ISO 11126-1:2025

Preparation of steel substrates before application of paints and related products — Specifications for non-metallic blast-cleaning abrasives — Part 1: General introduction and classification

This document describes a classification of non-metallic blast-cleaning abrasives for the preparation of steel substrates before application of paints and related products. It specifies the characteristics which are required for the complete designation of such abrasives. This document applies to abrasives supplied in the new or unused condition only. It does not apply to abrasives either during or after use. NOTE Although this document has been developed specifically to meet requirements for preparation of steelwork, the properties specified will generally be appropriate for use when preparing other material surfaces, or components, using blast-cleaning techniques. These techniques are described in ISO 8504-2.

Préparation des subjectiles d’acier avant application de peintures et de produits assimilés — Spécifications des abrasifs non métalliques destinés au décapage par projection — Partie 1: Introduction générale et classification

Le présent document décrit une classification des abrasifs non métalliques destinés à la préparation par projection des subjectiles d'acier avant application de peintures et produits assimilés. Il spécifie les caractéristiques exigées pour une désignation complète de ces abrasifs. Le présent document ne s'applique qu'aux abrasifs fournis à l'état "neuf". Il ne s'applique pas aux abrasifs pendant ou après leur utilisation. NOTE Bien que le présent document ait été spécifiquement élaboré pour satisfaire aux exigences de préparation d'ouvrages en acier, les propriétés spécifiées conviennent de manière générale pour une utilisation dans la préparation d'autres surfaces de matériaux ou d'autres composants par des techniques de décapage à l'abrasif. Ces techniques sont décrites dans l'ISO 8504‑2.

General Information

• Status: Published
• Publication Date: 17-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: 18-Jul-2025
• Due Date: 13-Jun-2026
• Completion Date: 18-Jul-2025

Relations

• Consolidates: ISO 24251-1 - Prevention of hydrogen assisted brittle fracture of high-strength steel components — Part 1: Fundamentals and measures
• Effective Date: 17-Jun-2023
• Revises: ISO 11126-1:2018 - Preparation of steel substrates before application of paints and related products — Specifications for non-metallic blast-cleaning abrasives — Part 1: General introduction and classification
• Effective Date: 17-Jun-2023

Standards Content (Sample)

International
Standard
ISO 11126-1
Third edition
Preparation of steel substrates
2025-07
before application of paints and
related products — Specifications
for non-metallic blast-cleaning
abrasives —
Part 1:
General introduction and
classification
Préparation des subjectiles d’acier avant application de peintures
et de produits assimilés — Spécifications des abrasifs non
métalliques destinés au décapage par projection —
Partie 1: Introduction générale et classification
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 Classification . 2
4.1 Abrasive type .2
4.2 Initial particle shape .2
4.3 Particle size range .2
5 Designation of abrasives . 3
6 Identification and marking. 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 11126-1:2018), which has been technically
revised.
The main changes are as follows:
— Table 1, Table 2 have been technically revised to incorporate new abrasives;
— Annex A has been removed.
A list of all parts in the ISO 11126 series can be found on the ISO website.
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.

iv
Introduction
This document is one of a number of parts of the ISO 11126 series specifying requirements for non-metallic
abrasives for blast-cleaning.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts of the ISO 11127 series
The requirements for metallic abrasives commonly used for blas
...

International
Standard
ISO 11126-1
Third edition
Preparation of steel substrates
before application of paints and
related products — Specifications
for non-metallic blast-cleaning
abrasives —
Part 1:
General introduction and
classification
Préparation des subjectiles d'acier avant application de peintures
et de produits assimilés — Spécifications pour abrasifs non
métalliques destinés à la préparation par projection —
Partie 1: Introduction générale et classification
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 Classification . 2
4.1 Abrasive type .2
4.2 Initial particle shape .2
4.3 Particle size range .2
5 Designation of abrasives . 3
6 Identification and marking. 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 11126-1:2018), which has been technically
revised.
The main changes are as follows:
— Table 1, Table 2 have been technically revised to incorporate new abrasives;
— Annex A has been removed.
A list of all parts in the ISO 11126 series can be found on the ISO website.
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.
PROOF/ÉPREUVE
iv
Introduction
This document is one of a number of parts of the ISO 11126 series specifying requirements for non-metallic
abrasives for blast-cleaning.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts of the ISO 11127 series
The requirements for metallic abrasives commonly used for blast-cleaning ar
...

