Metallic and other inorganic coatings - Phosphate conversion coating of metals (ISO 9717:2017)

ISO 9717:2017 specifies a process for the confirmation of requirements for phosphate coatings which are usually destined for application on ferrous materials, zinc, cadmium and their alloys (see Annex B).

Metallische und andere anorganische Überzüge - Phosphatüberzüge auf Metallen (ISO 9717:2017)

Revêtements métalliques et autres revêtements inorganiques - Couches de conversion au phosphate sur métaux (ISO 9717:2017)

ISO 9717:2017 spécifie un procédé pour la confirmation des exigences relatives aux couches de phosphate qui sont généralement destinées à être produites sur les matériaux ferreux, le zinc, le cadmium et leurs alliages (voir Annexe B).

Kovinske in druge anorganske prevleke - Fosfatne prevleke na kovinah (ISO 9717:2017)

Ta dokument določa postopek za potrditev zahtev za fosfatne prevleke, ki so običajno namenjene za nanos na železove materiale, cink, kadmij in njihove zlitine (glej dodatek B).

General Information

Status
Published
Publication Date
24-Oct-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
25-Oct-2017
Completion Date
25-Oct-2017

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SLOVENSKI STANDARD
SIST EN ISO 9717:2018
01-januar-2018
1DGRPHãþD
SIST EN ISO 9717:2014
Kovinske in druge anorganske prevleke - Fosfatne prevleke na kovinah (ISO
9717:2017)

Metallic and other inorganic coatings - Phosphate conversion coating of metals (ISO

9717:2017)

Metallische und andere anorganische Überzüge - Phosphatüberzüge auf Metallen (ISO

9717:2017)

Revêtements métalliques et autres revêtements inorganiques - Couches de conversion

au phosphate sur métaux (ISO 9717:2017)
Ta slovenski standard je istoveten z: EN ISO 9717:2017
ICS:
25.220.40 Kovinske prevleke Metallic coatings
SIST EN ISO 9717:2018 en

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

---------------------- Page: 1 ----------------------
SIST EN ISO 9717:2018
---------------------- Page: 2 ----------------------
SIST EN ISO 9717:2018
EN ISO 9717
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2017
EUROPÄISCHE NORM
ICS 25.220.20 Supersedes EN ISO 9717:2013
English Version
Metallic and other inorganic coatings - Phosphate
conversion coating of metals (ISO 9717:2017)

Revêtements métalliques et autres revêtements Metallische und andere anorganische Überzüge -

inorganiques - Couches de conversion au phosphate Phosphatüberzüge auf Metallen (ISO 9717:2017)

sur métaux (ISO 9717:2017)
This European Standard was approved by CEN on 21 September 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 9717:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 9717:2018
EN ISO 9717:2017 (E)
Contents Page

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

---------------------- Page: 4 ----------------------
SIST EN ISO 9717:2018
EN ISO 9717:2017 (E)
European foreword

This document (EN ISO 9717:2017) 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 April 2018, and conflicting national standards shall be

withdrawn at the latest by April 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 9717:2013.

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 9717:2017 has been approved by CEN as EN ISO 9717:2017 without any modification.

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SIST EN ISO 9717:2018
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SIST EN ISO 9717:2018
INTERNATIONAL ISO
STANDARD 9717
Third edition
2017-09
Metallic and other inorganic
coatings — Phosphate conversion
coating of metals
Revêtements métalliques et autres revêtements inorganiques —
Couches de conversion au phosphate sur métaux
Reference number
ISO 9717:2017(E)
ISO 2017
---------------------- Page: 7 ----------------------
SIST EN ISO 9717:2018
ISO 9717:2017(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
---------------------- Page: 8 ----------------------
SIST EN ISO 9717:2018
ISO 9717:2017(E)
Contents Page

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

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

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

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

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

4 Information to be supplied by the purchaser to the processor ........................................................................... 1

5 Coating types and their importance ................................................................................................................................................. 2

