oSIST prEN 10348:2006

SLOVENSKI STANDARD
01-junij-2006
Jekla za armiranje betona - Pocinkana jekla za armiranje
Steel for the reinforcement of concrete - Galvanized reinforcing steel
Stahl für die Bewehrung von Beton - Verzinkter Betonstahl
Acier pour l'armature du béton - Aciers pour béton armé galvanisés
Ta slovenski standard je istoveten z: prEN 10348
ICS:
77.140.15 Jekla za armiranje betona Steels for reinforcement of
concrete
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
prEN 10348
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2006
ICS
English Version
Steel for the reinforcement of concrete - Galvanized reinforcing
steel
Acier pour l'armature du béton - Aciers pour béton armé Stahl für die Bewehrung von Beton - Verzinkter Betonstahl
galvanisés
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ECISS/TC 19.
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 Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland 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
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10348:2006: E
worldwide for CEN national Members.

prEN 10348:2006 (E)
Contents page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Symbols .5
5 Materials .6
5.1 Hot dip galvanizing bath .6
5.2 Repair material.6
6 Designation .6
7 Information to be supplied at the time of enquiry and order .6
8 Manufacture (galvanizing) .7
9 Performance characteristics .7
9.1 Chemical composition .7
9.2 Mechanical properties.7
9.3 Dimensions, mass per metre and tolerances .7
9.4 Bond strength and surface geometry.7
9.5 Coating characteristics .8
10 Evaluation of conformity.9
10.1 General.9
10.2 Factory production control.10
10.3 Initial type testing and continuous surveillance .11
10.4 Continuous surveillance of factory production control and audit testing .12
11 Test methods.12
11.1 Chemical composition .12
11.2 Mechanical properties.12
11.3 Dimensions, mass per metre and tolerances .12
11.4 Bond strength and surface geometry.12
11.5 Coating characteristics .12
12 Packing, handling, storage, transport .12
13 Product identification.13
Annex A (normative) Test methods for checking the zinc coating .14
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive.17
Bibliography .24

prEN 10348:2006 (E)
Foreword
This document (prEN 10348:2006) has been prepared by Technical Committee ECISS/TC 19 “Concrete
reinforcing and prestressing steels - Properties, dimensions, tolerances and specific tests”, the secretariat of
which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under Mandate M/115 given to CEN by the European Commission and the
European Free Trade Association and supports essential requirements of the EU Construction Products
Directive (89/106/EEC).
For relationship with the EU Construction Products Directive, see informative Annex ZA, which is an integral
part of this document.
This document does not apply to galvanized (hot-dip zinc coated) reinforcement for prestressing or
components of these reinforcements.
prEN 10348:2006 (E)
1 Scope
This European Standard specifies requirements for galvanized (hot-dip zinc coated) reinforcing steel in the
form of bars, coils (rod, wire), welded fabric and lattice girder for the reinforcement of concrete.
It specifies seven classes of coating, class A to class G, corresponding to different coating masses (see 9.5.4).
This specification may also be understood to cover other classes of coating whose details are not stated in
this edition of the standard but whose specified values of properties are defined consistenly with Clause 9 and
the conformity of which is carried out according to Clause 10.
This European Standard does not apply to galvanized (hot-dip zinc coated) reinforcement for prestressing or
components of these reinforcements.
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.
EN 10080, Steel for the reinforcement of concrete – Weldable reinforcing steel – General
EN 10204, Metallic products – Types of inspection documents
EN ISO 1461, Hot dip galvanized coating on fabricated iron and steel articles – Specifications and test
methods (ISO 1461:1999)
EN ISO 2178, Non-magnetic coatings on magnetic substrates – Measurement of coating thickness – Magnetic
methods (ISO 2178:1982)
EN ISO 15630-1:2002, Steel for the reinforcement and prestressing of concrete – Test methods – Part 1:
Reinforcing bars, wire rod and wires (ISO 15630-1:2002)
EN ISO 15630-2, Steel for the reinforcement and prestressing of concrete – Test methods – Part 2: Welded
fabric (ISO 15630-2:2002)
3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply:
3.1
hot-dip galvanizing
any process in which the product is immersed in a bath of molten zinc
3.2
bundle
two or more bars properly bound together
3.3
coated bar
reinforcing steel bar (plain or ribbed) which has been coated with zinc and/or zinc-iron alloys
prEN 10348:2006 (E)
3.4
coated coil (rod or wire)
steel coil (plain or ribbed) which has been coated with zinc and/or zinc-iron alloys
3.5
coated welded fabric
sheet of steel welded fabric which has been coated with zinc and/or zinc-iron alloys
3.6
coated lattice girder
lattice girder which has been coated with zinc and/or zinc-iron alloys
3.7
fabricator
any organization which cuts and/or bends coated reinforcing steel bar, coil (rod, wire), welded fabric and/or
lattice girder
3.8
longitudinal rib
uniform continuous rib parallel to the axis of the reinforcing steel bar
3.9
test unit
the quantity of coated reinforcing steel that is represented by the sample which has been tested
3.10
manufacturer
any organization which produces coated reinforcing steel bar, coil (rod, wire), welded fabric and/or lattice
girder
3.11
transverse rib
any rib on the surface of the reinforcing steel bar or coil (rod, wire) other than a longitudinal rib
3.12
steel reinforcing products
reinforcing steel bar, coil (rod, wire), welded fabric and lattice girder
4 Symbols
Symbols used in this European Standard are listed in Table 1.
