Metallic coatings - Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment (ISO 19598:2016)

ISO 19598:2016 applies to electrodeposited zinc and zinc-alloy coatings on iron and steel with Cr(VI)-free passivation. The zinc-alloy coatings contain nickel or iron as alloying elements (referred to as zinc/nickel and zinc/iron coatings, respectively).
The main purpose of the coatings or coating systems is protecting iron and steel components against corrosion.
ISO 19598:2016 specifies
- the designations to be used for the above coating systems,
- the minimum corrosion resistance to be achieved in specified test procedures, and
- the minimum coating thicknesses required.

Metallische Überzüge - Galvanische Zink- und Zinklegierungsüberzüge auf Eisenwerkstoffen mit zusätzlichen Cr(VI)-freien Behandlungen (ISO 19598:2016)

Revêtements métalliques - Revêtements électrolytiques de zinc et d'alliages de zinc sur du fer ou de l'acier avec traitement supplémentaire sans Cr(VI) (ISO 19598:2016)

ISO 19598:2016 s'applique aux revêtements électrolytiques de zinc et d'alliages de zinc sur des composants en fer et en acier avec une passivation sans Cr(VI). Les revêtements électrolytiques d'alliages de zinc contiennent du nickel ou du fer comme éléments d'alliage (appelés respectivement «revêtements zinc/nickel» et «revêtements zinc/fer»).
Les revêtements ou systèmes de revêtements ont pour principal objectif de protéger les composants en fer et en acier contre la corrosion.
ISO 19598:2016 spécifie:
- les désignations à utiliser pour les systèmes de revêtement ci-dessus;
- la résistance minimale à la corrosion devant être obtenue lors des modes opératoires d'essai spécifiés, et
- les épaisseurs minimales de revêtement exigées.

Kovinske prevleke - Elektrogalvanske prevleke cinka in cinkovih zlitin na železu ali jeklu z dodanim Cr (VI) - prosti postopek (ISO 19598:2016)

Ta standard se uporablja za elektrogalvanske prevleke cinka in cinkovih zlitin na železu ali jeklu s pasivizacijo brez Cr (VI). Prevleke cinka in cinkovih zlitin vsebujejo nikelj ali železo kot legirna elementa (imenujejo se cink-nikljeve in cink-železove prevleke). Glavni namen prevlek ali sistemov prevlek je zaščita železnih in jeklenih sestavnih delov pred korozijo. Ta standard določa: – oznake za uporabo z zgornjimi sistemi prevlek; – najmanjšo korozijsko odpornost, ki jo je treba doseči v podanih preskusnih postopkih; in – najmanjšo potrebno debelino prevleke.

General Information

Status
Published
Publication Date
29-Nov-2016
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
30-Nov-2016
Completion Date
30-Nov-2016

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SLOVENSKI STANDARD
SIST EN ISO 19598:2017
01-februar-2017

Kovinske prevleke - Elektrogalvanske prevleke cinka in cinkovih zlitin na železu ali

jeklu z dodanim Cr (VI) - prosti postopek (ISO 19598:2016)

Metallic coatings - Electroplated coatings of zinc and zinc alloys on iron or steel with

supplementary Cr(VI)-free treatment (ISO 19598:2016)
Metallische Überzüge - Galvanische Zink- und Zinklegierungsüberzüge auf
Eisenwerkstoffen mit zusätzlichen Cr(VI)-freien Behandlungen (ISO 19598:2016)

Revêtements métalliques - Dépôts éléctroniques de zinc et d'alliage de zinc sur fer ou

acier avec traitements supplémentaires sans Cr(VI) (ISO 19598:2016)
Ta slovenski standard je istoveten z: EN ISO 19598:2016
ICS:
25.220.40 Kovinske prevleke Metallic coatings
77.120.60 Svinec, cink, kositer in Lead, zinc, tin and their
njihove zlitine alloys
SIST EN ISO 19598:2017 en,fr,de

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

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SIST EN ISO 19598:2017
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SIST EN ISO 19598:2017
EN ISO 19598
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2016
EUROPÄISCHE NORM
ICS 25.220.40
English Version
Metallic coatings - Electroplated coatings of zinc and zinc
alloys on iron or steel with supplementary Cr(VI)-free
treatment (ISO 19598:2016)

