FprEN 10209
(Main)Cold rolled low carbon steel flat products for vitreous enamelling - Technical delivery conditions
Cold rolled low carbon steel flat products for vitreous enamelling - Technical delivery conditions
This document applies to cold rolled non-coated low carbon steel flat products in rolled widths equal to or over 600 mm and in thicknesses equal to or less than 3 mm, delivered in sheet, wide strip, slit wide strip or cut lengths obtained from slit wide strip or sheet.
It does not apply to cold rolled narrow strip (rolling width < 600 mm) or to cold rolled flat products for which there is a specific standard, in particular the following:
- cold-rolled low carbon steel flat products for cold forming (EN 10130);
- cold-rolled non-oriented electrical steel sheet and strip delivered in fully processed state (EN 10106);
- cold rolled electrical non-alloy and alloy steel sheet and strip delivered in the semi-processed state (EN 10341);
- cold reduced blackplate (EN 10205);
- steel sheet and strip for welded gas cylinders (EN 10120);
- cold-rolled uncoated non-alloy mild steel narrow strip for cold forming (EN 10139);
- cold-rolled structural steels for general purposes;
- cold-rolled flat products made of high yield strength for cold forming (EN 10268).
Kaltgewalzte Flacherzeugnisse aus weichen Stählen zum Emaillieren - Technische Lieferbedingungen
Dieses Dokument gilt für kaltgewalzte Flacherzeugnisse ohne Überzug in Breiten von 600 mm oder größer und Dicken von 3 mm und geringer aus weichen Stählen zum Kaltumformen, die zum Emaillieren geeignet sind und als Blech, Breitband, längsgeteiltes Breitband oder aus längsgeteiltem Breitband oder Blech hergestellten Stäbe geliefert werden.
Sie gilt nicht für kaltreduziertes Schmalband (Walzbreite < 600 mm), ferner nicht für kaltgewalzte Flacherzeugnisse, für die es eine gesonderte Norm gibt, insbesondere die folgenden:
- kaltgewalzte Flacherzeugnisse aus weichen Stählen zum Kaltumformen (EN 10130);
- kaltgewalztes nichtkornorientiertes Elektroblech und -band im schlussgeglühten Zustand (EN 10106);
- kaltgewalztes Elektroblech und -band aus unlegierten und legierten Stählen im nicht schlussgeglühten Zustand (EN 10341);
- kaltgewalztes Feinstblech (EN 10205);
- Stahlblech und -band für geschweißte Gasflaschen (EN 10120);
- Kaltband ohne Überzug aus weichen unlegierten Stählen für Kaltumformung (EN 10139);
- kaltgewalzte Baustähle für allgemeine Anwendung;
- kaltgewalzte Flacherzeugnisse aus Stahl mit hoher Streckgrenze zum Kaltumformen (EN 10268).
Produits plats laminés à froid, en acier doux pour émaillage par vitrification - Conditions techniques de livraison
Le présent document s'applique aux produits plats laminés à froid, non revêtus, de largeur supérieure ou égale à 600 mm, d’épaisseur inférieur ou égale à 3 mm, en acier doux, pour l’emboutissage ou pliage à froid et destinés à un émaillage par vitrification, livrés en tôles, larges bandes, larges bandes refendues, barres obtenues à partir de larges bandes refendues ou de tôles.
Il ne s'applique pas aux feuillards (largeur de laminage < 600 mm) laminés à froid ni aux produits plats laminés à froid pour lesquels il existe une norme spécifique, en particulier pour les produits suivants :
- produits plats laminés à froid en acier doux pour formage à froid (EN 10130) ;
- tôles magnétiques en acier à grains non orientées laminées à froid et livrées à l’état fini (EN 10106) ;
- bandes et tôles magnétiques laminées à froid en aciers non-allié et en acier allié livrées à l'état semi-fini (EN 10341) ;
- fer noir laminé à froid (EN 10205) ;
- tôles et bandes pour bouteilles à gaz soudées en acier (EN 10120) ;
- feuillards non revêtus relaminés à froid en aciers doux non alliés, pour formage à froid (EN 10139) ;
- aciers de construction d’usage général laminés à froid ;
- produits plats laminés à froid à haute limite d’élasticité pour formage à froid (EN 10268).