5.1 Coating types ............................................................................................................................................................................................ 2

5.2 Designation of conversion coating ......................................................................................................................................... 2

6 Requirements .......................................................................................................................................................................................................... 3

6.1 Appearance ................................................................................................................................................................................................ 3

6.2 Coating mass per unit area ........................................................................................................................................................... 3

6.3 Post treatments ...................................................................................................................................................................................... 3

6.4 Correlation of coating thickness and area-related mass ..................................................................................... 4

7 Heat treatment ....................................................................................................................................................................................................... 4

Annex A (normative) Determination of phosphate conversion coating resistance to neutral

salt spray test ........................................................................................................................................................................................................... 5

Annex B (informative) General information................................................................................................................................................. 8

Annex C (informative) Identification of phosphate conversion coating .......................................................................11

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

© ISO 2017 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 9717:2018
ISO 9717:2017(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: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings,

Subcommittee SC 8, Chemical conversion coatings.

This third edition cancels and replaces the second edition (ISO 9717:2010), which has been technically

revised. The following changes have been made:
— the Scope has been clarified;
— the Normative references have been updated;
— the Terms and definitions have been replaced by a reference to ISO 2080;
— Clause 4 has been revised;
— the terms in Clause 5 have been revised;
— requirements for the phosphate layer have been revised;
— statements on corrosion resistance have been shifted to a new Annex A;
— Annex B on salt spray testing has been revised;
— Annex C to the properties of the phosphate layers has been revised.
iv © ISO 2017 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 9717:2018
ISO 9717:2017(E)
Introduction

Phosphate conversion coatings are applied to ferrous metals, aluminium, zinc and their alloys (including

zinc- and zinc-alloy-plated steel, cadmium and their alloys) either as an end finish or as an intermediate

layer for other coatings. They are intended to
— impart corrosion resistance,
— improve adhesion to paints and other organic finishes,

— facilitate cold-forming operations, such as wire drawing, tube drawing and extrusion, and

— modify surface frictional properties so as to facilitate sliding.

Phosphate conversion coatings are produced by treatment with solutions, the main constituents of

which are the appropriate dihydrogen orthophosphates. These coatings are applied principally to

ferrous materials and zinc, and differ in coating mass per unit area and apparent density, depending on

— the construction material and surface condition of the components,
— previous mechanical and chemical treatment of the components, and
— processing conditions for phosphating.

All phosphate conversion coatings are more or less porous but can be sealed substantially by subsequent

sealant processes.
© ISO 2017 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 9717:2018
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SIST EN ISO 9717:2018
INTERNATIONAL STANDARD ISO 9717:2017(E)
Metallic and other inorganic coatings — Phosphate
conversion coating of metals

WARNING — This document calls for the use of substances and/or procedures that could be

injurious to health if adequate safety measures are not taken. This document does not address any

health hazards, safety or environmental matters associated with its use. It is the responsibility

of the producers, purchasers and/or users of this document to establish appropriate health,

safety and environmentally acceptable practices and take appropriate actions.
1 Scope

This document specifies a process for the confirmation of requirements for phosphate coatings which

are usually destined for application on ferrous materials, zinc, cadmium and their alloys (see Annex B).

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 3892, Conversion coatings on metallic materials — Determination of coating mass per unit area —

Gravimetric methods

ISO 4519, Electrodeposited metallic coatings and related finishes — Sampling procedures for inspection by

attributes
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
3 Terms and definitions

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

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

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Information to be supplied by the purchaser to the processor
The following information shall be provided by the purchaser.

a) A description of the coating according to this document, i.e. ISO 9717 (see 5.2).

b) In cases of phosphating steel parts with tensile strength ≥ 1 000 MPa, possibly also locally

restricted, e.g. for case-hardened or cold-formed structures or in weld seam areas, the safety

against brittle fracture (hydrogen embrittlement) is of primary importance. The phosphatising

process shall be carried out in such a manner that any damage caused by hydrogen-induced

brittleness is excluded. Technical measures to minimize the risk of hydrogen-induced brittleness

shall be defined by the user and provided by the supplier/customer. Heat treatment in accordance

