Metallic and other inorganic coatings - Electroplated coatings of cadmium with supplementary treatments on iron or steel (ISO 2082:2017)

This document specifies the requirements of electroplated coatings of cadmium with supplementary
treatments on iron and steel. It includes information that is to be supplied by the purchaser to the
electroplater, and describes coating requirements, including those for heat treatment before and after
electroplating.
It is not applicable to coatings applied
— to sheet, strip or wire in the non-fabricated form,
— to close-coiled springs, or
— for purposes other than protective, intrinsic lubricity, ductility, electrical conductivity and low
contact resistance use.
This document does not specify requirements for the surface condition of the basis metal prior to
electrodeposition with cadmium.
The coating thickness that can be applied to threaded components can be limited by dimensional
requirements, including class or fit.
Additional information on corrosion resistance, rinsing and drying, processing parts in bulk and dyeing
of chromate conversion coatings is given in Annex C.

Metallische und andere anorganische Überzüge - Galvanische Cadmiumüberzüge auf Eisenwerkstoffen mit zusätzlicher Behandlung (ISO 2082:2017)

Revêtements métalliques et autres revêtements inorganiques - Dépôts électrolytiques de cadmium avec traitements supplémentaires sur fer ou acier (ISO 2082:2017)

L'ISO 2082:2017 spécifie les exigences relatives aux dépôts électrolytiques de cadmium accompagnés de traitements supplémentaires sur fer et acier. Elle inclut les informations à fournir par l'acheteur à l'électroplaste et décrit les exigences de revêtement, notamment celles relatives au traitement thermique avant et après dépôt électrolytique.
Elle n'est pas applicable aux revêtements appliqués:
- sur tôles, feuillards ou fils à l'état non façonné;
- sur des ressorts à spirales serrées;
- à des fins autres que la protection, l'aptitude intrinsèque à la lubrification, la ductilité, la conductivité électrique et la faible résistance de contact.
L'ISO 2082:2017 ne spécifie pas d'exigence portant sur l'état de surface du métal de base avant dépôt électrolytique au cadmium.
L'épaisseur du revêtement susceptible d'être appliqué sur les pièces filetées peut être limitée par des exigences dimensionnelles, y compris la classe ou l'ajustement.
Des informations supplémentaires sur la résistance à la corrosion, le rinçage et le séchage, le traitement de pièces en vrac et la coloration de couches de conversion au chromate sont fournies dans l'Annexe C.

Kovinske in druge anorganske prevleke - Galvanske prevleke kadmija z dodatno obdelavo na železu in jeklu (ISO 2082:2017)

Ta dokument določa zahteve za galvanske prevleke kadmija z dodatno obdelavo železa in jekla. Zajema informacije, ki jih mora kupec dostaviti izdelovalcu galvanske prevleke, in opisuje zahteve za prevleke, vključno s tistimi za toplotno obdelavo pred in po galvanizaciji.
Ne uporablja se za prevleke:
– za pločevine, trakove ali žice v nepredelani obliki,
– za vijačne vzmeti,
– ki so namenjene uporabi, ki ni zaščita, intrinzično mazanje, duktilnost, električna prevodnost in nizka kontaktna upornost.
Ta dokument ne določa zahtev za stanje površine osnovne kovine pred elektrodepozicijo s kadmijem.
Debelina prevleke, ki se lahko nanese na navojne komponente, je lahko omejena z dimenzijskimi zahtevami, vključno z razredom ali prileganjem.
Dodatne informacije o odpornosti na korozijo, izpiranju in sušenju, obdelavi delov v velikem obsegu in barvanju kromatnih premazov so podane v dodatku C.

General Information

Status
Published
Public Enquiry End Date
01-Jul-2016
Publication Date
15-Oct-2017
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Oct-2017
Due Date
10-Dec-2017
Completion Date
16-Oct-2017

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SLOVENSKI STANDARD
SIST EN ISO 2082:2017
01-november-2017
1DGRPHãþD
SIST EN ISO 2082:2009
Kovinske in druge anorganske prevleke - Galvanske prevleke kadmija z dodatno
obdelavo na železu in jeklu (ISO 2082:2017)
Metallic and other inorganic coatings - Electroplated coatings of cadmium with
supplementary treatments on iron or steel (ISO 2082:2017)
Metallische und andere anorganische Überzüge - Galvanische Cadmiumüberzüge auf
Eisenwerkstoffen mit zusätzlicher Behandlung (ISO 2082:2017)

Revêtements métalliques et autres revêtements inorganiques - Dépôts électrolytiques de

cadmium avec traitements supplémentaires sur fer ou acier (ISO 2082:2017)
Ta slovenski standard je istoveten z: EN ISO 2082:2017
ICS:
25.220.40 Kovinske prevleke Metallic coatings
SIST EN ISO 2082:2017 en