Hladno valjani ploščati izdelki iz maloogljičnih jekel za emajliranje - Tehnični dobavni pogoji
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 10209:2022
01-september-2022
Hladno valjani ploščati izdelki iz maloogljičnih jekel za emajliranje - Tehnični
dobavni pogoji
Cold rolled low carbon steel flat products for vitreous enamelling - Technical delivery
conditionsKaltgewalzte Flacherzeugnisse aus weichen Stählen zum Emaillieren - Technische
Lieferbedingungen
Produits plats laminés à froid, en acier doux pour émaillage par vitrification - Conditions
techniques de livraisonTa slovenski standard je istoveten z: prEN 10209
ICS:
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
oSIST prEN 10209:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 10209:2022
DRAFT
EUROPEAN STANDARD
prEN 10209
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2022
ICS 77.140.50 Will supersede EN 10209:2013
English Version
Cold rolled low carbon steel flat products for vitreous
enamelling - Technical delivery conditions
Produits plats laminés à froid, en acier doux pour Kaltgewalzte Flacherzeugnisse aus weichen Stählen
émaillage par vitrification - Conditions techniques de zum Emaillieren - Technische Lieferbedingungen
livraisonThis draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 9.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, 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.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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10209:2022 E
worldwide for CEN national Members.---------------------- Page: 3 ----------------------
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Contents Page
European foreword ............................................................................................................................................ 4
1 Scope .......................................................................................................................................................... 5
2 Normative references .......................................................................................................................... 5
3 Terms and definitions ......................................................................................................................... 6
4 Designation ............................................................................................................................................. 6
5 Requirements ......................................................................................................................................... 6
5.1 Steelmaking and manufacturing processes ................................................................................ 6
5.2 Method of deoxidation ........................................................................................................................ 6
5.3 Chemical composition ......................................................................................................................... 6
5.4 Suitability for vitreous enamelling ................................................................................................. 7
5.5 Delivery condition ................................................................................................................................ 7
5.6 Choice of properties ............................................................................................................................. 7
5.7 Mechanical properties ........................................................................................................................ 8
5.8 Surface characteristics ........................................................................................................................ 8
5.9 Stretcher strain marks ........................................................................................................................ 8
5.10 Weldability .............................................................................................................................................. 9
5.11 Tolerances on dimensions and shape ........................................................................................... 9
6 Tests ........................................................................................................................................................... 9
6.1 General...................................................................................................................................................... 9
6.2 Inspection units ..................................................................................................................................... 9
6.3 Number of tests ...................................................................................................................................... 9
6.4 Sampling ................................................................................................................................................... 9
6.5 Test methods .......................................................................................................................................... 9
6.6 Retests ..................................................................................................................................................... 10
6.7 Inspection documents ....................................................................................................................... 10
7 Identification ........................................................................................................................................ 10
8 Packaging ............................................................................................................................................... 10
9 Disputes .................................................................................................................................................. 10
10 Information to be supplied by the purchaser at the time of ordering ............................. 10
Annex A (informative) Methods for determining the resistance to fish scaling of a steel sheet
for enamelling ...................................................................................................................................... 14
A.1 Hydrogen permeation test ............................................................................................................... 14
A.2 Fish scaling test using special enamel ......................................................................................... 17
Annex B (normative) Method for determining mass loss (iron loss) due to pickling for steel
