ISO 11125-5:2025

Preparation of steel substrates before application of paints and related products — Test methods for metallic blast-cleaning abrasives — Part 5: Determination of percentage defective particles and of microstructure

This document specifies test methods for the determination of the percentage of defective particles and of the microstructure of metallic blast-cleaning abrasives.

Préparation des subjectiles d'acier avant application de peintures et de produits assimilés — Méthodes d’essai pour abrasifs métalliques destinés au décapage par projection — Partie 5: Détermination du pourcentage de particules défectueuses et de la microstructure

Le présent document spécifie des méthodes d'essai pour la détermination du pourcentage de particules défectueuses et de la microstructure des abrasifs métalliques destinés à la préparation par projection. Ceci est l'une des parties de l'ISO 11125 traitant de l'échantillonnage et des essais des abrasifs métalliques destinés à la préparation par projection. Le type d'abrasifs métalliques et les exigences pour chacun sont donnés dans les différentes parties de l'ISO 11124. Les séries de normes ISO 11124 et ISO 11125 constituent une série cohérente de Normes internationales sur les abrasifs métalliques destinés à la préparation par projection. L'Annexe A donne des informations sur toutes les parties des deux séries.

General Information

• Status: Published
• Publication Date: 20-Jul-2025
• ICS: 25.220.10 - Surface preparation
• Technical Committee: ISO/TC 35/SC 12 - Preparation of steel substrates before application of paints and related products
• Drafting Committee: ISO/TC 35/SC 12 - Preparation of steel substrates before application of paints and related products
• Current Stage: 6060 - International Standard published
• Start Date: 21-Jul-2025
• Due Date: 13-Jun-2026
• Completion Date: 21-Jul-2025

Relations

• Consolidates: ISO 9220:2022 - Metallic coatings — Measurement of coating thickness — Scanning electron microscope method
• Effective Date: 17-Jun-2023
• Revises: ISO 11125-5:2018 - Preparation of steel substrates before application of paints and related products — Test methods for metallic blast-cleaning abrasives — Part 5: Determination of percentage defective particles and of microstructure
• Effective Date: 17-Jun-2023

Standards Content (Sample)

International
Standard
ISO 11125-5
Third edition
Preparation of steel substrates
2025-07
before application of paints and
related products — Test methods
for metallic blast-cleaning
abrasives —
Part 5:
Determination of percentage
defective particles and of
microstructure
Préparation des subjectiles d'acier avant application de peintures
et de produits assimilés — Méthodes d’essai pour abrasifs
métalliques destinés au décapage par projection —
Partie 5: Détermination du pourcentage de particules
défectueuses et de la microstructure
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Sampling . 1
6 Preparation of the sample . 2
7 Procedure . 2
7.1 Determination of cracks, voids and shrinkage .2
7.2 Determination of defectively shaped shot particles .2
7.3 Determination of defectively shaped grit particles .2
7.4 Determination of defectively shaped cylindrical particles .3
7.5 Determination of defectively shaped irregular particles .3
7.6 Determination of microstructure .3
8 Test report . 3
Bibliography . 4

iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 35, Paints and varnishes, Subcommittee SC 12,
Preparation of steel substrates before application of paints and related products, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition ISO 11125-5:2018, which has been technically
revised.
The main changes are
...

International
Standard
ISO 11125-5
Third edition
Preparation of steel substrates
before application of paints and
related products — Test methods
for metallic blast-cleaning
abrasives —
Part 5:
Determination of percentage
defective particles and of
microstructure
Préparation des subjectiles d'acier avant application de peintures
et de produits assimilés — Méthodes d’essai pour abrasifs
métalliques destinés au décapage par projection —
Partie 5: Détermination du pourcentage de particules
défectueuses et de la microstructure
PROOF/ÉPREUVE
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Sampling . 1
6 Preparation of the sample . 2
7 Procedure . 2
7.1 Determination of cracks, voids and shrinkage .2
7.2 Determination of defectively shaped shot particles .2
7.3 Determination of defectively shaped grit particles .2
7.4 Determination of defectively shaped cylindrical particles .3
7.5 Determination of defectively shaped irregular particles .3
7.6 Determination of microstructure .3
8 Test report . 3
Bibliography . 4
PROOF/ÉPREUVE
iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 35, Paints and varnishes, Subcommittee SC 12,
Preparation of steel substrates before application of paints and related products, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition ISO 11125-5:2018, which has been technically
revised.
The main changes are as follows:
— 7.5 has been
...

