SIST EN 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: Not Published
• Public Enquiry End Date: 02-Dec-2025
• ICS: 25.220.10 - Surface preparation
• ICS: 87.020 - Paint coating processes
• Technical Committee: IBLP - Paints and varnishes
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Sep-2026
• Due Date: 14-Nov-2026
• Ref Project: 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)

• Replaces: SIST EN 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 (ISO 11124-1:2018)
• Effective Date: 01-Nov-2026
• Referred By: SIST EN 13507:2018 - Thermal spraying - Pre-treatment of surfaces of metallic parts and components for thermal spraying
• Effective Date: 02-Sep-2026
• Referred By: SIST EN 13507:2010 - Thermal spraying - Pre-treatment of surfaces of metallic parts and components for thermal spraying
• Effective Date: 02-Sep-2026

Overview

SIST EN ISO 11124-1:2026 establishes a general introduction and classification system for metallic blast-cleaning abrasives used in the preparation of steel substrates before applying paints and related coatings. Developed by SIST in alignment with ISO standards, this document specifies the key characteristics required for the comprehensive designation of new metallic abrasives. While primarily focused on preparation of steelwork, the properties defined are also suitable for blast-cleaning other material surfaces using similar techniques.

This standard is critical for manufacturers, suppliers, and users of metallic abrasives, ensuring effective surface preparation and reliable performance in coating applications.

Key Topics

• Scope and Applicability

  • Defines only unused, new metallic blast-cleaning abrasives.
  • Does not cover re-used or processed abrasives post-application.
  • Although targeted at steel substrate preparation, guidelines are generally applicable to other materials.

• Classification Criteria

  • Abrasives are classified by material, origin, and manufacturing method.
  • Common types include chilled iron grit, cast steel shot, stainless steel variants, and cut steel wire.
  • Each type is identified with standardized abbreviations.

• Particle Shape and Size

  • Four basic initial particle shapes: shot (round), grit (angular), cylindrical (sharp-edged), and irregular (non-uniform).
  • Particle size range specified by a three-digit code indicating nominal particle size (in mm × 100), supporting precise abrasive selection.
  • Only initial particle shape is referenced, as wear during use may change characteristics.

• Designation and Marking

  • Clear product designation system combining abrasive type, shape, size, and if applicable, hardness.
  • Comprehensive labelling for packaging and sub-units, ensuring traceability for quality assurance and inventory management.

• Safety Considerations

  • Emphasizes the importance of proper handling and safety measures when using blast-cleaning abrasives and associated equipment.

Applications

• Surface Preparation for Coatings

  • Essential for preparing steel substrates before application of paints, varnishes, and protective coatings in the construction, shipbuilding, and industrial sectors.
  • Supports achieving the required surface cleanliness and profile for optimal coating adhesion and durability.

• Broader Material Compatibility

  • While developed for steel, the outlined properties and methods are suitable for blast-cleaning of other substrate materials, enhancing versatility in manufacturing and maintenance operations.

• Standardization in Procurement and Production

  • Assures consistency and quality in the supply chain by providing clear specifications for manufacturers and end-users.
  • Facilitates compliance with industry requirements and promotes international harmonization in surface preparation processes.

Related Standards

The following standards complement or are referenced within SIST EN ISO 11124-1:2026:

• ISO 8501-1: Visual assessment of surface cleanliness, providing rust grades and preparation grades for steel substrates.
• ISO 8503-2: Assessment of surface roughness profile for blast-cleaned substrates using comparators.
• ISO 8504-2: Describes techniques for abrasive blast-cleaning of substrates.
• ISO 11124 Series: Additional parts specifying requirements for various metallic abrasive types, such as chilled-iron grit and high-chromium white cast iron.
• ISO 11125 Series: Test methods for verifying properties of metallic blast-cleaning abrasives-sampling, particle size, hardness, and more.
• ISO 11126 and ISO 11127 Series: Specifications and test methods for non-metallic blast-cleaning abrasives.

---

Adhering to SIST EN ISO 11124-1:2026 ensures the correct selection, specification, and traceability of metallic blast-cleaning abrasives, supporting effective steel surface preparation and high-quality coating performance. This standard is a cornerstone for professionals engaged in surface treatment and industrial coating applications.

SLOVENSKI STANDARD
oSIST prEN ISO 11124-1:2025
01-november-2025
Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov -
Specifikacije za kovinske granulate za peskanje - 1. del: Splošni uvod in
razvrstitev (ISO/DIS 11124-1:2025)
Preparation of steel substrates before application of paints and related products -
Specifications for metallic blast-cleaning abrasives - Part 1: General introduction and
classification (ISO/DIS 11124-1:2025)
Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen -
Anforderungen an metallische Strahlmittel - Teil 1: Allgemeine Einleitung und Einteilung
(ISO/DIS 11124-1:2025)
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 (ISO/DIS 11124-1:2025)
Ta slovenski standard je istoveten z: prEN ISO 11124-1
ICS:
25.220.10 Priprava površine Surface preparation
87.020 Postopki za nanašanje Paint coating processes
barvnih premazov
oSIST prEN ISO 11124-1:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 11124-1:2025
oSIST prEN ISO 11124-1:2025
DRAFT
International
Standard
ISO/DIS 11124-1
ISO/TC 35/SC 12
Preparation of steel substrates
Secretariat: BSI
before application of paints and
Voting begins on:
related products — Specifications
2025-10-07
for metallic blast-cleaning
Voting terminates on:
abrasives —
2025-12-30
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
ICS: 25.220.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO/DIS 11124-1:2025(en)
oSIST prEN ISO 11124-1:2025
DRAFT
ISO/DIS 11124-1:2025(en)
International
Standard
ISO/DIS 11124-1
ISO/TC 35/SC 12
Preparation of steel substrates
Secretariat: BSI
before application of paints and
Voting begins on:
related products — Specifications
for metallic blast-cleaning
Voting terminates on:
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
ICS: 25.220.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 11124-1:2025(en)
ii
oSIST prEN ISO 11124-1:2025
ISO/DIS 11124-1:2025(en)
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
Annex A (informative) International Standards for metallic and non-metallic blast-cleaning
abrasives . 4
Bibliography . 6

iii
oSIST prEN ISO 11124-1:2025
ISO/DIS 11124-1:2025(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 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 on 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 the following URL:
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.
This third edition cancels and replaces the second edition (ISO 11124-1:2018), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Definition (3.6) added.
— Table 1, Table 2 and Annex A have been technically revised.
A list of all parts in the ISO 11124 series can be found on the ISO website.

iv
oSIST prEN ISO 11124-1:2025
ISO/DIS 11124-1:2025(en)
Introduction
This document is one of a number of parts of ISO 11124 specifying requirements for metallic abrasives for
blast-cleaning.
Test methods for metallic blast-cleaning abrasives are given in the various parts of ISO 11125 (see Annex A).
The requirements for non-metallic abrasives commonly used for blast-cleaning are specified in the various
parts of ISO 11126. Test methods to be used to define these requirements are contained in the various parts
of ISO 11127 (see Annex A).
Abrasive blast-cleaning techniques are widely used to clean and prepare surfaces. During work on
development of a series of International Standards dealing with the preparati
...