Revêtements métalliques - Revêtements Metallische Überzüge - Galvanische Zink- und

électrolytiques de zinc et d'alliages de zinc sur du fer Zinklegierungsüberzüge auf Eisenwerkstoffen mit

ou de l'acier avec traitement supplémentaire sans zusätzlichen Cr(VI)-freien Behandlungen (ISO

Cr(VI) (ISO 19598:2016) 19598:2016)
This European Standard was approved by CEN on 1 October 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19598:2016 E

worldwide for CEN national Members.
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SIST EN ISO 19598:2017
EN ISO 19598:2016 (E)
Contents Page

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

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SIST EN ISO 19598:2017
EN ISO 19598:2016 (E)
European foreword

This document (EN ISO 19598:2016) has been prepared by Technical Committee ISO/TC 107 “Metallic

and other inorganic coatings” in collaboration with Technical Committee CEN/TC 262 “Metallic and

other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys”

the secretariat of which is held by BSI.

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 May 2017, and conflicting national standards shall be

withdrawn at the latest by May 2017.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 19598:2016 has been approved by CEN as EN ISO 19598:2016 without any modification.

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SIST EN ISO 19598:2017
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SIST EN ISO 19598:2017
INTERNATIONAL ISO
STANDARD 19598
First edition
2016-11-15
Metallic coatings — Electroplated
coatings of zinc and zinc alloys on iron
or steel with supplementary Cr(VI)-
free treatment
Revêtements métalliques — Revêtements électrolytiques de
zinc et d’alliages de zinc sur du fer ou de l’acier avec traitement
supplémentaire sans Cr(VI)
Reference number
ISO 19598:2016(E)
ISO 2016
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SIST EN ISO 19598:2017
ISO 19598:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
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SIST EN ISO 19598:2017
ISO 19598:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Designation ................................................................................................................................................................................................................ 2

4.1 Electrodeposited coatings ............................................................................................................................................................. 2

4.2 Passivation .................................................................................................................................................................................................. 2

4.3 Post treatment ......................................................................................................................................................................................... 2

4.4 Significant (functional) surfaces .............................................................................................................................................. 3

4.5 Examples of designations .............................................................................................................................................................. 3

5 Information to be supplied by the purchaser to the electroplater ..................................................................3

6 Basis materials ....................................................................................................................................................................................................... 4

7 Coating and processing .................................................................................................................................................................................. 4

7.1 Surface preparation and deposition of zinc or zinc-alloy coating .............................................................. 4

7.2 Supplementary treatments .......................................................................................................................................................... 4

7.2.1 Passivation layers ............................................................................................................................................................ 4

7.2.2 Post treatment ................................................................................................................................................................... 5

7.3 Barrel-/rack-plating (handling of parts) .......................................................................................................................... 5

7.3.1 Barrel electroplating .................. ......................................................................................................................... .......... 5

7.3.2 Rack electroplating ........................................................................................................................................................ 5

7.4 Hydrogen embrittlement ............................................................................................................................................................... 5

7.4.1 Basic factors ......................................................................................................................................................................... 5

7.4.2 Choice of procedure ...................................................................................................................................................... 6

8 Requirements to be met by coatings and test methods ............................................................................................... 7

8.1 Thickness ..................................................................................................................................................................................................... 7

8.2 Adhesion ....................................................................................................................................................................................................... 7

8.3 Absence of Cr(VI) .................................................................................................................................................................................. 8

8.4 Accelerated corrosion testing .................................................................................................................................................... 8

8.4.1 General...................................................................................................................................................................................... 8

8.4.2 Minimum corrosion resistance of passivated zinc and zinc-alloy coatings .................. 8

9 Test report ................................................................................................................................................................................................................10

9.1 General information ........................................................................................................................................................................10

9.2 Coatings on materials having a tensile strength ≥1 000 N/mm .............................................................10

9.3 Test results...............................................................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................11

© ISO 2016 – All rights reserved iii
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SIST EN ISO 19598:2017
ISO 19598:2016(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,

as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the

Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.

