisch gewalzte schweißgeeignete Feinkornbaustähle
Produits laminés à chaud en aciers de construction - Partie 4 : Conditions techniques de
livraison pour les aciers de construction soudable à grains fins obtenus par laminage
thermomécanique
Ta slovenski standard je istoveten z: EN 10025-4:2019+A1:2022
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
SIST EN 10025-4:2019+A1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 10025-4:2019+A1:2023
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SIST EN 10025-4:2019+A1:2023
EN 10025-4:2019+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 77.140.10; 77.140.50 Supersedes EN 10025-4:2019
English Version
Hot rolled products of structural steels - Part 4: Technical
delivery conditions for thermomechanical rolled weldable
fine grain structural steels
Produits laminés à chaud en aciers de construction - Warmgewalzte Erzeugnisse aus Baustählen - Teil 4:
Partie 4 : Conditions techniques de livraison pour les Technische Lieferbedingungen für thermomechanisch
aciers de construction soudable à grains fins obtenus gewalzte schweißgeeignete Feinkornbaustähle
par laminage thermomécanique
This European Standard was approved by CEN on 16 June 2019 and includes Amendment 1 approved by CEN on 25 October
2022.
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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10025-4:2019+A1:2022 E
worldwide for CEN national Members.
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SIST EN 10025-4:2019+A1:2023
EN 10025-4:2019+A1:2022 (E)
Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Classification and designation . 8
4.1 Classification . 8
4.1.1 Main quality classes . 8
4.1.2 Grades and qualities . 8
4.2 Designation . 9
5 Information to be supplied by the purchaser . 9
5.1 Mandatory information . 9
5.2 Options . 9
6 Manufacturing process . 9
6.1 Steel making process . 9
6.2 Deoxidation and grain structure . 10
6.3 Delivery conditions . 10
7 Requirements . 10
7.1 General . 10
7.2 Chemical composition . 10
7.3 Mechanical properties . 11
7.3.1 General . 11
7.3.2 Impact properties . 11
7.3.3 Improved deformation properties perpendicular to the surface . 11
7.4 Technological properties . 12
7.4.1 Weldability . 12
7.4.2 Formability and flame straightening . 12
7.4.3 Hot-dip zinc-coating . 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 Type of inspection and inspection document . 14
8.2 Content of inspection document . 14
8.3 Tests to be carried out . 15
9 Frequency of testing and preparation of samples and test pieces . 15
9.1 Frequency of testing. 15
9.1.1 Chemical analysis . 15
9.1.2 Mechanical tests . 15
9.2 Preparation of samples and test pieces . 15
9.2.1 Selection and preparation of samples for chemical analysis . 15
9.2.2 Location of samples and orientation of test pieces for mechanical tests . 16
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9.2.3 Preparation of test pieces for mechanical tests . 16
9.3 Identification of samples and test pieces . 17
10 Test methods . 17
10.1 Chemical analysis . 17
10.2 Mechanical tests . 17
10.2.1 Tensile test . 17
10.2.2 Impact test . 17
10.3 Ultrasonic testing . 18
10.4 Retests . 18
11 Marking, labelling, packaging . 18
12 Complaints . 18
13 Options . 19
Annex A (normative) Location of samples and test pieces . 25
Annex B (informative) List of Options of EN 10025-2 to −6 . 28
Bibliography . 30
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SIST EN 10025-4:2019+A1:2023
EN 10025-4:2019+A1:2022 (E)
European foreword
This document (EN 10025-4:2019+A1:2022) has been prepared by Technical Committee
CEN/TC 459/SC 3 “Structural steels other than reinforcements”, 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 June 2023 and conflicting national standards shall be withdrawn at
the latest by June 2023.
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 10025-4:2019".
This document includes Amendment 1 approved by CEN on 25 October 2022.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
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 condition
For a short transition period there will be a coexistence of EN 10025-1:2004 with EN 10025-2:2019 to
!EN 10025-6:2019+A1:2022", 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 EN 10025−4:2004" are listed below:
a) part 4 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, Option 3 was renumbered to Option 24 and Option 9 was deleted;
e) Si-content in 7.2.4 was changed;
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f) 7.4.3 concerning hot-dip zinc coating was modified;
g) key to Figure A.1 was updated;
h) steel grade S500M was added;
i) Annex B concerning the corresponding EURONORMS deleted;
j) references were updated and document editorial revised.
!In comparison with the previous version EN 10025-4:2019, the following modifications have been
made:
— references were updated in the European foreword;
— a sentence was added to 9.2.3.2."
Any feedback and questions on this document should be directed to the users’ national standards body. A
complete listing of these bodies can be found on the CEN website.
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, 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, Türkiye and the United Kingdom.
