SIST EN 10025-2:2019

SLOVENSKI STANDARD
oSIST prEN 10025-2:2018
01-september-2018
9URþHYDOMDQLL]GHONLL]NRQVWUXNFLMVNLKMHNHOGHO7HKQLþQLGREDYQLSRJRML]D
QHOHJLUDQDNRQVWUXNFLMVNDMHNOD
Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-
alloy structural steels
Warmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für
unlegierte Baustähle
Produits laminés à chaud en aciers de construction - Partie 2 : Conditions techniques de
livraison pour les aciers de construction non alliés
Ta slovenski standard je istoveten z: prEN 10025-2
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.45 Nelegirana jekla Non-alloyed steels
77.140.50 3ORãþDWLMHNOHQLL]GHONLLQ Flat steel products and semi-
SROL]GHONL products
oSIST prEN 10025-2:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 10025-2:2018

---------------------- Page: 2 ----------------------
oSIST prEN 10025-2:2018


DRAFT
EUROPEAN STANDARD
prEN 10025-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2018
ICS 77.140.10; 77.140.45; 77.140.50 Will supersede 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 Baustähle
This draft European Standard is submitted to CEN members for second enquiry. It has been drawn up by the Technical
Committee ECISS/TC 103.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of 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 United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10025-2:2018 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
2.1 General standards . 6
2.2 Standards on dimensions and tolerances . 7
2.3 Standards on testing . 8
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 . 10
5.1 Mandatory information . 10
5.2 Options . 10
6 Manufacturing process . 10
6.1 Steel making process . 10
6.2 Deoxidation and grain structure . 10
6.3 Delivery conditions . 11
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 . 13
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 . 15
7.5.1 Strip . 15
7.5.2 Plates and wide flats . 15
7.5.3 Sections . 15
7.5.4 Bars and rods . 15
7.6 Internal soundness . 15
7.7 Dimensions, tolerances on dimensions and shape, mass . 15
8 Inspection . 16
8.1 General . 16
8.2 Type of inspection and 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 . 17
2

---------------------- Page: 4 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
9.1 Frequency of testing . 17
9.1.1 Chemical analysis . 17
9.1.2 Mechanical tests . 17
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. 18
9.3 Identification of samples and test pieces . 18
10 Test methods . 18
10.1 Chemical analysis . 18
10.2 Mechanical tests . 19
10.2.1 Tensile test . 19
10.2.2 Impact test . 19
10.3 Ultrasonic testing . 19
10.4 Retests . 19
11 Marking, labelling, packaging . 20
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
3

---------------------- Page: 5 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
European foreword
This document (prEN 10025-2:2018) has been prepared by Technical Committee ECISS/TC 103
“Structural steels other than reinforcement”, the secretariat of which is held by DIN.
This document is currently submitted to the second CEN Enquiry.
This document will supersede EN 10025-2:2004.
This European Standard consists of the following parts, under the general title Hot rolled products of
structural steels:
Part 1: General
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 10025-2:2018 to
EN 10025−6:2018, 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 has 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 reference must be 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 construction purposes this standard and part 1 must be 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;
g) key to Figure A.1 was updated;
4

---------------------- Page: 6 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
h) steel grade S450 was deleted and steel grades S460 and S500 were added;
i) Annex B was deleted;
j) references were updated and the document was editorially revised.
5

---------------------- Page: 7 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (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 permitted. Products delivered in +N condition can be hot
formed and/or normalized after delivery (see Clause 3).
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 order. The chemical composition
can also be agreed at the time of the order, however the values should be within the limits of Tables 1
and 2.
For certain grades and product forms suitability for particular applications may be 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.
2.1 General standards
EN 1011-2, Welding — Recommendations for welding of metallic materials — Part 2: Arc welding of
ferritic steels
EN 10020:2000, Definition and classification of grades of steel
EN 10021, General technical delivery conditions for steel products
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
EN 10027-2, Designation systems for steels — Part 2: Numerical system
EN 10079, Definition of steel products
EN 10163-1, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections
— Part 1: General requirements
6

