oSIST prEN 10244-2:2022

Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 2: Zinc or zinc alloy coatings

This document specifies the requirement for coating mass, other properties and testing of zinc and zinc alloy coatings on steel wire and steel wire products of circular or other section.

Stahldraht und Drahterzeugnisse - Überzüge aus Nichteisenmetall auf Stahldraht - Teil 2: Überzüge aus Zink oder Zinklegierungen

Dieses Dokument legt Anforderungen an Masse, andere Eigenschaften und Prüfung von Überzügen aus Zink und Zinklegierungen auf Stahldraht und Stahldrahterzeugnissen mit rundem oder anderem Querschnitt fest.

Fils et produits tréfilés en acier - Revêtements métalliques non ferreux sur fils d'acier - Partie 2 : Revêtement de zinc ou d'alliage de zinc

Le présent document spécifie les exigences relatives à la masse du revêtement, aux autres caractéristiques et aux essai des revêtements de zinc et d’alliage de zinc sur fils d’acier et produits dérivés, de section circulaire ou autre.

Jeklena žica in žični izdelki - Neželezne kovinske prevleke na jekleni žici - 2. del: Prevleke iz cinka in cinkovih zlitin

General Information

• Status: Not Published
• Public Enquiry End Date: 25-Oct-2022
• ICS: 25.220.40 - Metallic coatings
• ICS: 77.140.65 - Steel wire, wire ropes and link chains
• Technical Committee: IFEK - Ferrous metals
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 19-Aug-2022
• Due Date: 06-Jan-2023
• Ref Project: prEN 10244-2 - Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 2: Zinc or zinc alloy coatings

RELATIONS

• Revised: SIST EN 10244-2:2009 - Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 2: Zinc or zinc alloy coatings
• Effective Date: 16-Mar-2022

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 10244-2:2022
01-oktober-2022

Jeklena žica in žični izdelki - Neželezne kovinske prevleke na jekleni žici - 2. del:

Prevleke iz cinka in cinkovih zlitin

Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 2: Zinc

or zinc alloy coatings

Stahldraht und Drahterzeugnisse - Überzüge aus Nichteisenmetall auf Stahldraht - Teil

2: Überzüge aus Zink oder Zinklegierungen

Fils et produits tréfilés en acier - Revêtements métalliques non ferreux sur fils d'acier -

Partie 2 : Revêtement de zinc ou d'alliage de zinc
Ta slovenski standard je istoveten z: prEN 10244-2
ICS:
25.220.40 Kovinske prevleke Metallic coatings
77.140.65 Jeklene žice, jeklene vrvi in Steel wire, wire ropes and
verige link chains
oSIST prEN 10244-2:2022 en,fr,de

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

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oSIST prEN 10244-2:2022
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oSIST prEN 10244-2:2022
DRAFT
EUROPEAN STANDARD
prEN 10244-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2022
ICS 25.220.40; 77.140.65 Will supersede EN 10244-2:2009
English Version
Steel wire and wire products - Non-ferrous metallic
coatings on steel wire - Part 2: Zinc or zinc alloy coatings

Fils et produits tréfilés en acier - Revêtements Stahldraht und Drahterzeugnisse - Überzüge aus

métalliques non ferreux sur fils d'acier - Partie 2 : Nichteisenmetall auf Stahldraht - Teil 2: Überzüge aus

Revêtement de zinc ou d'alliage de zinc Zink oder Zinklegierungen

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 459/SC 6.

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 10244-2:2022 E

worldwide for CEN national Members.
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oSIST prEN 10244-2:2022
prEN 10244-2:2022 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Coating requirements.................................................................................................................................... 4

4.1 Requirements for the coatings material ................................................................................................. 4

4.2 Requirements relating to coating on the wire ..................................................................................... 5

4.2.1 Coating mass ..................................................................................................................................................... 5

4.2.2 Appearance of coating ................................................................................................................................... 7

4.2.3 Dipping test ....................................................................................................................................................... 7

4.2.4 Special finishes ................................................................................................................................................ 7

4.2.5 Adherence of coating ..................................................................................................................................... 8

5 Test conditions .............................................................................................................................................. 10

5.1 Selection of samples ..................................................................................................................................... 10

5.2 Determination of mass of coating ........................................................................................................... 10

5.2.1 General.............................................................................................................................................................. 10

5.2.2 Gravimetric method ..................................................................................................................................... 10

5.2.3 Gaseous volumetric method ..................................................................................................................... 11

5.3 Dipping test ..................................................................................................................................................... 16

5.3.1 Principle ........................................................................................................................................................... 16

5.3.2 Reagents ........................................................................................................................................................... 16

5.3.3 Preparation of test piece ............................................................................................................................ 16

5.3.4 Performing of the test ................................................................................................................................. 16

5.3.5 Interpretation of results ............................................................................................................................. 17

Bibliography ................................................................................................................................................................. 18

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oSIST prEN 10244-2:2022
prEN 10244-2:2022 (E)
European foreword

This document (prEN 10244-2:2022) 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 10244-2:2009.

