oSIST prEN ISO 9717:2023
(Main)Metallic and other inorganic coatings - Phosphate conversion coating of metals (ISO/DIS 9717:2023)
Metallic and other inorganic coatings - Phosphate conversion coating of metals (ISO/DIS 9717:2023)
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 - Phosphatumwandlungsüberzüge auf Metallen (ISO/DIS 9717:2023)
Dieses Dokument legt die Anforderungen an Phosphatumwandlungsüberzüge fest, welche üblicherweise für die Aufbringung auf Eisenwerkstoffen, Aluminium, Zink, Cadmium und deren Legierungen (siehe Anhang B) bestimmt sind.
WARNUNG — Dieses Dokument verlangt die Verwendung von Substanzen und/oder Verfahren, die gesundheitsschädlich sein können, wenn keine geeigneten Sicherheitsvorkehrungen getroffen werden. Dieses Dokument enthält keine Ausführungen zu Gesundheitsgefährdungen, Sicherheits- oder Umweltaspekten, die mit seiner Anwendung in Zusammenhang stehen. Es liegt in der Verantwortung von Herstellern, Auftraggebern und/oder Anwendern dieses Dokumentes, geeignete Maßnahmen hinsichtlich Arbeits-, Gesundheits- und Umweltschutz festzulegen und umzusetzen.
Revêtements métalliques et autres revêtements inorganiques - Couches de conversion au phosphate sur métaux (ISO/DIS 9717:2023)
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/DIS 9717:2023)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 9717:2023
01-julij-2023
Kovinske in druge anorganske prevleke - Fosfatne prevleke na kovinah (ISO/DIS
9717:2023)
Metallic and other inorganic coatings - Phosphate conversion coating of metals (ISO/DIS
9717:2023)
Metallische und andere anorganische Überzüge - Phosphatumwandlungsüberzüge auf
Metallen (ISO/DIS 9717:2023)
Revêtements métalliques et autres revêtements inorganiques - Couches de conversion
au phosphate sur métaux (ISO/DIS 9717:2023)
Ta slovenski standard je istoveten z: prEN ISO 9717
ICS:
25.220.20 Površinska obdelava Surface treatment
25.220.40 Kovinske prevleke Metallic coatings
oSIST prEN ISO 9717:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 9717:2023
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oSIST prEN ISO 9717:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9717
ISO/TC 107/SC 8 Secretariat: KATS
Voting begins on: Voting terminates on:
2023-04-21 2023-07-14
Metallic and other inorganic coatings — Phosphate
conversion coating of metals
Revêtements métalliques et autres revêtements inorganiques — Couches de conversion au phosphate sur
métaux
ICS: 25.220.20
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
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,
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STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 9717:2023(E)
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 2023
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9717
ISO/TC 107/SC 8 Secretariat: KATS
Voting begins on: Voting terminates on:
Metallic and other inorganic coatings — Phosphate
conversion coating of metals
Revêtements métalliques et autres revêtements inorganiques — Couches de conversion au phosphate sur
métaux
ICS: 25.220.20
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
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WHICH REFERENCE MAY BE MADE IN
Reference number
Email: copyright@iso.org
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 9717:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
© ISO 2023 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(E)
Contents Page
Foreword .iv
Introduction . vi
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 phosphate conversion coating . 2
5.3 Example for designation of phosphate conversion coating . 3
6 Requirements . 3
6.1 Appearance . 3
6.2 Coating mass per unit area . 3
6.3 Post treatment . 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
iii
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(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 of 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
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 fourth edition cancels and replaces the third edition (ISO 9717:2017), which has been technically
revised.
The main changes are as follows:
— the Introduction has been clarified (1 bracket shifted);
— 5.1 Table 1 formatted and for ZnpH second line added to describe types of Znph; new Table 1 copied
on Table C.1
— 5.2 and ff.: all terms are uniformed from “phosphate coating” or “conversion coating” to “phosphate
conversion coating” (when applicable);
— 5.2 and ff.: “after-treatment” was changed to “post treatment”; other definitions and spelling
changed according to ISO 2080;
— 6.3 Table 2: definition of T1 recharged, second sentence deleted (this is content of T2);
— 6.3: last sentence updated to describe impact of neutral salt spray test;
— 6.4: revision of 6.4, thickness measurement replaced by area related mass;
— Annex B: last sentence deleted: Table B.1 updated;
— Annex B: Table B.1 and B.3 headlines updated;
— Annex B: Table B.4 headline updated;
— Annex C: the element nickel has been added to C.1, C.2.3, C.2.5 and C.4; ICP was added as method to
C.2.3; XRF was added as method to C.3.
iv
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(E)
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(E)
Introduction
Phosphate conversion coatings are produced by treating substrates with appropriate solutions. The
main constituents of these solutions are the appropriate dihydrogen orthophosphates. These coatings
differ in coating mass per unit area and apparent density, depending on.
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 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 porous but can be sealed substantially by subsequent sealant
processes.
The International Organization for Standardization (ISO) draws attention to the fact that it is claimed
that compliance with this document may involve the use of a patent.
ISO takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured ISO that he/she is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In
this respect, the statement of the holder of this patent right is registered with ISO. Information may be
obtained from the patent database available at www.iso.org/patents.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those in the patent database. ISO shall not be held responsible for identifying
any or all such patent rights.
vi
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oSIST prEN ISO 9717:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 9717:2023(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 the requirements for phosphate conversion coatings which are usually
destined for application on ferrous materials, aluminium, zinc, cadmium, and their alloys (see Annex B).
2 Normative references
The following documents are referred to in the text in such a way that some or all 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 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 terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
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, also in locally restricted
areas, 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 phosphating process
shall be carried out in such a manner that a risk of hydrogen embrittlement is kept to a minimum.
Appropriate measures to minimize the risk of hydrogen embrittlement shall be specified by the
purchaser and applied by the supplier. Any heat treatment in accordance with specifications
1
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(E)
or recommendations cannot ensure complete prevention of hydrogen embrittlement. The
effectiveness of a heat treatment, if any, shall be verified 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 desired appearance of the treated surface.
f) The desired corrosion resistance.
g) The quality appearance and surface condition of the basis metal, if any, if these properties affect
the performance and/or appearance of coatings.
h) Where applicable, technical measures to minimize the risk of hydrogen embrittlement as specified
by the purchaser.
5 Coating types and their importance
5.1 Coating types
The phosphate conversion coating shall be designated in accordance with Table 1.
Table 1 — Designation of phosphate conversion coatings
Elements present in phosphate con-
Coating type
version coating
Iron (II) Feph
Manganese Mnph
Zinc (no Calcium)
Znph
Zinc and Mn, Ni, Fe(II) (no Calcium)
Zinc and Calcium ZnCaph
There are various 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 and/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 phosphate conversion coating
The designation of the phosphate 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 of coating;
f) followed by a solidus (/);
2
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oSIST prEN ISO 9717:2023
ISO/DIS 9717:2023(E)
g) a symbol, which indicates the function of the conversion coating as follows:
1. r = adhesion promoter and/or corrosion protection;
2. z = simplification of cold forming;
3. g = reduction of friction;
4. e = electrical insulation;
h) followed by a solidus (/);
i) a number, which indicates the surface-related mass per square metre with a measurement
uncertainty of ±30 %.
If the phosphate coating receives a supplementary treatment, the following information shall be added
to the designation:
j) solidus (/)
k) a symbol, which defines the supplementary treatment (see Table 2).
Repeat this process if necessary.
Solidi (/) shall be used to separate data fields in the designation corresponding to the different
s
...
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