grades for direct enamelling in accordance with 5.4.2 ......................................................... 18
B.1 Principle ................................................................................................................................................. 18
B.2 Apparatus .............................................................................................................................................. 18
B.3 Sampling ................................................................................................................................................. 18
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B.4 Preparation ........................................................................................................................................... 19
B.5 Weighing ................................................................................................................................................ 19
B.6 Cleaning .................................................................................................................................................. 19
B.7 Checks on degreasing quality ......................................................................................................... 19
B.8 Pickling ................................................................................................................................................... 19
B.9 Drying ..................................................................................................................................................... 20
B.10 Weighing after cooling ...................................................................................................................... 20
B.11 Evaluation.............................................................................................................................................. 20
Annex C (normative) Method for determining the adherence level of enamel applied to a
steel sheet .............................................................................................................................................. 21
C.1 Field of application ............................................................................................................................ 21
C.2 Principle ................................................................................................................................................. 21
C.3 Apparatus .............................................................................................................................................. 21
C.4 Description of the apparatus .......................................................................................................... 21
C.5 Procedure .............................................................................................................................................. 21
C.6 Adherence level evaluation ............................................................................................................ 22
Annex D (informative) Characteristics for the selection of enamelling steel grades ............. 26
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European foreword
This document (prEN 10209:2022) has been prepared by Technical Committee CEN/TC 459 “ECISS -
European Committee for Iron and Steel Standardization” , the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.This document will supersede EN 10209:2013.
In comparison with the previous edition, the following technical modifications have been made:
— DC07EK steel grade added;— r value in Mechanical Properties (Table 2) changed;
— Table 2: definition of Tensile test direction more precise;
— Annex A: conditions of the fish scaling test, devices to be used (removal of Strohlein apparatus)
redefined.Through its sub-committee SC 9 “Coated and uncoated flat products to be used for cold forming” (secretariat:
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1 Scope
This document applies to cold rolled non-coated low carbon steel flat products in rolled widths equal to
or over 600 mm and in thicknesses equal to or less than 3 mm, delivered in sheet, wide strip, slit wide
strip or cut lengths obtained from slit wide strip or sheet.It does not apply to cold rolled narrow strip (rolling width < 600 mm) or to cold rolled flat products for
which there is a specific standard, in particular the following:— cold-rolled low carbon steel flat products for cold forming (EN 10130);
— cold-rolled non-oriented electrical steel sheet and strip delivered in fully processed state (EN 10106);
— cold rolled electrical non-alloy and alloy steel sheet and strip delivered in the semi-processed state
(EN 10341);— cold reduced blackplate (EN 10205);
— steel sheet and strip for welded gas cylinders (EN 10120);
— cold-rolled uncoated non-alloy mild steel narrow strip for cold forming (EN 10139);
— cold-rolled structural steels for general purposes;— cold-rolled flat products made of high yield strength for cold forming (EN 10268).
2 Normative referencesThe 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 10021, General technical delivery conditions for steel productsEN 10027-1, Designation systems for steels — Part 1: Steel names
EN 10027-2, Designation systems for steels — Part 2: Numerical system
EN 10049, Measurement of roughness average Ra and peak count RPc on metallic flat products
EN 10079:2007, Definition of steel productsEN 10131, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield
strength steel flat products for cold forming — Tolerances on dimensions and shape
EN 10204, Metallic products — Types of inspection documentsEN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical
testing (ISO 377)EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1)ISO 10113, Metallic materials — Sheet and strip — Determination of plastic strain ratio
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10079:2007 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp— IEC Electropedia: available at https://www.electropedia.org/
4 Designation
4.1 Steel names shall be attributed in accordance with EN 10027-1; numerical designations are
attributed in accordance with EN 10027-2.All steels reported in Table 2 are non-alloy and alloy quality steels.
4.2 Products conforming to this document shall be designated, in order, in the following way:
a) product designation (e.g. strip, sheet or “slit strip cut longitudinally”);b) number of this document (EN 10209);
c) name or numerical designation of the steel, shown in Table 2;
d) where appropriate, the symbol relating to surface finish (see Table 1).