© ISO 2017 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 9717:2018
ISO 9717:2017(E)

with any recommendations cannot guarantee full freedom from hydrogen embrittlement. The

performance of the heat treatment shall be demonstrated by the supplier.

c) The sampling procedure, the acceptable quality limit or any other requirements and tests that

deviate from ISO 4519.
d) The surface treatment or phosphating.
e) The appearance of the surface.
f) The corrosion resistance.

g) The quality, appearance and condition of basis metal, if any of these properties affect the usability

and/or appearance of coatings.

h) Where applicable, technical measures to minimize the risk of hydrogen induced brittleness as

defined by the user.
5 Coating types and their importance
5.1 Coating types
The conversion coating shall be declared according to Table 1.
Table 1 — Declaration of conversion coatings
Elements detected Coating type
Iron (II) Feph
Manganese Mnph
Zinc (no Calcium) Znph
Zinc and Calcium ZnCaph

There are other coating types of zinc phosphate that are altered because of the build-in of iron

and/or nickel and/or manganese. This altered metal is usually present as a double salt, such as

Zn ME(PO ) x 4 H O, whereby ME can be Fe(II), Ni or Mn. Zn will continue to be the main metal

2 4 2 2

element of those coatings, which do not have separate markings in order to avoid confusion. It should

also be noted that metal taken from the basis material is included in the conversion coating.

Information for coating characteristics can be found in Annex B and the identification methods can be

found in Annex C.
5.2 Designation of conversion coating

The designation of the conversion coating shall consist of the following information:

a) number of this document, i.e. ISO 9717, and the designation “phosphate coating”;

b) followed by a hyphen;

c) designation of basis material: by means of the material chemical symbol (or the symbol of the

primary alloy components);
d) followed by a solidus(/);
e) a symbol describing the type
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kovinske in druge anorganske prevleke - Fosfatne prevleke na kovinah (ISO/DIS 9717)Metallische und andere anorganische Überzüge - Phosphatüberzüge auf MetallenRevêtements métalliques et autres revêtements inorganiques - Couches de conversion au phosphate sur métauxMetallic and other inorganic coatings - Phosphate conversion coating of metals25.220.40Kovinske prevlekeMetallic coatingsICS:Ta slovenski standard je istoveten z:prEN ISO 9717oSIST prEN ISO 9717:2016en,fr,de01-junij-2016oSIST prEN ISO 9717:2016SLOVENSKI

STANDARD
oSIST prEN ISO 9717:2016

© ISO 2016Metallic and other inorganic coatings — Phosphate conversion coating of metalsRevêtements métalliques et autres revêtements inorganiques — Couches de conversion au phosphate sur métauxICS: 25.220.20Reference numberISO/DIS 9717:2016(E)DRAFT INTERNATIONAL STANDARDISO/DIS 9717ISO/TC 107/SC 8 Secretariat: KATSVoting begins on: Voting terminates on:2016-04-28 2016-07-27THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.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.ISO/CEN PARALLEL PROCESSINGThis draft has been developed within the International Organization for Standardization (ISO), and processed under the ISO lead mode of collaboration as de Ðined in the Vienna AgreementäThis draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel

Ðive month enquiryäTo expedite distribution, this document is circulated as received from the committee secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at publication stage.oSIST prEN ISO 9717:2016

ISO/DIS 9717:2016(E) ii © ISO 2016 – All rights reservedCOPYRIGHT PROTECTED DOCUMENT©

ISO 2016, Published in SwitzerlandAll rights reservedä Unless otherwise speci Ðiedá 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 permissionä Permission can be requested from either ISO at the address below or ISOïs member body in the country of the requesteräISO copyright of ÐiceCh. de Blandonnet 8 • CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyright@iso.orgwww.iso.orgoSIST prEN ISO 9717:2016