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

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SIST EN ISO 2082:2017
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SIST EN ISO 2082:2017
EN ISO 2082
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2017
EUROPÄISCHE NORM
ICS 25.220.40 Supersedes EN ISO 2082:2008
English Version
Metallic and other inorganic coatings - Electroplated
coatings of cadmium with supplementary treatments on
iron or steel (ISO 2082:2017)

Revêtements métalliques et autres revêtements Metallische und andere anorganische Überzüge -

inorganiques - Dépôts électrolytiques de cadmium avec Galvanische Cadmiumüberzüge auf Eisenwerkstoffen

traitements supplémentaires sur fer ou acier (ISO mit zusätzlicher Behandlung (ISO 2082:2017)

2082:2017)
This European Standard was approved by CEN on 24 June 2017.

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

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

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2082:2017 E

worldwide for CEN national Members.
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SIST EN ISO 2082:2017
EN ISO 2082:2017 (E)
Contents Page

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

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SIST EN ISO 2082:2017
EN ISO 2082:2017 (E)
European foreword

This document (EN ISO 2082:2017) 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 February 2018, and conflicting national standards

shall be withdrawn at the latest by February 2018.

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

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 2082:2008.

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 2082:2017 has been approved by CEN as EN ISO 2082:2017 without any modification.

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SIST EN ISO 2082:2017
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SIST EN ISO 2082:2017
INTERNATIONAL ISO
STANDARD 2082
Fourth edition
2017-07
Metallic and other inorganic
coatings — Electroplated coatings
of cadmium with supplementary
treatments on iron or steel
Revêtements métalliques et autres revêtements inorganiques —
Dépôts électrolytiques de cadmium avec traitements supplémentaires
sur fer ou acier
Reference number
ISO 2082:2017(E)
ISO 2017
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SIST EN ISO 2082:2017
ISO 2082:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, 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 2017 – All rights reserved
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SIST EN ISO 2082:2017
ISO 2082:2017(E)
Contents Page

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

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

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

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

3 Terms, definitions, abbreviated terms and symbols ....................................................................................................... 2

3.1 Terms and definitions ....................................................................................................................................................................... 2

3.2 Abbreviated terms ............................................................................................................................................................................... 2

3.3 Symbols ......................................................................................................................................................................................................... 2

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

4.1 Essential information ........................................................................................................................................................................ 3

4.2 Additional information .................................................................................................................................................................... 3

5 Designation ................................................................................................................................................................................................................ 3

5.1 General ........................................................................................................................................................................................................... 3

5.2 Designation specification ............................................................................................................................................................... 4

5.3 Designation of the basis material............................................................................................................................................ 5

5.4 Designation of heat treatment requirements ............................................................................................................... 5

6 Requirements .......................................................................................................................................................................................................... 5

6.1 Appearance ................................................................................................................................................................................................ 5

6.2 Thickness ..................................................................................................................................................................................................... 5

6.3 Conversion coatings and other supplementary treatments ............................................................................ 6

6.4 Adhesion of cadmium and chromate coatings ............................................................................................................. 6

6.5 Accelerated corrosion testing .................................................................................................................................................... 6

6.5.1 Neutral salt spray test.................................................................................................................................................. 6

6.5.2 Corrosion rating ............................................................................................................................................................... 7

6.6 Stress relief heat treatment before cleaning and metal deposition .......................................................... 7

6.7 Hydrogen-embrittlement-relief heat treatment after electroplating ...................................................... 7

6.8 Sampling ....................................................................................................................................................................................................... 8

Annex A (normative) Designation of supplementary treatments ......................................................................................... 9

Annex B (normative) Measurement of average thickness of coating on small articles ................................11

Annex C (informative) Additional information on corrosion resistance, rinsing and drying,

processing parts in bulk and dyeing of chromate conversion coatings ......... ...........................................12

Bibliography .............................................................................................................................................................................................................................13

© ISO 2017 – All rights reserved iii
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SIST EN ISO 2082:2017
ISO 2082:2017(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 voluntary nature of standards, 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: w w w . i s o .org/ iso/ foreword .html.