prEN 10348:2006 (E)
Table 1 — List of symbols
Symbol Description Unit
d Nominal diameter of the coated product mm
n
e Average thickness of the zinc coating
µm
f Relative rib area -
R
f Relative indentation area -
P
L Length of the test piece (see Table A.1) mm
o
m Mass of zinc per unit area g/m
M Mass of the uncoated test piece g
M Mass of the zinc coated test piece g
z
Mass of the zinc g
∆ M
S Total coated area of the test piece mm
5 Materials
5.1 Hot dip galvanizing bath
The chemical composition of the contents of the hot dip galvanizing bath shall comply with (the relevant
clauses in) EN ISO 1461.
5.2 Repair material
Material for repairing damaged coating and renovating uncoated areas shall be an appropriate zinc-rich
formulation (paint).
6 Designation
The designation of the products shall be in accordance with EN 10080, except the reference to EN 10080.
In addition, the designation shall include the following:
a) A reference to this European Standard.
b) The additional symbol +Z (hot-dip zinc coating) added to the technical class(es) of steel(s) and the coating
class (see Table 2).
7 Information to be supplied at the time of enquiry and order
The following information shall be supplied at the time of enquiry and order:
 quantity ordered;
 the designation of the product in accordance with Clause 6;
 the packaging and protection requirements;
prEN 10348:2006 (E)
 surface treatment if required (see Clause 8);
 the requirements for documentary information to accompany the delivery (e.g. delivery note, type and
content of inspection document according to EN 10204);
 special requirements for labelling.
8 Manufacture (galvanizing)
It is at the discretion of the manufacturer to choose the galvanization method, unless otherwise agreed.
Zinc coating processes can be subdivided in two main categories:
1. zinc coating applied before further working operations (e.g. cutting, welding, bending, etc);
2. zinc coating applied to the final reinforcing steel products not subject to bending.
Any further surface treatment of the galvanized coating and its method of application may be specified (e.g.
passivation, etc.).
NOTE The manufacturer should exercise due care:
 to avoid distortion or cracking of the steel reinforcement occurring during galvanizing; and
 of steel reinforcement that is susceptible to embrittlement in processing.
9 Performance characteristics
9.1 Chemical composition
For the chemical composition EN 10080 shall apply.
9.2 Mechanical properties
The mechanical properties of galvanized reinforcing steels shall be those of the technical class agreed at the
time of enquiry and order (see EN 10080 and the non conflicting product specification defining the technical
class).
No retesting of mechanical properties is required for products on which the zinc coating is applied at a
o
temperature below or equal to 465 C. Retesting of mechanical properties is necessary for products on which
o
the zinc coating is applied at a temperature above 465 C, to prove that the mechanical properties of the
technical class are maintained.
9.3 Dimensions, mass per metre and tolerances
The nominal diameter (without zinc coating) and cross-sectional area of galvanized reinforcing steel which
include the zinc coating, shall meet the requirements in EN 10080. The requirements on dimensions, mass
per metre and tolerances in EN 10080 shall apply.
9.4 Bond strength and surface geometry
The requirements in the relevant product specification for the technical class shall apply.
prEN 10348:2006 (E)
9.5 Coating characteristics
9.5.1 General
The characteristics of the zinc coating are
 finish and appearance;
 adherence;
 mass of zinc deposited per unit area;
 coating continuity.
9.5.2 Finish and appearance
9.5.2.1 General
The surface finish of the zinc coating shall be in accordance with EN ISO 1461:1999, 6.1.
9.5.2.2 Permissible amount of damaged coating and repair of damaged coating
Damaged coating discernible to a person with normal or corrected vision shall be repaired with an appropriate
zinc-rich formulation (paint).
The total damaged surface area, prior to repair with a zinc-rich formulation (paint), shall not exceed 0,5 % of
the surface area in any one metre length of the reinforcing steel. This limit on repaired damage does not
include sheared or cut ends.
NOTE 1 When coated steel reinforcing products bars, coils and welded fabric, are sheared, saw-cut, or cut by other
means during the manufacturing process, the cut ends should be repaired with the same zinc-rich formulation (paint) that
is used for the repair of damaged coating.
The coating at repaired areas shall have a minimum thickness as specified for the relevant class (see 9.5.4).
NOTE 2 If the total damaged surface area in any one metre length of the bar or coil exceeds 0,5 % of the surface area,
that section should be removed from the coated bar or wire and discarded.
