ISO 11124-1:2026

• Abstract:

  This document describes a classification of 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 the preparation of steelwork, the properties specified are generally appropriate when preparing other material surfaces, or components, using blast-cleaning techniques. These techniques are described in ISO 8504-2 [7].

• Status: Published
• Publication Date: 13-Aug-2026
• 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/WG 4 - Blast-cleaning abrasives
• Current Stage: 6060 - International Standard published
• Start Date: 14-Aug-2026
• Due Date: 27-Jan-2027
• Completion Date: 14-Aug-2026

• Consolidates: EN ISO 11124-1:2026 - Preparation of steel substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives - Part 1: General introduction and classification (ISO 11124-1:2026)
• Effective Date: 12-Feb-2026
• Revises: ISO 11124-1:2018 - Preparation of steel substrates before application of paints and related products — Specifications for metallic blast-cleaning abrasives — Part 1: General introduction and classification
• Effective Date: 01-Feb-2025

ISO 11124-1:2026 is an International Standard from ISO for metallic blast-cleaning abrasives used to prepare steel substrates before paints and related products are applied. ISO 11124-1:2026 classifies these abrasives, sets the characteristics needed for their full designation, and defines how they are identified on orders and packages. It is intended for suppliers, purchasers, and users who need a common specification for new, unused abrasive material.

What does ISO 11124-1:2026 specify?

ISO 11124-1:2026 specifies a classification system for metallic blast-cleaning abrasives used in preparation of steel before coating. It covers abrasives in the new or unused condition only, so it is about what is purchased and supplied, not material after service.

The document is organized into scope, terms and definitions, classification, designation, and package identification and lot traceability, followed by a bibliography. The scope also notes that the properties are generally suitable for other surfaces prepared by blast-cleaning, with the technique described in ISO 8504-2.

What are the key requirements of ISO 11124-1:2026?

ISO 11124-1:2026 requires a clear classification, a full product designation, and marked packaging so the abrasive can be specified and traced in practice. The main technical points are in Clause 4 to Clause 6.

• Clause 4.1 classifies abrasives by material, origin, or manufacture. Table 1 gives the abbreviated codes for the commonly used metallic abrasives. In practice, this gives buyers and suppliers a shared code for the abrasive family being ordered.

• Clause 4.1 links abrasive type to the comparator used for surface profile assessment. Table 1 identifies the comparator type associated with each abrasive family. This matters when the blast-cleaned surface profile is checked against the comparator method.

• Clause 4.2 classifies the initial particle shape. The standard uses the symbols for shot, grit, cylindrical, and irregular shapes. In practice, this tells users what shape they are buying, which affects the resulting surface appearance and profile.

• Clause 4.3 classifies the particle size range. A three-digit number represents the grade or nominal particle size in millimetres multiplied by 100. This makes size selection and ordering precise enough for procurement and quality control.

• Clause 5 defines the full product designation. The designation uses the term “Abrasive ISO 11124”, the Table 1 abbreviation, the Table 2 particle-shape symbol, and the grade number; if applicable, the Vickers hardness (HV) range is also stated. In practice, this gives one complete order description that reduces ambiguity.

• Clause 5 requires the full designation on all orders. The examples show how the material code, shape, grade, and hardness range are combined. This is important because the purchase order becomes the controlling specification for supply.

• Clause 6 covers package identification and lot traceability. The unit of sale is to be labelled with the full product coding, including hardness range if applicable, and sub-units are to carry the particle-shape and grade codes. Additional traceability marking is recommended at pallet, drum, or box level, which helps with stock control and investigation of nonconforming material.

What terms does ISO 11124-1:2026 define?

ISO 11124-1:2026 defines the basic language used to describe metallic blast-cleaning abrasives.

• Blast-cleaning abrasive - a solid material intended for abrasive blast-cleaning.
• Abrasive blast-cleaning - the impact of a high-kinetic-energy stream of blast-cleaning abrasive onto the surface being prepared.
• Shot - predominantly round particles with no edges, broken faces, or other sharp surface defects.
• Grit - predominantly angular particles with fractured faces and sharp edges.
• Cylindrical - sharp-edged particles with a 1:1 diameter-to-length ratio and faces cut approximately at right angles to the centreline.
• Irregular - predominantly non-uniform particles with no edges, broken faces, or other sharp surface defects.

Who uses ISO 11124-1:2026?

ISO 11124-1:2026 is used by abrasive manufacturers, distributors, coating contractors, steel fabricators, and procurement or quality teams that specify blast-cleaning media. It is especially relevant to people preparing steel substrates before painting or applying related products, because the abrasive type, shape, and size directly affect the prepared surface. Inspection and quality staff also use it when checking whether supplied abrasive matches the ordered designation and packaging information.

What changed in ISO 11124-1:2026 from the previous edition?

ISO 11124-1:2026 cancels and replaces ISO 11124-1:2018. The main changes stated in the standard are:

• definition 3.6 was added;
• Table 1 and Table 2 were technically revised;
• Annex A was removed and references were added to the bibliography.

Which standards are used with ISO 11124-1:2026?

ISO 11124-1:2026 is used with a family of related standards for abrasives, surface condition, and surface-preparation methods.

• ISO 11124 (all parts) - the series of specifications for metallic blast-cleaning abrasives.
• ISO 11125 (all parts) - test methods for metallic blast-cleaning abrasives.
• ISO 11126 (all parts) - specifications for non-metallic blast-cleaning abrasives.
• ISO 11127 (all parts) - test methods for non-metallic blast-cleaning abrasives.
• ISO 8501-1 - visual assessment of steel surface cleanliness and preparation grades.
• ISO 8503-2 - comparator procedure for grading the surface profile of abrasive blast-cleaned steel.
• ISO 8504-2 - abrasive blast-cleaning methods.