This document was prepared by the European Committee for Standardization (CEN) Technical

Committee CEN/TC 262, Metallic and other inorganic coatings, including for corrosion protection and

corrosion testing of metals and alloys, in collaboration with ISO Technical Committee TC 107, Metallic

and other inorganic coatings, Subcommittee SC 3, Electrodeposited coatings and related finishes, in

accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This fourth edition cancels and replaces the third edition (ISO 2082:2008), which has been technically

revised.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 2082:2017
ISO 2082:2017(E)
Introduction

Electrodeposits of cadmium are used to protect iron and steel from corrosion. Cadmium is anodic and

corrodes sacrificially, thus protecting ferrous basis metals even when exposed through pores or pits

in the cadmium. Electrodeposited cadmium coatings have traditionally been applied to iron or steel

from alkaline cyanide solutions, but in recent years, environmental concerns and regulations have led

to increased use of acid sulfate, neutral chloride and acid fluoborate cadmium solutions.

Because the appearance and serviceability of electroplated cadmium coatings are influenced by the

surface condition of the basis metal, agreement should be reached between the interested parties that

the surface of the basis metal is satisfactory for electroplating.

Although concerns have been raised about the use of cadmium due to safety and environmental effects,

there are critical applications, often aerospace-related, where the unique properties of electrodeposited

cadmium coatings, for example, their corrosion resistance, intrinsic lubricity, ductility, electrical

conductivity and low contact resistance, make continued use of cadmium coatings necessary.

The corrosion resistance of electroplated cadmium coatings and their tendency to tarnish when

handled can be improved by applying chromate conversion and other supplementary coatings.

Chemical conversion coatings that do not contain hexavalent chromium are commercially available

and their use is becoming more and more popular. The appearance of these substitutes may be

different from those produced with hexavalent chromium. Due to the REACH Regulations, however,

the use of hexavalent chromium compounds will be banned in Europe from September 2017 except

where specifically authorized. Other conversion coatings that are chromium-free are also available.

Substitutes are required to satisfy the corrosion requirements given in this document.

© ISO 2017 – All rights reserved v
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SIST EN ISO 2082:2017
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SIST EN ISO 2082:2017
INTERNATIONAL STANDARD ISO 2082:2017(E)
Metallic and other inorganic coatings — Electroplated
coatings of cadmium with supplementary treatments on
iron or steel

DANGER — Cadmium vapour is highly toxic by inhalation. During heat treatment, all precautions

should be taken to ensure that no person is exposed to it. Attention is also drawn to the danger

arising from welding, soldering or heating and other operations, in which the possibility that

cadmium will be vaporised exists. Because of its toxicity, cadmium should not be employed as a

coating for any article that will come in contact with food or beverages or containers in contact

with these items or any household goods.
1 Scope

This document specifies the requirements of electroplated coatings of cadmium with supplementary

treatments on iron and steel. It includes information that is to be supplied by the purchaser to the

electroplater, and describes coating requirements, including those for heat treatment before and after

electroplating.
It is not applicable to coatings applied
— to sheet, strip or wire in the non-fabricated form,
— to close-coiled springs, or

— for purposes other than protective, intrinsic lubricity, ductility, electrical conductivity and low

contact resistance use.

This document does not specify requirements for the surface condition of the basis metal prior to

electrodeposition with cadmium.

The coating thickness that can be applied to threaded components can be limited by dimensional

requirements, including class or fit.

Additional information on corrosion resistance, rinsing and drying, processing parts in bulk and dyeing

of chromate conversion coatings is given in Annex C.
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.

ISO 1463, Metallic and oxide coatings — Measurement of coating thickness — Microscopical method

ISO 2064, Metallic and other inorganic coatings — Definitions and conventions concerning the measurement

of thickness

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

coatings — Vocabulary

ISO 2177, Metallic coatings — Measurement of coating thickness — Coulometric method by anodic

dissolution

ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness —

Magnetic method
© ISO 2017 – All rights reserved 1
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SIST EN ISO 2082:2017
ISO 2082:2017(E)

ISO 2819, Metallic coatings on metallic substrates — Electrodeposited and chemically deposited coatings —

Review of methods available for testing adhesion

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

ISO 3543, Metallic and non-metallic coatings — Measurement of thickness — Beta backscatter method

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

aluminium-zinc alloys and zinc-aluminium alloys — Test methods

ISO 4518, Metallic coatings — Measurement of coating thickness — Profilometric method

ISO 4519:1980, Electrodeposited metallic coatings and related finishes — Sampling procedures for

inspection by attributes
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 10289, Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates —

Rating of test specimens and manufactured articles subjected to corrosion tests

ISO 10587, Metallic and other inorganic coatings — Test for residual embrittlement in both metallic-coated

and uncoated externally-threaded articles and rods — Inclined wedge method

ISO 15724, Metallic and other inorganic coatings — Electrochemical measurement of diffusible hydrogen in

steels — Barnacle electrode method
3 Terms, definitions, abbreviated terms and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 2064 and ISO 2080 apply.

ISO and IEC maintain terminological dat
...

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