EN 10025-2:2019

SLOVENSKI STANDARD
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 jekla
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: 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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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 Baustähle
This 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.

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
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

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 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, 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;
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.
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 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
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)
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
+N
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: 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 quenching
3.3
thermomechanical rolling
+M
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 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.
3.4
Normalizing
+N
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 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:
— 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
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, 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). 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.
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 document are not
depending on the delivery condition.
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
Tables 1 and 2.
For elements not defined in tables 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 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, 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 for the grades S235, S275, S355, S460 and S500 based
on the heat analysis, given in Table 5 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 For all S235, S275 and S355 qualities, a copper-content between 0,25 % and 0,40 % on heat
analysis and between 0,20 % and 0,45 % on product analysis can be agreed upon at the time of enquiry
and order. In this case, the maximum carbon equivalent value of Table 5 shall be increased by 0,02.
See Option 20, Clause 13, (Cu alloyed).
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 7.4.2.3) 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.
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. 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 upon 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 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.
Products can be susceptible to a deterioration in mechanical strength if they are subjected to incorrect
heat treatment processes at higher temperatures 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 (Annex A).
7.3.1.4 The mechanical properties of steel grades for cold formability (7.4.2.3) shall be in
conformance with the corresponding grades in Tables 6 to 8.
7.3.2 Impact properties
7.3.2.1 The impact properties, except for qualities JR, shall be verified by test at the temperature
given in Table 8, unless otherwise agreed upon at the time of the order.
The impact properties of quality JR products are verified only when specified at the time of the order.
See Option 3, Clause 13, (Verification of impact properties for quality JR).
7.3.2.2 If specified at the time of the order for flat products of quality J2 and K2 out of each parent
plate or coil the impact properties only or the impact properties and the tensile properties shall be
verified.
See Option 13, Clause 13, (For flat products on each parent plate or coil impact properties only to be
verified).
See Option 14, Clause 13, (For flat products on each parent plate or coil impact and tensile properties
to be verified).
7.3.3 Improved deformation properties perpendicular to the surface
If agreed upon at the time of the order flat and long products shall comply with one of requirements
specified in EN 10164.
See Option 4, Clause 13, (Deformation properties perpendicular to the surface).
7.4 Technological properties
7.4.1 Weldability
7.4.1.1 General requirements for arc 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 grades S185,
E295, E335 and E360 because the chemical composition is not specified.
7.4.2 Formability and flame straightening
7.4.2.1 General
Recommendations regarding hot forming, cold forming and flame straightening are laid down in
CEN/TR 10347.
7.4.2.2 Hot forming
Only products ordered and supplied in the normalized or normalized rolled condition shall comply with
the requirements of Tables 6, 7 and 8 if hot forming is carried out after delivery (see 7.3.1.2).
NOTE The products ordered and supplied in the thermomechanical rolled and as-rolled condition are not
suitable for hot forming.
7.4.2.3 Cold formability
7.4.2.3.1 General
Grades and qualities suitable for cold forming and engineering steels suitable for cold drawing shall be
designated by the appropriate steel name (including symbol C or GC) or the appropriate steel number
as indicated in Tables 9 to 12 (see 4.2.2).
NOTE Cold forming leads to reduction in the ductility. The recommendation given in Tables 11 and 12 are
important to reduce risk of brittle fracture especially in connection with hot-dip zinc-coating.
7.4.2.3.2 Flangeability
If specified at the time of the order plate, sheet, strip, wide flats and flats (width < 150 mm) with a
nominal thickness ≤ 30 mm shall be suitable for flanging without cracking with the minimum
recommended bend radii given in Table 11. The grades and qualities to which this applies are given in
Table 9.
See Option 11, Clause 13, (Flangeability without cracking).
7.4.2.3.3 Roll forming
If specified at the time of the order plate, sheet and strip with a nominal thickness ≤ 8 mm shall be
suitable for the production of sections by cold rolling (for example according to EN 10162). The
suitability is applicable for bend radii given in Table 12. The grades and qualities to which this applies
are given in Table 9.
See Option 12, Clause 13, (Roll forming for flat products).
7.4.2.3.4 Drawing of bars
If specified at the time of the order, bars shall be suitable for cold drawing. The grades and qualities to
which this applies are given in Tables 9 and 10.
See Option 22, Clause 13, (Drawing of bars).