ISO/DIS 9717:2016(E) iv © ISO 2016 – All rights reserved
Contents

Page Foreword .................................................................................................................................................................................... v Introduction............................................................................................................................................................................... v 1 Scope..............................................................................................................................................................................1 2 Normative references..............................................................................................................................................1 3 Terms and definitions .............................................................................................................................................1 4 Information to be supplied by the purchaser to the processor ...............................................................1 5 Coating types and their importance...................................................................................................................2 5.1 Coating types ..............................................................................................................................................................2 5.2 Designation of conversion coating .....................................................................................................................2 6 Requirements.............................................................................................................................................................3 6.1 Appearance .................................................................................................................................................................3 6.2 Coating mass per unit area....................................................................................................................................3 6.3 Corrosion resistance................................................................................................................................................3 Annex A (normative)

Determination of corrosion resistance................................................................................5 Annex B (normative)

Determination of resistance of phosphate

conversion coating to neutral salt spray test .............................................................................................................................................................6 B.1 Determination of resistance of phosphate conversion coatings to neutral salt spray test without supplementary treatments or organic coatings ...........................................................................6 B.2 Determination of resistance of phosphate conversion coatings, which have been subsequently treated with corrosion-preventing oils, to neutral salt spray test .............................6 B.2.1 Principle .......................................................................................................................................................................6 B.2.2 Supplementary treatment .....................................................................................................................................7 B.2.3 Procedure ....................................................................................................................................................................7 Annex C (informative)

Introductory information.......................................................................................................8 C.1 General..........................................................................................................................................................................8 C.2 Surface preparations ...............................................................................................................................................8 C.3 Application technology ...........................................................................................................................................9 C.4 Application of phosphate coatings .....................................................................................................................9 C.4.1 Cold Forming ..............................................................................................................................................................9 C.4.2 Sliding action ..............................................................................................................................................................9 C.4.3 Application of phosphate conversion coatings to improve corrosion resistance.......................... 10 Annex D (informative)

Identification of phosphate conversion coating......................................................... 11 D.1 General....................................................................................................................................................................... 11 D.2 Method 1 ................................................................................................................................................................... 11 D.2.1 Principle .................................................................................................................................................................... 11 D.2.2 Reagents .................................................................................................................................................................... 11 D.2.3 Apparatus ................................................................................................................................................................. 11 D.2.4 Test specimen ......................................................................................................................................................... 11 D.2.5 Procedure ................................................................................................................................................................. 11 D.3 Method 2 ................................................................................................................................................................... 11 D.4 Interpretation of results ..................................................................................................................................... 11 Bibliography ........................................................................................................................................................................... 13

oSIST prEN ISO 9717:2016
ISO/DIS 9717:2016(E) © ISO 2016 – All rights reserved v

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 WTO principles in the Technical Barriers to Trade (TBT) see the following URL:

Foreword - Supplementary information The committee responsible for this document is ISO/TC 107/SC 8, Chemical conversion coatings.

oSIST prEN ISO 9717:2016
ISO/DIS 9717:2016(E) vi © ISO 2016 – All rights reserved

Introduction Phosphate conversion coatings are applied to ferrous metals, aluminium, zinc and their alloys (including zinc- and zinc-alloy-plated steel, cadmium and their alloys) either as an end finish or as an intermediate layer for other coatings. They are intended to a) impart corrosion resistance, b) improve adhesion to paints and other organic finishes, c) facilitate cold-forming operations, such as wire drawing, tube drawing and extrusion, and d) modify surface frictional properties so as to facilitate sliding. Phosphate conversion coatings are produced by treatment with solutions, the main constituents of which are the appropriate dihydrogen orthophosphates. These coatings are applied principally to ferrous materials, aluminium, zinc and cadmium and differ in coating mass per unit area and apparent density, depending on a) the construction material and surface condition of the components, b) previous mechanical and chemical treatment of the components, and c) processing conditions for phosphating. All phosphate conversion coatings are more or less porous but can be sealed substantially by subsequent sealing processes. oSIST prEN ISO 9717:2016