In comparison with the previous edition, the following technical modifications have been made:

— the reference towards ASTM B750 for Zn-Alu alloys has been changed to ASTM B997;

— dipping test better specified for Zinc-Alu alloy coatings (see Table 3).

This European Standard for non-ferrous metallic coating on steel wire is made up of the following parts:

— Part 1: General principles
— Part 2: Zinc or zinc alloy coatings
— Part 3: Aluminium coatings
— Part 4: Tin coatings
— Part 5: Nickel coatings
— Part 6: Copper, bronze or brass coatings
Through its sub-committee SC 6 “Wire rod and wires” (secretariat: AFNOR).
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oSIST prEN 10244-2:2022
prEN 10244-2:2022 (E)
1 Scope

This document specifies the requirement for coating mass, other properties and testing of zinc and zinc

alloy coatings on steel wire and steel wire products of circular or other section.

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 1179, Zinc and zinc alloys — Primary zinc
EN 10218-1, Steel wire and wire products — General — Part 1: Test methods

EN 10244-1, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 1: General

principles
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp/
3.1
wire with zinc or zinc alloy coating

wire to which zinc or zinc alloy coating has first been applied to protect it against corrosion

Note 1 to entry: The coating method may be hot dipping in a bath of molten zinc or by means of an aqueous

solution of suitable electrolyte. In the hot dipping process wiping media may be used to modify the mass of coating.

3.2
zinc or zinc alloy coating

zinc to which other elements are deliberately added in order to obtain particular characteristics

Note 1 to entry: In all cases, the quantity of zinc in the alloy shall be minimum 50 %. The most common alloy

elements are aluminium, tin and nickel, but other elements may also be considered.

3.3
mass of coating

mass of zinc per unit of surface area expressed in grams per square metre of surface of bare wire

4 Coating requirements
4.1 Requirements for the coatings material

The zinc or zinc alloy used for the coating shall comply with the standard EN 1179. For zinc-alloy grades

not mentioned in the EN, the alloy shall be specified at the time of enquiry and order. For Zn-Al alloys,

reference is made to ASTM B997.

The ingot of the material used for the zinc coating shall be of minimum 99,95 % purity (according to Z3

of EN 1179) unless otherwise stated in the relevant product standard or other specification in the order.

Coatings applied by electrolysis shall contain a minimum of 99 % zinc.
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oSIST prEN 10244-2:2022
prEN 10244-2:2022 (E)
4.2 Requirements relating to coating on the wire
4.2.1 Coating mass

The minimum mass of zinc per unit of surface area of the wire shall comply with the requirements of

Table 1.
Table 1 — Mass requirements for a coating of Zn
Classes
Diameter d
A AB B C D A x 3
2 2 2 2 2 2
g/m g/m g/m g/m g/m g/m
0,15 ≤ d < 0,20 — — 15 — 10 —
0,20 ≤ d < 0,25 30 20 20 20 15 —
0,25 ≤ d < 0,32 45 30 30 25 15 —
0,32 ≤ d < 0,40 60 30 30 25 15 —
0,40 ≤ d < 0,50 85 55 40 30 15 —
0,50 ≤ d < 0,60 100 70 50 35 20 —
0,60 ≤ d < 0,70 115 80 60 40 20 —
0,70 ≤ d < 0,80 130 90 60 45 20 —
0,80 ≤ d < 0,90 145 100 70 50 20 —
0,90 ≤ d < 1,00 155 110 70 55 25 —
1,00 ≤ d < 1,20 165 115 80 60 25 —
1,20 ≤ d <1,40 180 125 90 65 25 540
1,40 ≤ d < 1,65 195 135 100 70 30 585
1,65 ≤ d < 1,85 205 145 100 75 30 615
1,85 ≤ d < 2,15 215 155 115 80 40 645
2,15 ≤ d < 2,50 230 170 125 85 45 690
2,50 ≤ d < 2,80 245 185 125 95 45 735
2,80 ≤ d < 3,20 255 195 135 100 50 765
3,20 ≤ d < 3,80 265 210 135 105 60 795
3,80 ≤ d < 4,40 275 220 135 110 60 825
4,40 ≤ d < 5,20 280 220 150 110 70 840
5,20 ≤ d < 8,20 290 — — 110 80 870
8,20 ≤ d ≤ 10,00 300 — — 110 80 900

The coating class with a designation starting with A relates to thick coatings (generally final coating).