What does the ISO 11124-1:2026 document contain?

ISO 11124-1:2026 contains a classification table for metallic abrasives, a table of initial particle shapes, and guidance for assigning a complete product designation. It also includes two designation examples that show how material type, shape, grade, and hardness range are combined for ordering and labelling.

The document gives package identification and lot traceability guidance for commercial units and sub-units. Its front matter includes a safety warning about hazards from surface-preparation equipment, materials, and abrasives, and a short bibliography links this part to related ISO standards used for testing, surface assessment, and blast-cleaning practice.

International
Standard
ISO 11124-1
Third edition
Preparation of steel substrates
2026-08
before application of paints and
related products — Specifications
for 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
métalliques destinés à la préparation par projection —
Partie 1: Introduction générale et classification
Reference number
© ISO 2026
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 .3
5 Designation of abrasives . 3
6 Package identification and lot traceability . 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
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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
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specific terms and expressions related to conformity assessment, as well as information about ISO's
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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 11124-1:2018), which has been technically
revised.
The main changes are as follows:
— definition (3.6) added;
— Table 1 and Table 2 have been technically revised;
— Annex A has been removed and references added to bibliography.
[1]
A list of all parts in ISO 11124 (all parts) 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
[1]
This document is one of a number of parts of ISO 11124 (all parts) specifying requirements for metallic
abrasives for blast-cleaning.
[2]
Test methods for metallic blast-cleaning abrasives are given in the various parts of ISO 11125 (all parts) .
The requirements for non-metallic abrasives commonly used for blast-cleaning are specified in the various
[3]
parts of ISO 11126 (all parts) . Test methods to be used to define these requirements are contained in the
[4]
various parts of ISO 11127 (all parts) .
Abrasive blast-cleaning techniques are widely used to clean and prepare surfaces. 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 that a need existed 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
[5]
and profile form of the treated surface. ISO 8501-1 provides informative photographic examples of the
change in appearance imparted to steel when blast-cleaned with different abrasive types.
[6]
ISO 8503-2 describes the assessment of the surface roug
...

Norme
internationale
ISO 11124-1
Troisième édition
Préparation des subjectiles d'acier
2026-08
avant application de peintures et de
produits assimilés — Spécifications
pour abrasifs métalliques destinés à
la préparation par projection —
Partie 1:
Introduction générale et
classification
Preparation of steel substrates before application of paints and
related products — Specifications for metallic blast-cleaning
abrasives —
Part 1: General introduction and classification
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2026
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Classification . 2
4.1 Type d'abrasif.2
4.2 Forme initiale des particules .3
4.3 Plage granulométrique .3
5 Désignation des abrasifs . 3
6 Identification de l'emballage et traçabilité du lot . 3
Bibliographie . 5

iii
Avant-propos
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de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
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commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 35, Peintures et vernis, sous-comité SC 12,
Préparation des subjectiles d'acier avant application de peintures et de produits assimilés, en collaboration
avec le comité technique CEN/TC 139, Peintures et vernis, du Comité européen de normalisation (CEN)
conformément à l'Accord de coopération technique entre l'ISO et le CEN (Accord de Vienne).
Cette troisième édition annule et remplace la deuxième édition (ISO 11124-1:2018) qui a fait l'objet d'une
révision technique.
Les principales modifications sont les suivantes:
— ajout de la définition (3.6);
— les Tableau 1 et Tableau 2 ont fait l'objet d'une révision technique;
— l'Annexe A a été supprimée et des références ont été ajoutées dans la Bibliographie.
Une liste de toutes les parties de la série ISO 11124 se trouve sur le site web de l'ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.

iv
Introduction
[1]
Le présent document constitue l'une des parties de la série ISO 11124 qui spécifie les exigences relatives
aux abrasifs métalliques destinés à la préparation par projection.
Les méthodes d'essai relatives aux abrasifs métalliques destinés à la préparation par projection sont données
[2]
dans les différentes parties de la série ISO 11125 .
Les exigences relatives aux abrasifs non métalliques couramment utilisés pour la préparation par projection
[3]
sont spécifiées dans les différentes parties de la série ISO 11126. Les méthodes d'essai servant à déterminer
[4]
ces exigences sont données dans les différentes parties de la série ISO 11127 .
Les techniques de préparation par projection d'abrasif sont largement utilisées pour nettoyer et préparer
des surfaces. Lors de l'élaboration d'une série de Normes internationales sur la préparation des subjectiles
d'acier avant application de peintures et produits assimilés, il a été constaté qu'il était nécessaire d'élaborer
une série de Normes internationales couvrant les abrasifs destinés à la préparation par projection
couramment utilisés dans la préparation des ouvrages en acier.
Le type d'abrasif utilisé et la forme des particules peuvent influer sensiblement sur l'aspect de surface et
[5]
le profil de la surface traitée. L'ISO 8501-1 fournit des exemples de clichés représentatifs du changement
d'aspect communiqué à l'acier décapé avec différents types d'abrasif.
[6]
L'ISO 8503-2 décrit l'évaluation de la rugosité de surface des subjectiles préparés, à l'aide de comparateurs.
Le Tableau 1 du présent document identifie le type de comparateur à utiliser avec chacun des abrasifs
destinés à la préparation par projection considérés.

v
Norme internationale ISO 11124-1:2026(fr)
Préparation des subjectiles d'acier avant application
de peintures et de produits assimilés — Spécifications
pour abrasifs métalliques de
...