Examples of conventional designations:
Designation of a steel sheet with the symbolic designation DC01EK and the numerical designation 1.0390 with
rough surface finish (r):Sheet EN 10209 DC01EK r or
Sheet EN 10209 — 1.0390 r
Designation of a wide strip of steel with the symbolic designation DC06ED and the numerical designation 1.0872
with normal surface finish (m):Wide strip EN 10209 — DC06ED m or
Wide strip EN 10209 — 1.0872 m.
5 Requirements
5.1 Steelmaking and manufacturing processes
Unless otherwise agreed at the time of ordering, the production methods shall be left to the discretion of
the manufacturer.The purchaser shall be informed of these processes if specified in the purchase order.
5.2 Method of deoxidationSee Table 2.
5.3 Chemical composition
The maximum values for the chemical compositions based on ladle analysis shall be as given in Table 2.
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5.4 Suitability for vitreous enamelling
5.4.1 Qualities DC01EK, DC04EK, DC05EK, DC06EK and DC07EK are suitable for one or two coats of
conventional enamelling.5.4.2 Qualities DC03ED, DC04ED and DC06ED are suitable for direct enamelling, as well as for the two
coats – one fire process and for the special applications of two coat enamelling for sag resistance.
5.4.3 The following methods of test are defined in order to determine the suitability of the steel for
enamelling:— hydrogen permeation test (see Annex A) (alternatively, if agreed at the time of ordering, an
enamelling test as described in A.2 may be specified).NOTE These two tests enable the risk of fish scaling following enamelling to be assessed.
— iron loss test for qualities of steel for direct enamelling as described in 5.4.2 (see Annex B).
5.4.4 An enamel adherence test (see Annex C) is also defined (pretreatment and enamelling conditions
shall be agreed at the time of ordering).5.4.5 The application of the methods of test described in Annex A, Annex B and Annex C may be the
subject of an agreement at the time of ordering.5.5 Delivery condition
5.5.1 Products specified in this document should be supplied in the skin-passed condition. If agreed at
the time of ordering non-skin-passed products may be supplied.5.5.2 The products are normally delivered oiled. In this case, both the surfaces are preserved by a layer
of neutral non-drying oil, free of foreign bodies and uniformly spread in such a way that under normal
conditions of packaging, transportation, handling and storage the products will show no corrosion for up
to three months.If the conditions of transportation or storage are such that special protection against corrosion is
required, the purchaser shall inform the manufacturer at the time of the ordering.
The layer of oils shall be capable of being removed by alkaline solutions or normal solvents.
The choice of protective oils may be the subject of special agreement.The product can be supplied protected by specific coatings that are compatible with enamelling process
without degreasing upon agreement between supplier and purchaser.If the purchaser does not require the surfaces to be oiled, this shall be clearly indicated at the time of the
ordering.NOTE If the order is for unoiled products, the manufacturer is not responsible for the risk of rust. The
purchaser is also advised that there is a greater risk of the appearance of light scratches during handling,
transportation, and application.5.6 Choice of properties
The products covered by this document shall correspond to the requirements of Table 1 and Table 2.
Subject to agreement between the supplier and the purchaser, they may be supplied with particular
suitability for the production of a specific part; in this case a maximum rejection percentage may be set
by mutual agreement and acceptance on the basis of mechanical properties would not apply.
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5.7 Mechanical properties
The mechanical properties given in Table 2 only apply to skin-passed products. These mechanical
properties are valid for the period specified in Table 2 from the date on which the products are made
available.The date of availability shall be notified to the purchaser with reasonable prior notice compatible with
the validity of the mechanical properties.5.8 Surface characteristics
5.8.1 General
The surface characteristics consist of the surface appearance and surface finish.
5.8.2 Surface appearanceThe products are supplied with a surface appearance which does not adversely affect suitability for
forming, the application of an enamel coating and the uniform appearance of the enamelled surface on
the exposed surface.When supplied as wide strip and slit strip, the percentage of surface defects may be higher than when
supplied as sheet and cut lengths. This shall be taken into account by the purchaser and the permissible
percentage of surface defects shall be set by special agreement at the time of ordering.