DRAFT INTERNATIONAL STANDARD ISO/DIS 9717:2016(E)
© ISO 2016 – All rights reserved 1

Metallic and other inorganic coatings — Phosphate conversion coating of metals WARNING — This International Standard may not be compliant with some countries' health, safety and environmental legislations and calls for the use of substances and/or procedures that may be injurious to health if adequate safety measures are not taken. This International Standard does not address any health hazards, safety or environmental matters and legislations associated with its use. It is the responsibility of the producers, purchasers and/or user of this International Standard to establish appropriate health, safety and environmentally acceptable practices and take appropriate actions to comply with any national, regional and/or international rules and regulations. Compliance with this International Standard does not in itself confer immunity from legal obligations. 1 Scope This International Standard specifies a process for the determination of requirements for phosphate coatings which are basically destined for application on ferrous material, aluminium, zinc, cadmium and there alloys (see Annex A). 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.

ISO 2080, Metallic and other inorganic coatings — Surface treatment, metallic and other inorganic coatings — Vocabulary ISO 3892, Conversion coatings on metallic materials — Determination of coating mass per unit area — Gravimetric methods ISO 4519, Electrodeposited metallic coatings and related finishes — Sampling procedures for inspection by attributes ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2080 apply. 4 Information to be supplied by the purchaser to the processor The following information shall be given by the customer: a) description of coating; b) in case of phosphating steel parts with a strength class 10.9/10, the safety against brittle fracture (hydrogen embrittlement) is of primary importance. The phosphatising process must be carried out in such a manner that that any damage because of hydrogen induced brittleness is excluded. Technical oSIST prEN ISO 9717:2016

ISO/DIS 9717:2016(E) 2 © ISO 2016 – All rights reserved

measures to minimise the risk of hydrogen induced brittleness have to be defined by the user respectively by the customer; c) the sampling procedure, the acceptable quality limit or any other requirement and test whenever they deviate from ISO 4519; d) the surface treatment or phosphating; e) the appearance of the surface; f) the corrosion resistance; g) the quality, appearance and condition of base metal, if any of these properties affect the usability and /or appearance of coatings. Heat treatment in accordance with the recommendations cannot guarantee full freedom from hydrogen embrittlement. Inspection procedures should be set whenever possible. 5 Coating types and their importance 5.1 Coating types The conversion coating shall be declared according to Table 1. Table 1 — Declaration of conversion coatings Elements detected Coating type Me (Fe) Manganese Zinc (no Calcium) Zinc and calcium Feph Mnph Znph ZnCaph

There are other coating types of zinc phosphate, which are altered because of the build-in of iron and/or nickel and /or manganese. This altered metal is usually present as a double salt, like Zn2ME(PO4)2 x 4 H2O, whereby ME can be Fe(II), Ni or Mn. Zinc will continue to be the main metal part of those coatings, which do not have an own marking to avoid confusion. It should also be noted that metal taken from the basic material, is included in the conversion coating. 5.2 Designation of conversion coating The designation of the conversion coating shall consist of the following information: a) number of this standard; b) followed by a hyphen; c) designation of basic material; by means of the material chemical symbol (or the symbol of the primary alloy components) (see Note 1); d) followed by a solidus(/); e) a symbol describing the type of coating; oSIST prEN ISO 9717:2016

ISO/DIS 9717:2016(E) © ISO 2016 – All rights reserved 3

f) solidus (/); g) a symbol, which indicates the function of the conversion coating as follows:  r =

adhesion promoter and/or corrosion protection  z = Simplification of cold forming  g = Reduction of friction  e = electrical insulation h) solidus (/); i) a symbol, which indicates the surface-related mass per square metre w

...

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