---------------------- Page: 8 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
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
CEN/TR 10347, Guidance for forming of structural steels in processing
CR 10320, Optical emission analysis of low alloy steels (routine method) — Method for determination of C,
Si, S, P, Mn, Cr, Ni and Cu
FprEN ISO 9443:2018, Surface quality classes for hot-rolled bars and wire rod (ISO/FDIS 9443:2018)
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)
2.2 Standards on dimensions and tolerances
EN 10017, 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 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 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
7

---------------------- Page: 9 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
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 10279, Hot rolled steel channels — Tolerances on shape, dimensions and mass
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
2.3 Standards on testing
EN 10160, Ultrasonic testing of steel flat product of thickness equal 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 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 643, Steels — Micrographic determination of the apparent grain size (ISO 643)
EN ISO 6892-1:2016, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1:2016)
EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition (ISO 14284)
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 normalizing
Note 1 to entry: The abbreviated form of this delivery condition is +N.
Note 2 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.
8

---------------------- Page: 10 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
3.2
as-rolled
conventional hot rolling without any normalized rolling or thermomechanical rolling and/or heat
treatment like normalizing or quenching
Note 1 to entry: 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 to entry: The abbreviated form of this delivery condition is +M.
Note 2 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 3 to entry: In some publications the word TMCP (Thermomechanical Control Process) is also used.
3.4
normalizing
heat treatment consisting of austenitizing followed by air cooling
Note 1 to entry: The abbreviated form of this delivery condition is +N.
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 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 10025-2);
— steel name or the steel number; the steel name consisting of:
9

---------------------- Page: 11 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
— 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):
EN 10025-2 - S355J0C+N
or
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:
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 (details of manufacturing process).
6.2 Deoxidation and grain structure
The deoxidation methods are designated as follows:
10

---------------------- Page: 12 ----------------------
oSIST prEN 10025-2:2018
prEN 10025-2:2018 (E)
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.
The method of deoxidation shall be as given in Tables 1 and 2.
6.3 Delivery conditions
Unless otherwise agreed 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 (delivery condition +AR, +N or +M for long products and strip, +AR, +N for quarto
plates).
If an inspection document is required (see 8.2) 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 standard are not
depending on the delivery condition.
7 Requirements
7.1 General
The requirement
...

SLOVENSKI STANDARD
oSIST prEN 10025-2:2014
01-julij-2014
9URþHYDOMDQLL]GHONLL]NRQVWUXNFLMVNLKMHNHOGHO7HKQLþQLGREDYQLSRJRML]D
QHOHJLUDQDNRQVWUXNFLMVNDMHNOD
Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-
alloy structural steels
Warmgewalzte Erzeugnisse aus Baustählen - Teil 2: Technische Lieferbedingungen für
unlegierte Baustähle
Produits laminés à chaud en aciers de construction - Partie 2 : Conditions techniques de
livraison pour les aciers de construction non alliés
Ta slovenski standard je istoveten z: prEN 10025-2
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.45 Nelegirana jekla Non-alloyed steels
77.140.50 3ORãþDWLMHNOHQLL]GHONLLQ Flat steel products and semi-
SROL]GHONL products
oSIST prEN 10025-2:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 10025-2:2014

---------------------- Page: 2 ----------------------
oSIST prEN 10025-2:2014

EUROPEAN STANDARD
WHITE DRAFT
prEN 10025-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

May 2014
ICS 77.140.10; 77.140.45; 77.140.50 Will supersede 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 - Partie Warmgewalzte Erzeugnisse aus Baustählen - Teil 2:
2 : Conditions techniques de livraison pour les aciers de Technische Lieferbedingungen für unlegierte Baustähle
construction non alliés
This draft European Standard is submitted to ECISS/COCOR before submission to CEN members for formal vote. It has been drawn up by
the Technical Committee ECISS/TC 103.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10025-2:2014 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
2.1 General standards .4
2.2 Standards on dimensions and tolerances (see 7.7.1) .5
2.3 Standards on testing .6
3 Terms and definitions .6
4 Classification and designation .7
4.1 Classification .7
4.2 Designation .7
5 Information to be supplied by the purchaser .8
5.1 Mandatory information .8
5.2 Options .8
6 Manufacturing process .8
6.1 Steel making process .8
6.2 Deoxidation .8
6.3 Delivery conditions .9
7 Requirements .9
7.1 General .9
7.2 Chemical composition .9
7.3 Mechanical properties . 10
7.4 Technological properties . 11
7.5 Surface properties . 13
7.6 Internal soundness . 13
7.7 Dimensions, tolerances on dimensions and shape, mass . 13
8 Inspection . 14
8.1 General . 14
8.2 Type of inspection and inspection document . 14
8.3 Frequency of testing . 14
8.4 Tests to be carried out for specific inspection . 15
9 Preparation of samples and test pieces . 15
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
9.3 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 . 17
12 Complaints . 17
13 Options (see 5.2) . 17
Bibliography . 32