7.4.3 Hot-dip zinc-coating
EN ISO 1461 should be used to specify coating requirements. EN ISO 14713-2 provides further
guidance, including information on the influence of various factors, including steel chemical
composition, on the coating formation.
Option 5, Clause 13, can be used to order steels with a chemical composition required for hot-dip zinc
coating. When option 5 is implemented, the purchaser and manufacturer shall agree to a steel
composition (heat analysis) of silicon and phosphorous according to either Category A (or steels
satisfying the formula Si ≤ 0,03 % and Si+2,5P ≤ 0,09 %) or Category B (limited to 0,14 % ≤ Si ≤ 0,25 %)
or Category D (limited to 0,25 % < Si ≤ 0,35 %) with required values as cited by the ranges given in
EN ISO 14713-2:2009, Table 1, column 2.
NOTE EN ISO 14713-2:2009, Table 1, gives guidance on typical coating characteristics associated with
certain steel compositions on the basis of the surface composition of silicon and phosphorous.
The maximum carbon equivalent shall be increased by 0,02 or by 0,01 (see 7.2.5).
In some cases steels above S460 may be sensitive to cracking during galvanizing and therefore special
care should be taken.
See Option 5, Clause 13, (Chemical composition for hot dip zinc coating).
7.4.4 Machinability
All steel grades and qualities are machinable with common operations.
NOTE Due to the good ductility of qualities JR, J0, J2 and K2 problems can occur in the chip formation and in
surface finish quality. Generally a higher S content improves machinability. A proper Ca treatment applicable for
long products gives better machining properties (see footnote e of Table 1 and footnote c of Table 2).
See Option 27, Clause 13, (higher S-content for better machinability).
7.5 Surface properties
7.5.1 Strip
The surface condition should not impair an application appropriate to the steel grade if adequate
processing of the strip is applied.
7.5.2 Plates and wide flats
EN 10163-1 and EN 10163-2 shall apply for the permissible surface discontinuities and for the repair of
surface defects by grinding and/or welding. Class A, subclass 1 of EN 10163-2 shall apply, unless
otherwise agreed upon at the time of the order.
See Option 15, Clause 13, (Other surface class for plates and wide flats).
7.5.3 Sections
EN 10163-1 and EN 10163-3 shall apply for the permissible surface discontinuities and for the repair of
surface defects by grinding and/or welding. Class C, subclass 1 of EN 10163-3 shall apply, unless
otherwise agreed upon at the time of the order.
See Option 16, Clause 13, (Other surface class for sections).
7.5.4 Bars and rods
EN ISO 9443 applies for the permissible surface discontinuities and for the repair of surface defects by
grinding and/or welding. Class A of EN ISO 9443 shall apply, unless otherwise agreed upon at the time
of the order.
See Option 17, Clause 13, (Other surface class for bars and rods).
7.6 Internal soundness
Ultrasonic testing may be agreed upon at the time of the order and shall comply with 10.3.
See Option 6, Clause 13, (Ultrasonic testing for flat products).
See Option 7, Clause 13, (Ultrasonic testing for H beams with parallel flanges and IPE beams).
See Option 8, Clause 13, (Ultrasonic testing for bars).
7.7 Dimensions, tolerances on dimensions and shape, mass
7.7.1 Dimensions, tolerances on dimensions and shape shall be in accordance with the requirements
given in the order by reference to the following standards: EN 10017, EN 10024, EN 10029, EN 10034,
EN 10048, EN 10051, EN 10055, EN 10056-1, EN 10056-2, EN 10058, EN 10059, EN 10060, EN 10061,
EN 10067, EN 10279, EN 10363 and EN 10365.
For hot rolled plate tolerances, the basic requirements shall be in accordance with EN 10029, including
thickness tolerances to class A, unless otherwise agreed upon at the time of the order.
See Option 18, Clause 13, (For plates other thickness tolerance than class A).
For plates cut from continuously hot rolled strip, the thickness tolerances shall be in accordance with
EN 10051, unless otherwise agreed upon at the time of the order.
See Option 34, Clause 13, (For plates cut from strip thickness tolerances according to EN 10029).
7.7.2 The nominal mass shall be determined from the nominal dimensions using a volumetric mass of
7 850 kg/m .
8 Inspection
8.1 Type of inspection and inspection document
The products shall be delivered either with specific or non-specific inspection and testing to indicate
compliance with the order and this document. The manufacturer shall obtain from the purchaser the
required inspection documents specified in EN 10204.
NOTE Some application standards, e.g. EN 1090-2, require particular inspection documents according to
EN 10204.
Unless otherwise agreed upon, steel grades of this document (except steels S185, E295, E335 and E360
and semi-finished products) are delivered with CE marking, and they shallt not only fulfil these
technical delivery conditions but also the requirements of EN 10025-1.
It can be agreed upon at the time of enquiry and order to abstain from CE-marking, see Option 33,
Clause 13, in this case, EN 10025-1 does not apply.
See Option 33, Clause 13, (no application of CE-marking).
In the case of specific inspection, testing shall be carried out according to the requirements of 8.3,
Clauses 9 and 10.
In addition products of steel S185 shall only be submitted to non-specific inspection and testing and
only declarations/statements of compliance with the order shall be supplied when specified at the time
of the order.
See Option 23, Clause 13, (Certificate of compliance for S185).
8.2 Content of inspection document
The inspection document shall include, in accordance with EN 10168, the following codes and/or
information, where applicable:
A commercial transactions and parties involved;
B description of products to which the inspection document applies;
C00-C03 identification of the sample, location of the sample, direction of the test pieces, test
temperature;
C10-C13
shape of the test piece, yield or proof strength, tensile strength, elongation after
fracture;
C40-C43 type of test piece, width of test piece, individual values, mean value;
C70-C92 steelmaking process, chemical composition;
D other tests;
Z validation.
8.3 Tests to be carried out for specific inspection
8.3.1 The following tests shall be carried out:
— the heat analysis;
— the tensile test;
— for products
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