Unless otherwise agreed, a single surface of the product shall comply with the specified requirements.
The other surface shall be such that during subsequent treatment it does not have a deleterious effect on
the better surface.5.8.3 Surface finish
The surface finish may be normal or rough.
In the absence of a requirement in the order, products shall be supplied with the normal surface finish.
The limiting figures for average surface roughness for the two types of finish are given in Table 1.
The measurements shall be made in accordance with EN 10049.If specially agreed at the time of ordering, other ranges for surfaces are specified for specific end uses.
Table 1 — Surface finishes and standard roughnessSurface finish Symbol Roughness
0,6 µm < R ≤ 1,9 µm
Normal m
Rough r R > 1,6 µm
5.9 Stretcher strain marks
All the products are generally subjected to a light skin-pass after annealing at the manufacturer's works
to avoid the formation of stretcher strain marks during subsequent forming. The tendency to form such
marks may reappear a certain time after the skin-pass. It is therefore in the purchaser's interest to form
the products as soon as possible.Quality DC06EK, DC06ED and DC07EK products do not exhibit stretcher strain marks after deformation.
For the other qualities the absence of stretcher strain marks may be guaranteed for six months after the
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5.10 Weldability
The material is specified as suitable for normal welding procedures as long as the products are degreased
beforehand. The welding procedure shall be specified at the time of ordering (see 10 h).
5.11 Tolerances on dimensions and shapeTolerances on dimensions and shape shall be as given in EN 10131.
6 Tests
6.1 General
6.1.1 The purchaser shall specify at the time of ordering his requirements for:
— type of inspection and testing: specific or non-specific, see EN 10021;
— type of inspection document, see EN 10204.
6.1.2 Specific inspection and testing shall be carried out in accordance with 6.2, 6.3, 6.4, 6.5 and 6.6.
6.1.3 Specific inspection and testing may not be specified either for the product analysis or the surface
finish.6.2 Inspection units
The inspection unit is 30 t or a fraction of 30 t products of the same grade and nominal thickness.
When a wide coil exceeds 30 t, it constitutes a single inspection unit, as do its products.
6.3 Number of testsFor each inspection unit a tensile test shall be carried out, and if required, a determination of r and of the
suitability for enamelling shall be performed (see Table 2 and Annex A, Annex B and Annex C).
6.4 SamplingThe requirements of EN ISO 377 and EN 10021 shall apply and shall be supplemented by the following
specific requirements.For sheet and cut lengths the selection of products to be tested and the position of the samples in the
products is left to the discretion of the inspection representative.In the case of wide strip and slit wide strip, the sample should preferably be taken from the outer end.
If the width of the product permits, the test pieces for the tensile test shall be taken perpendicular to the
direction of rolling at a distance of at least 50 mm from the edge of the product.
6.5 Test methods6.5.1 The products shall be tested in the as-delivered condition. The tests shall be carried out at
ambient temperature.6.5.2 The tensile test shall be carried out as specified in EN ISO 6892-1 using type 2 test pieces (initial
gauge length Lo = 80 mm, width b = 20 mm).6.5.3 Surface roughness shall be measured in accordance with EN 10049.
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6.5.4 The determination of the plastic strain ratio r shall be carried out in accordance with ISO 10113.
6.5.5 The tests for suitability for enamelling (see 5.4.3) shall be carried out in accordance with:
— Annex A for the fish scaling resistance test;— Annex B for the mass loss due to pickling test;
— Annex C for the adherence test.