2

---------------------- Page: 4 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
Foreword
This document (prEN 10025-2:2014) has been prepared by Technical Committee ECISS/TC 103 “Structural
steels other than reinforcements”, the secretariat of which is held by DIN.
This document is currently submitted to the COCOR Vote.
This document will supersede EN 10025-2:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
The titles of the other Parts of this European Standard are:
Part 1: General;
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.

3

---------------------- Page: 5 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
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 1 to 5 (chemical composition) and
Tables 6 to 8 (mechanical properties) in the 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 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 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.
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. 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 order. The chemical composition can also be agreed at the
time of the order, however the values should be within the limits of Tables 1 and 2.
NOTE 2 For certain grades and product forms suitability for particular applications may be specified at the time of the
order (see 7.4.2, 7.4.3 and Table 9).
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 10020:2000, Definition and classification of grades of steel
EN 10021, General technical delivery conditions for steel products
prEN 10025-1:2014, Hot rolled products of structural steels - Part 1: General
EN 10027-1, Designation systems for steels - Part 1: Steel names
EN 10027-2, Designation systems for steels - Part 2: Numerical system
EN 10079:2007, Definition of steel products
EN 10163-1, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections –
Part 1: General requirements
4

---------------------- Page: 6 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
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
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 10221, Surface quality classes for hot-rolled round bars and rods - Technical delivery conditions
EN ISO 14713-2:2009, Guidelines and recommendations for the protection against corrosion of iron and steel
structures – Zinc coating – Part 2: Hot dip galvanizing (ISO 14713-2:2009)
CEN/TR 10347, Guidance for forming of structural steels in processing
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 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 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 - Dimensions and tolerances on shape and dimensions
EN 10061, Hot rolled hexagon steel bars - Dimensions and tolerances on shape and dimensions
EN 10067, Hot rolled bulb flats - Dimensions and tolerances on shape, dimensions and mass
EN 10279, Hot rolled steel channels - Tolerances on shape, dimensions and mass
5

---------------------- Page: 7 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
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 148-1, Metallic materials – Charpy pendulum impact test – Part 1: Test method (ISO 148-1:2009)
EN ISO 643, Steels – Micrographic determination of the apparent grain size (ISO 643:2003)
EN ISO 6892-1, Metallic materials – Tensile testing – Part 1: Method of test at room temperature (ISO 6892-
1:2009)
EN ISO 14284, Steel and iron – Sampling and preparation of samples for the determination of chemical
composition (ISO 14284:1996)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 10025-1:2014 and the following
apply.
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 normalizing
Note 1 to entry The abbreviated form of this delivery condition is +N
Note 2 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
conventional hot rolling without any normalized rolling or thermomechanical rolling and/or heat treatment like
normalizing or quenching
Note 1 to entry 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 to entry The abbreviated form of this delivery condition is +M.
Note 2 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 3 to entry In some publications the word TMCP (Thermomechanical Control Process) is also used.
6

---------------------- Page: 8 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
3.4
normalizing
heat treatment consisting of austenitizing followed by air cooling
Note 1 to entry The abbreviated form of this delivery condition is +N.
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.
They differ in their mechanical properties.
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 Designation
4.2.1 The designation shall be in accordance with prEN 10025-1.
4.2.2 The designation shall consist of:
− number of this document (prEN 10025-2);
− steel name or the steel number; the steel name consisting of:
 symbol S (for structural steel) or E (for engineering steel);
)
1
 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 number.