2025-04-23
Style Definition
...
Formatted: English (United Kingdom)
ISO/PRF 11125-5:2024(en)
Formatted
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ISO/TC 35/SC 12
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Secretariat: BSI
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Latin and Asian text, Adjust space between Asian text
Date: 2025-05-21
and numbers
Preparation of steel substrates before application of paints and
related products — Test methods for metallic blast-cleaning
abrasives —
Formatted: Cover Title_A2, Adjust space between Latin
Part 5:
and Asian text, Adjust space between Asian text and
Determination of percentage defective particles and of
numbers
microstructure
Préparation des subjectiles d'acier avant application de peintures et de produits assimilés — Méthodes
d'essaid’essai pour abrasifs métalliques destinés à la préparationau décapage par projection —
Partie 5: Détermination du pourcentage de particules défectueuses et de la microstructure
Partie 5: Détermination du pourcentage de particules défectueuses et de la microstructure
PROOF
ISO 11125-5:2024(en)
Formatted: Default Paragraph Font
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (Switzerland)
E-mail: [e-mail]
Website: www.iso.org
Formatted: English (United Kingdom)
Field Code Changed
Published in Switzerland
Formatted: Hyperlink, No underline, Font color: Auto,
English (United Kingdom)
Formatted: English (United Kingdom)
ii
ISO 11125-5:2024(en)
Contents Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Foreword . iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Apparatus .1
5 Sampling .1
6 Preparation of the sample .2
7 Procedure .2
8 Test report .3
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Sampling . 1
6 Preparation of the sample . 2
7 Procedure . 2
8 Test report . 3
Bibliography . 5

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Latin and Asian text, Adjust space between Asian text
and numbers, Tab stops: Not at 18 cm
iii
ISO 11125-5:2024(en)
Foreword Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
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 document 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).
Formatted: English (United Kingdom)
Formatted: English (United Kingdom)
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
Formatted: English (United Kingdom)
constitute an endorsement.
Formatted: Adjust space between Latin and Asian text,
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
Adjust space between Asian text and numbers
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Formatted: Font: Not Italic
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
Formatted: Font: Not Italic
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
Formatted: Font: Not Italic
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12,
Formatted: Default Paragraph Font
Preparation of steel substrates before application of paints and related products, in collaboration with the
Formatted: Default Paragraph Font
European Committee for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
This third edition cancels and replaces the second edition ISO 11125-5: 2018, which has been technically
revised. Formatted: Indent: Left: 0 cm, First line: 0 cm, Adjust
space between Latin and Asian text, Adjust space
The main changes compared to the previous edition are as follows: between Asian text and numbers, Tab stops: Not at 0.7
cm + 1.4 cm + 2.1 cm + 2.8 cm + 3.5 cm + 4.2 cm +
— — 7.57.5 has been technically revised. 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
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A list of all parts in the ISO 11125 series can be found on the ISO website.
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Any feedback or questions on this document should be directed to the user’s national standards body. A
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complete listing of these bodies can be found at www.iso.org/members.html.
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iv
ISO/PRF 11125-5:2025(en)
Introduction
This is one of a number of parts of the ISO 11125 series dealing with the sampling and testing of metallic
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abrasives for blast-cleaning.
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The types of metallic abrasive and requirements on each are contained in the various parts of the ISO 11124
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series.
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The ISO 11124 and ISO 11125 series have been drafted as a coherent set of International Standards on metallic
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blast-cleaning abrasives.
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v
ISO/PRF 11125-5:2025(en)
vi
ISO/PRF 11125-5:20242025(en)
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Preparation of steel substrates before application of paints and
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related products — Test methods for metallic blast-cleaning between Asian text and numbers
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abrasives —
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Part 5:
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Determination of percentage defective particles and of microstructure
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1 Scope
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
This document specifies test methods for the determination of the percentage of defective particles and of the
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microstructure of metallic blast-cleaning abrasives.
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2 Normative references
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The following documents are referred to in the text in such a way that some or all of their content constitutes
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requirements of this document. For dated references, only the edition cited applies. For undated references,
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the latest edition of the referenced document (including any amendments) applies.
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ISO 11125--1, Preparation of steel substrates before application of paints and related products — Test methods
for metallic blast-cleaning abrasives — Part 1: Sampling
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ISO 11125--3, Preparation of steel substrates before application of paints and related products — Test methods
Kingdom)
for metallic blast-cleaning abrasives — Part 3: Determination of hardness
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3 Terms and definitions
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Kingdom)
No terms and definitions are listed in this document.
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ISO and IEC maintain terminology databases for use in standardization at the following addresses:
Kingdom)
— — ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
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— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
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4 Apparatus
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4.1 4.1 Ordinary laboratory apparatus and glassware.
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4.2 4.2 Metallurgical microscope, having a magnification of up to × 500.
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4.3 4.3 Binocular microscope, having a magnification of up to × 50. Formatted: Font: 11 pt, Not Bold
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5 Sampling
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Take a representative sample of the product to be tested, as described in ISO 11125-1. Formatted: Default Paragraph Font
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ISO/PRF 11125-5:20242025(en)
6 Preparation of the sample
Prepare and mount the sample as described in ISO 11125-3.
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7 Procedure
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7.1 Determination of cracks, voids and shrinkage
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