2025-03-26
Style Definition
...
Formatted: Font: 14 pt, English (United Kingdom)
ISO/PRF 11126-1:2024(en)
Formatted
...
ISO/TC 35/SC 12
Formatted: zzCover large
Secretariat: BSI
Formatted: Space After: 0 pt, Adjust space between
Latin and Asian text, Adjust space between Asian text
Date: 2025-05-23
and numbers
Preparation of steel substrates before application of paints and
related products — Specifications for non-metallic blast-cleaning
abrasives —
Formatted: Font: 16 pt, French (Switzerland)
Part 1:
Formatted: Cover Title_A2, Adjust space between Latin
General introduction and classification
and Asian text, Adjust space between Asian text and
numbers
Préparation des subjectiles d'acier avant application de peintures et de produits assimilés — Spécifications
Formatted
pour abrasifs non métalliques destinés à la préparation par projection —
...
Partie 1: Introduction générale et classification
Formatted: French (France)
Formatted: French (France)
Partie 1: Introduction générale et classification
PROOF
ISO/PRF 11126-1:20242025(en)
Formatted
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.orgwww.iso.org
Formatted: English (United Kingdom)
Formatted: English (United Kingdom)
Published in Switzerland
Formatted: Font: 10 pt
Formatted: Font: 10 pt
ii
ISO/PRF 11126-1:20242025(en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
5 Designation of abrasives . 3
6 Identification and marking . 3
Bibliography . 4

Foreword . iv
Introduction . v
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Classification .2
4.1 Abrasive type .2
4.2 Initial particle shape .2
4.3 Particle size range .2
5 Designation of abrasives .3
6 Identification and marking .3
Bibliography .6

Formatted: Font: 10 pt
Formatted: Font: 10 pt
iii
ISO/PRF 11126-1:20242025(en)
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.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.htmlwww.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 11126-1:2018), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— — Table 1, Table 2Table 1, Table 2 have been technically revised to incorporate new abrasives. ;
— Annex A has been removed.
A list of all parts in the ISO 11126 series can be found on the ISO website.
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.htmlwww.iso.org/members.html.

Formatted: Font: 10 pt
Formatted: Font: 10 pt
iv
ISO/PRF 11126-1:20242025(en)
Introduction
This document is one of a number of parts of the ISO 11126 series specifying requirements for non-metallic
abrasives for blast-cleaning.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts of the ISO 11127 series
The requirements for metallic abrasives commonly used for blast-cleaning are specified in the various parts
of the ISO 11124 series. Test methods to be used to define these requirements are contained in the various
parts of the ISO 11125 series.
Abrasive blast-cleaning techniques are widely used to clean and prepare surfaces (see ISO 8504--2). During
the development of a series of International Standards dealing with the preparation of steel substrates before
application of paints and related products, it was decided there was a need for a series of International
Standards covering those blast-cleaning abrasives commonly used in preparation of steelwork.
The type of blast-cleaning abrasive used and its particle shape can significantly affect the surface appearance
and profile form of the treated surface.
ISO 8503-2 describes the assessment of the surface roughness of prepared surfaces using comparators.
Table 1Table 1 of this document identifies the type of comparator to be used with each of the blast-cleaning
abrasives considered.
Formatted: Font: 10 pt
Formatted: Font: 10 pt
v
ISO/PRF 11126-1:2025(en)
Formatted: Font: Bold
Formatted: HeaderCentered
Formatted: Section start: New page, Footer distance
Preparation of steel substrates before application of paints and from edge: 0.5 cm
related products — Specifications for non-metallic blast-cleaning Formatted: Main Title 1, None, Space After: 0 pt,
Adjust space between Latin and Asian text, Adjust space
abrasives —
between Asian text and numbers
Part 1: General introduction and classification
Part 1:
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