6.5.6 For the determination of the chemical composition the corresponding European Standards shall
apply in cases of dispute.6.6 Retests
The requirements of EN 10021 shall apply. For coils, in the event of the test results giving rise to dispute,
the samples for retests shall be taken at intervals of at least one lap but also at a maximum distance of
20 m from the appropriate end.6.7 Inspection documents
If agreed at the time of ordering, an inspection document chosen from those given in EN 10204 shall be
supplied (see also 6.1.1).7 Identification
All materials shall be identified with at least the following information:
— the conventional designation as described in Clause 4;
— the coil or bundle number;
— the supplier's mark.
Typically, the identification is applied by either a label or using an easily removable non-corrosive ink on
the inspected surface. Other identification requirements shall be agreed at the time of ordering.
8 PackagingThe packaging requirements shall be agreed at the time of ordering.
9 Disputes
With regard to any claims and actions, EN 10021 shall apply.
10 Information to be supplied by the purchaser at the time of ordering
To permit the manufacturer to supply products conforming to this document, the following information
should be given in the order:a) the full designation as given in Clause 4;
b) nominal dimensions and quantities;
c) if the products are to be supplied non-skin-passed;
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d) if the products are to be delivered with mill edges or sheared edges;
e) limits on mass and sizes of coils and individual bundles;
f) intended application for the products;
g) enamelling process used (see Annex D);
h) if the products are to be welded, indication of the method to be used;
i) if the products are to be supplied as suitable for making a specific part;
j) if inspection documents are requested and type;
k) if an external inspection is to be carried out at the manufacturer's works;
l) if oiling is not required;
m) detailed description of all other special requirements;
n) any special requirements for packaging and marking;
o) the position of the surface of better surface finish quality.
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a i
Table 2 — Characteristics
Designation R A % r Chemical composition (ladle analysis) C content
Designation Method of Validity of R
e m 80 90
in accordance in deoxidation mechanical % max
MPa MPa min (product
min
with accordance properties
max
analysis)
C Ti Mn P S
EN 10027-1 with and absence b c d
e
% max
EN 10027-2 of stretcher
strain marks
f f
DC01EK 1.0390 270 270/390 30 0,07 0,60 0,045 0,050
Fully killed 6 months
DC04EK 1.0392 Fully killed 6 months 270/350 36 0,06 0,50 0,030 0,050
220
DC05EK 1.0386 Fully killed 6 months 270/350 36 1,7 0,06 0,50 0,025 0,050
220
DC06EK 1.0869 Fully killed 6 months 190 270/350 38 1,8 0,02 0,50 0,020 0,050
0,15
DC07EK Fully killed 6 months 170 270/350 40 2 0,02 0,50 0,020 0,050
0,15
f f j
DC03ED 1.0399 240 270/370 34 0,40 0,035 0,050 0,004
Fully killed 6 months
g j
DC04ED 1.0394 Fully killed 6 months 270/350 38 0,40 0,030 0,050 0,004
210
DC06ED 1.0872 Fully killed 6 months 190 270/350 38 1,8 0,02 0,35 0,020 0,050
0,15
The mechanical properties apply only to skin-passed product. The mechanical property values refer to the perpendicular testing direction
The value for yield stress is the R 0,2 % for products which do not present a definite yield point and the lower yield stress (R ,) for the others. When the thickness is less than or equal to
p el0,7 mm and greater than 0,5 mm, the value for yield stress is increased by 20 MPa. For thicknesses less than or equal to 0,5 mm, the value is increased by 40 MPa.
For forming purposes, the lower limit of R for qualities DC01EK, DC04EK, DC05EK, DC03ED, and DC04ED may be assumed to be 140 MPa, for qualities DC06EK and DC06ED, 120 MPa and
for quality DC07EK, 90 MPaWhen the thickness is less than or equal to 0,7 mm, and greater than 0,5 mm, the minimum elongation value after fracture is reduced by 2 units. For thicknesses equal to or less than 0,5 mm,
the minimum value is reduced by 4 units.The minimum value of r only applies to products of thicknesses equal to or greater than 0,5 mm. When the thickness is over 2,0 mm, the minimum value of r is reduced by 0,2 units.
Subject to agreeme...
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