9.5.3 Adherence
The adherence of the zinc coating shall be evaluated by a bend test on the coated product (see 10.2.3.2.1).
The mandrel diameter shall be 3 d for nominal diameters ≤ 16 mm and 6 d for nominal diameters > 16 mm.
n n
This does not apply to Category 2 (see Clause 8).
9.5.4 Mass of zinc deposited per unit area
The mass of zinc deposited per nominal unit area (m) shall not be less than the values specified in Table 2
(see 10.2.3.2.2).
prEN 10348:2006 (E)
Table 2 — Specified values of the mass of zinc per unit area
Class m
g/m
A 1600
B 1350
C 1100
D 850
E 600
F 350
G 150
If the coating thickness in micrometres is requested, it shall be calculated by using the formula
e = m/7,14           (1)
where
 e is the value of the thickness, expressed in micrometres (µm);
 m is the value of the mass of zinc per unit area, expressed in grams per square metre (g/m²), see (3).
The mass of zinc per unit area shall be determined using the provisions given in Annex A.
9.5.5 Coating continuity
The coating continuity shall be such that the average value of the coating thickness determined in accordance
with the method described in A.1.2 shall not be less than the minimum thickness values stated in 9.5.4.
Local value may be lower but not less than 60% of the minimum values given in Table 2.
10 Evaluation of conformity
10.1 General
The compliance of galvanized steel with the requirements of this European Standard and with the stated
values (including classes) shall be demonstrated by:
 initial type testing (see also 9.2);
 factory production control (see also 9.2), including product assessment;
 continuous surveillance and audit testing.
The general provisions of EN 10080:2005, Clause 8, shall apply.
prEN 10348:2006 (E)
10.2 Factory production control
10.2.1 General
Reinforcing steels according to this European Standard shall be produced under a permanent system of
factory production control, which shall ensure the same level of confidence in the conformity of the finished
product, whatever the manufacturing process.
The system of factory production control shall include evaluation of specified properties, as described in
10.2.2 and 10.2.3.
Manufacturers having a factory production control system which complies with EN ISO 9001 and which
addresses the requirements of this document are recognised as satisfying the factory production control
requirements of this document.
10.2.2 Sampling and testing
The test unit shall consist of zinc-coated products of
 one type of product form (bars, coils, …);
 one steel grade;
 one nominal diameter or the same geometrical characteristics;
 the same category (see Clause 8);
with a maximum of 20 t for inspection by batch or with a maximum of 50 t for inspection by cast.
For each test unit a minimum of three samples shall be taken.
The minimum number of tests for each sample shall be as follows:
 3 bend tests for adherence of coating (not required for products of category 2);
o
 1 tensile test for products which have been galvanized at a temperature above 465 C;
 1 shear test for lattice girders and welded fabric;
 3 for zinc coating check (mass per unit area and coating continuity);
 3 for f for f or equivalent bond tests; evaluation according to EN 10080. This requirement does not apply
R p
to welded fabrics and lattice girders.
10.2.3 Evaluation of test results
10.2.3.1 Mechanical properties
For the mechanical properties EN 10080 shall apply.
10.2.3.2 Zinc coating
10.2.3.2.1 Adherence
After the bend test, the coating shall not show cracking on the outside radius of the bent sample bar larger
than 0,3 mm. In addition, the coating shall be adherent so it cannot be removed by any reasonable process of
handling.
prEN 10348:2006 (E)
10.2.3.2.2 Check of the zinc mass per unit area
10.2.3.2.2.1 Chemical dissolution method
Determine the difference
∆M = M – M           (2)
z
between the masses of the coated and uncoated sample for each of the three samples. This mass represents
the mass of the zinc coating over the total area, S, of the uncoated sample.
The mass of zinc deposited per unit area, m, is
∆M
m =           (3)
S
The average values of the coating mass as evaluated according to A.1.2 shall be at least the values given in
Table 2 for the corresponding class.
10.2.3.2.2.2 Magnetic coating thickness measurement method
The zinc mass per unit area expressed in grams per square metre (g/m ) is equal to the product of the
arithmetic mean of the measured thickness, evaluated according to A.1.3, expressed in micrometres (µm)
multiplied by 7,14.
In case of dispute, the only valid results shall be those obtained by the chemical dissolution method.
10.2.3.2.2.3 Zinc coating continuity
The average and individual values of the coating thickness shall be evaluated according to A.1.3.
10.2.4 Cancellation of tests
In case of incorrect procedure, the test shall not be taken into account. Incorrect procedure means defective
preparation, incorrect mounting in the test machine, or any other similar problem.
10.2.5 Retests
If any test piece for geometrical and mechanical properties, zinc mass per unit area or coating thickness and
continuity, fails to meet the specified requirements, the product from which it stems shall be discarded.
Six further coated reinforcing steel samples from the same test unit sha
...