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SIST EN 10025-4:2019+A1:2023
EN 10025-4:2019+A1:2022 (E)
1 Scope
This document specifies technical delivery conditions for flat and long products of hot rolled weldable fine
grain structural steels in the thermomechanical rolled condition in the grades and qualities given in Tables
1 to 3 (chemical composition) and Tables 4 to 6 (mechanical properties) in thickness ≤ 150 mm.
The steels specified in this document are especially intended for use in heavily loaded parts of welded
structures such as, bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and
low temperatures.
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
steels
EN 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 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 and shape
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 strip and plate/sheet cut from wide 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 and steel wide flats 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
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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 10079, Definition of steel products
EN 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 requirements
EN 10163-2, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections —
Part 2: Plate and wide flats
EN 10163-3, Delivery requirements for surface condition 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 10168, Steel products — Inspection documents — List of information and description
EN 10204, Metallic products — Types of inspection documents
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 10308, Non destructive testing — Ultrasonic testing of steel bars
EN 10315, Routine method for analysis of high alloy steel by X-ray Fluorescence Spectrometry (XRF) by using
a near by technique
CR 10320, Optical emission analysis of low alloy steels (routine method) — Method for determination of C, Si,
S, P, Mn, Cr, Ni and Cu
CEN/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 shape
EN 10365, Hot rolled steel channels, I and H sections — Dimensions and masses
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 2566-1)
EN ISO 6892-1:2016, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1:2016)
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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 https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
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 to entry: Thermomechanical rolling 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.
3.2
fine grain steels
steels with fine grain structure with an equivalent index of ferritic grain size ≥ 6
Note 1 to entry: For the determination of grain sizes see EN ISO 643.
4 Classification and designation
4.1 Classification
4.1.1 Main quality classes
All steel grades specified in this document shall be classified as alloy special steels according to EN 10020
except grade S275 which is a non-alloy quality steel.
4.1.2 Grades and qualities
This document specifies five steel grades S275, S355, S420, S460 and S500. All steel grades may be supplied
in the following qualities as specified at the time of the order:
— with specified minimum values of impact energy at temperatures not lower than −20 °C, designated as
M;
— with specified minimum values of impact energy at temperatures not lower than −50 °C, designated as
ML.
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EN 10025-4:2019+A1:2022 (E)
4.2 Designation
4.2.1 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:
— number of this document (EN 10025-4);
— steel name or the steel number; the steel name consisting of:
— symbol S (for structural steel);
— indication of the minimum specified yield strength for thickness ≤ 16 mm expressed in MPa;
— delivery condition M;
— capital letter L for the quality with specified minimum values of impact energy at temperatures not
lower than −50 °C.
EXAMPLE Thermomechanical rolled structural steel (S) with a specified minimum yield strength at room
temperature of 355 MPa and with a specified minimum impact energy at −50 C:
EN 10025-4 - S355ML
Or
EN 10025-4 - 1.8834
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:
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).
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6.2 Deoxidation and grain structure
Steels of EN 10025-4 shall
— be fully killed;
— have a fine grain structure;
— contain 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 and their content (% mass)
shall be reported in the inspection document (see Table 1).
6.3 Delivery conditions
The products shall be supplied in the thermomechanical rolled condition as defined in Clause 3.
7 Requirements
7.1 General
The requirements in 7.2 and 7.3 apply for sampling, preparation of test pieces and testing specified in
Clauses 9 and 10.
7.2 Chemical composition
7.2.1 The chemical composition determined by heat analysis shall comply with the specified values of
Table 1.
For elements not defined in the table for the chemical composition for heat analysis, limit values of Table 1
of EN 10020:2000 shall apply as maximum values.
7.2.2 The limits applicable for the product analysis are given in Table 2. The product analysis shall be
carried out when specified at the time of the order.
See Option 2, Clause 13 (product analysis).
For elements not defined in tables for the chemical composition for product analysis, limit values of Table 1
of EN 10020:2000 shall apply as maximum values.
7.2.3 The maximum carbon equivalent values based on the heat analysis, given in Table 3 shall apply.
For determining the carbon equivalent value the following IIW (International Institute of Welding) formula
shall be used:
Cr++Mo V Ni+ Cu
Mn
CEV=C++ +
6 5 15
7.2.4 When products 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 3 shall be increased as follows:
— for Si ≤ 0,04 %, increase the value of the CEV by 0,02;
— for Si ≤ 0,25 %, increase the value of the CEV by 0,01.
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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 4 to 6.
Stress relieving at more than 580 °C or for over 1 h may lead to a deterioration of the mechanical properties
of the steel grades. If the purchaser intends to stress relief the products at higher temperatures or for
longer times than mentioned above, the minimum values of the mechanical properties after such
...
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