ISO 11124-1:2026

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
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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
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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
...