) 2
1
1 MPa = 1 N/mm .
7

---------------------- Page: 9 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
1)
EXAMPLE Structural steel (S) with a specified minimum yield strength at room temperature of 355 MPa , with a
minimum impact energy value of 27 J at 0 ºC (J0) and suitable for cold flanging (C), delivery condition +N:
Steel prEN 10025-2 - S355J0C+N
or
Steel prEN 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:
a) quantity to be delivered;
b) product form;
c) number of the relevant part of this document;
d) steel name or the steel number (see 4.2.2);
e) nominal dimensions and tolerances on dimensions and shape (see 7.7.1);
f) additional requirements of inspection and testing as specified in prEN 10025-2;
g) type of inspection document according to EN 10204 (see 8.2);
h) all required options (see 5.2);
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 g)).
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.
6.2 Deoxidation
6.2.1 The method of deoxidation shall be as given in Tables 1 and 2.
6.2.2 The deoxidation methods are designated as follows:
a) Optional - Method at the manufacturer's discretion;
8

---------------------- Page: 10 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
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
Unless otherwise agreed 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.
For long products and hot rolled strip, the delivery condition +AR, +N or +M can be ordered. For quarto plates,
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, +AR or +M the specific
symbol (+N, +AR 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 standard are not
depending on the delivery condition.
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 1 and 2.
For elements not defined in tables for the chemical composition for ladle analysis, limit values of Table 1 of
EN 10020:2000 shall apply as maximum values.
7.2.2 The upper limits applicable for the product analysis are given in Tables 3 and 4.
The product analysis shall be carried out when specified at the time of the order.
See option 2.
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 for the grades S235, S275, S355, S460 and S500 based on
the ladle analysis, given in Table 5 shall apply. For the carbon equivalent value formula see 4.4 of
prEN 10025-1:2014.
9

---------------------- Page: 11 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
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 5 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 5 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.
7.2.6 The chemical composition of steel grades for cold formability (see 7.4.2.2) shall be in conformance
with the corresponding grades in Tables 1 to 5.
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 6,
7 and 8.
NOTE 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 as defined in prEN 10025-2. For normalized and normalized rolled flat products the maximum stress relief
temperature should be 560 °C. 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 a treatment should be agreed at
the time of the order.
7.3.1.2 For flat and bar products ordered and supplied in the normalized or normalized rolled condition
(delivery condition +N) the mechanical properties shall comply with the relevant tables for mechanical
properties of prEN 10025-2 in the normalized or normalized rolled condition or after normalizing by heat
treatment after delivery or after hot forming if the provisions of CEN/TR 10347 are satisfied.
NOTE Products can be susceptible to a deterioration in mechanical strength if they are subjected to incorrect heat
treatment processes at higher temperature such as flame straightening, rerolling, etc. Products in the +N delivery condition
are less sensitive than other delivery conditions, but it is recommended that guidance is sought from the manufacturer if
any higher temperature processing is required.
7.3.1.3 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 prEN 10025-1:2014).
7.3.1.4 The mechanical properties of steel grades for cold formability (see 7.4.2.2) shall be in
conformance with the corresponding grades in Tables 6 to 8.
7.3.2 Impact properties
7.3.2.1 The verification of the impact energy value shall be carried out in accordance with prEN 10025-1.
The impact properties of products of certain qualities specified in prEN 10025-2 shall be verified by test at the
temperature given in Table 8 unless otherwise agreed at the time of the order.
See option 3.
10

---------------------- Page: 12 ----------------------
oSIST prEN 10025-2:2014
prEN 10025-2:2014 (E)
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 aluminium is used as the grain refining element, the grain size requirement shall be deemed to be
fulfilled if on ladle analysis the aluminium content is not less than 0,020 % total aluminium or alternatively,
0,015 % acid soluble aluminium. In this case verification of the grain size is not required, but the aluminium
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 flat and long products shall comply with one of requirements specified in 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 as 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 the welded joint.
7.4.1.2 This document gives no information concerning the weldability of the steel
...