The committee responsible for this document is ISO/TC 107, Metallic and other inorganic coatings,

Subcommittee SC 3, Electrodeposited coatings and related finishes.
iv © ISO 2016 – All rights reserved
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SIST EN ISO 19598:2017
ISO 19598:2016(E)
Introduction

The chromium(VI) free systems differ in 2 points from the chromium(VI)-containing systems:

a) there is no self-healing of the system;

b) higher temperature resistance (> 150 °C), the limit for chromium(VI) containing systems, is ≤ 70 °C.

© ISO 2016 – All rights reserved v
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SIST EN ISO 19598:2017
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SIST EN ISO 19598:2017
INTERNATIONAL STANDARD ISO 19598:2016(E)
Metallic coatings — Electroplated coatings of zinc and zinc
alloys on iron or steel with supplementary Cr(VI)-free
treatment
1 Scope

This International Standard applies to electrodeposited zinc and zinc-alloy coatings on iron and

steel with Cr(VI)-free passivation. The zinc-alloy coatings contain nickel or iron as alloying elements

(referred to as zinc/nickel and zinc/iron coatings, respectively).

The main purpose of the coatings or coating systems is protecting iron and steel components against

corrosion.
This International Standard specifies
— the designations to be used for the above coating systems,

— the minimum corrosion resistance to be achieved in specified test procedures, and

— the minimum coating thicknesses required.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 2080, Metallic and other inorganic coatings — Surface treatment, metallic and other inorganic

coatings — Vocabulary

ISO 3497, Metallic coatings — Measurement of coating thickness — X-ray spectrometric methods

ISO 3613:2010, Metallic and other inorganic coatings — Chromate conversion coatings on zinc, cadmium,

aluminium-zinc alloys and zinc-aluminium alloys — Test methods
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests

ISO 9587, Metallic and other inorganic coatings — Pretreatment of iron or steel to reduce the risk of

hydrogen embrittlement

ISO 9588, Metallic and other inorganic coatings — Post-coating treatments of iron or steel to reduce the

risk of hydrogen embrittlement

ISO 27830:2008, Metallic and other inorganic coatings — Guidelines for specifying metallic and inorganic

coatings
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 2080 apply.

© ISO 2016 – All rights reserved 1
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SIST EN ISO 19598:2017
ISO 19598:2016(E)
4 Designation
4.1 Electrodeposited coatings

The electrodeposited coatings shall be composed of zinc or zinc-alloys as listed in Table 1.

Table 1 — Designation of electrodeposited coatings
Symbol Definition
Zn Zinc coating without alloying element
ZnFe Zinc-alloy containing a mass fraction of 0,3 % to 1,0 % iron
ZnNi Zinc-alloy containing a mass fraction of 12 % to 16 % nickel
4.2 Passivation

Passivation is the production of conversion coatings by treating coatings with suitable Cr(VI)-free

solutions in order to improve their corrosion resistance. The conversion coating may optionally be dyed.

Since the Cr(VI)-free passivations are new coating systems, the new nomenclature is listed in Table 2.

Table 2 — Passivations
Colouration,
Type of passivation Code Notes
surface appearance
Transparent An Colourless to Often referred to as
coloured and iridescent “thin-layer passivation”
Iridescent Cn Coloured and Often referred to as
iridescent “thick-layer passivation”
Black Fn Black
Tints are permissible.
4.3 Post treatment
Application of a sealant or top coats increases corrosion resistance.

Sealant layers normally show a thickness of up to 2 µm and are composed of Cr(VI)-free organic and/or

inorganic compounds. Coatings that can be removed with cold cleaning agents, such as those with an

oil, grease or wax base, are not considered as sealants in the context of this International Standard.

Top coats are normally thicker than 2 µm and are Cr(VI)-free organic thin coatings which may need

elevated temperature curing. Particularly for coatings with black passivation, a postdip can be used for

increasing corrosion resistance and improving colour depth.

The impact of the post treatments mentioned to component properties such as contact resistance,

weldability, compatibility with fuels, performance in bonded joints, etc., when in service shall be

...

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