Designations ending in B relate to classes usually but not always obtained by (zinc coating) and

subsequent drawing. Classes C and D are standard classes for low mass coating which are usually

produced, but not exclusively produced, by hot zinc dipping and then wiping.

A x 3 relates to very high mass requirement three times higher than class A. Other multiples of Class

A are possible and these classes will be identified in the same way, e.g. A x 4.
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oSIST prEN 10244-2:2022
prEN 10244-2:2022 (E)

If no class of zinc coating or no coating mass is specified in the coating it shall be called "regular coating".

Such a coating shall be not less than 1 g zinc mass per Kg of zinc coated wire (equivalent to the coating

mass in g/m not less than two times the wire diameter expressed in mm).
The requirements for zinc-aluminium coatings are given in Table 2.
Table 2 — Mass requirements for a coating of ZnAl alloy
Mass of coating
g/m
Diameter
A AB B E
0,20 ≤ d < 0,25 — 20 20
0,25 ≤ d < 0,40 — 30 30
0,40 ≤ d < 0,50 85 55 40
0,50 ≤ d < 0,60 100 70 50
0,60 ≤ d < 0,70 115 80 60 40
0,70 ≤ d < 0,80 130 90 60
0,80 ≤ d < 0,90 145 100 70
0,90 ≤ d < 1,00 155 110 70
1,00 ≤ d < 1,20 165 115 80
1,20 ≤ d < 1,40 180 125 90
1,40 ≤ d < 1,65 195 135 100
1,65 < d < 1,85 205 145 100
1,85 ≤ d < 2,15 215 155 115
2,15 ≤ d < 2,50 230 170 125
2,50 ≤ d < 2,80 245 185 125
2,80 ≤ d < 3,20 255 195 135
3,20 ≤ d < 3,80 265 210 135
3,80 ≤ d < 4,40 275 220 135
4,40 ≤ d < 5,20 280 220 150
5,20 ≤ d < 8,20 290 — —
8,20 ≤ d < 10,00 300 — —

The coating class with a designation starting with A relates to thick coatings (generally final coating).

Designations ending in B relate to classes usually but not always obtained by (zinc coating) and subsequent

drawing.

The corrosion resistance of this class E shall be at least equivalent of these from a zinc coating according to

Table 1 class B.

For other zinc alloy coatings, the manufacturer and supplier shall agree on the required coating mass.

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oSIST prEN 10244-2:2022
prEN 10244-2:2022 (E)
4.2.2 Appearance of coating

The coating applied to the wire shall be reasonably smooth and as evenly distributed as industrial

technology allows and not show discontinuities such as bare patches, dross contamination, etc.

NOTE The zinc-aluminium alloy might show difference in colour and become darker with time. This does not

affect the corrosion protection performance.
4.2.3 Dipping test

When specified, the dipping (immersion) test shall be carried out according to the procedure detailed

in 5.3. However, it should be pointed out that there is no correlation between the number of dips and

the mass of the coating and the result is influenced as much by the conditions of manufacture of the

coating as by the uniformity of the coating.
Table 3 gives the minimum number of immersions for coatings of classes A and AB.
The dipping test does not apply to class B, C and D and E.
Table 3 — Minimum number of dips
Class A of coating Class AB of coating
Nominal diameter
Number of dips Number of dips
a b a b
of 1 min of 1/2 min of 1 min of 1/2 min
0,40 ≤ d < 0,60 — 1 — —
0,60 ≤ d < 0,90 1 — — 1
0,90 ≤ d < 1,00 1 1 — 1
1,00 ≤ d < 1,40 1 1 1 —
1,40 ≤ d < 1,65 2 — 1 —
1,65 ≤ d < 1,85 2 — 1 —
1,85 ≤ d < 2,15 2 — 1 1
2,15 ≤ d < 2,80 2 1 1 1
2,80 ≤ d < 4,40 3 — 2 —
4,40 ≤ d < 5,20 3 1 2 —
5,20 ≤ d < 8,20 3 1 — —
8,20 ≤ d < 10,00 4 — — —
For Zinc-Alu alloy coatings, one dip equals 45 s instead of 1 min.
For Zinc-Alu alloy coatings, one dip equals 22 s instead of 1/2 min.
4.2.4 Special finishes

If drawing after galvanizing is required, it shall be stipulated at the time of enquiry and order or in the

appropriate product standard. The same also appli
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