EN ISO 11126-6:2018

Preparation of steel substrates before application of paints and related products - Specifications for non-metallic blast-cleaning abrasives - Part 6: Iron and steel slags (ISO 11126-6:2018)

This document specifies requirements for iron and steel slag abrasives, as supplied for blast-cleaning processes. It specifies ranges of particle sizes and values for apparent density, Mohs hardness, moisture content, conductivity of aqueous extract and water-soluble chlorides.
The requirements specified in this document apply to abrasives supplied in the "new" condition only. They do not apply to abrasives either during or after use.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts of ISO 11127.
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.

Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen - Anforderungen an nichtmetallische Strahlmittel - Teil 6: Strahlmittel aus Roheisen- und Stahlwerksschlacke (ISO 11126-6:2018)

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 6: Scories de four de métallurgie (ISO 11126-6:2018)

Le présent document spécifie les exigences relatives aux abrasifs en scories de métallurgie tels que commercialisés pour les processus de décapage à l'abrasif. Il spécifie les plages granulométriques et les valeurs de la masse volumique apparente, la dureté selon l'échelle de Mohs, la teneur en humidité, la conductivité de l'extrait aqueux et la teneur en chlorures solubles dans l'eau.
Les exigences spécifiées dans le présent document s'appliquent seulement aux abrasifs fournis à l'état « neuf ». Elles ne s'appliquent pas aux abrasifs pendant ou après utilisation.
Des méthodes d'essai des abrasifs non métalliques pour décapage par projection sont données dans les différentes parties de l'ISO 11127.
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.

Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Specifikacije za nekovinske granulate za peskanje - 6. del: Železova in jeklova žlindra (ISO 11126-6:2018)

Ta dokument določa zahteve za granulate v obliki železove in jeklove žlindre, dobavljene za peskanje. Določa razpon velikosti delcev in vrednosti za navidezno gostoto, Mohsovo trdoto, vsebnost vlage, prevodnost vodnega ekstrakta in vodotopnih kloridov.
Zahteve v tem dokumentu se uporabljajo samo za granulate, ki so dobavljeni »novi«.
Ne uporabljajo se za granulate med njihovo uporabo ali po njej.
Preskusne metode za nekovinske granulate za peskanje so podane v različnih delih standarda ISO 11127.
OPOMBA: Čeprav je bil ta dokument pripravljen posebej za izpolnjevanje zahtev za pripravo jekla, so opredeljene lastnosti na splošno ustrezne za uporabo pri obdelavi površin drugih materialov ali sestavnih delov s tehnikami peskanja. Te tehnike so opisane v standardu ISO 8504-2.

General Information

• Status: Published
• Publication Date: 02-Oct-2018
• Withdrawal Date: 29-Apr-2019
• ICS: 25.220.10 - Surface preparation
• ICS: 87.020 - Paint coating processes
• Technical Committee: CEN/TC 139 - Paints and varnishes
• Drafting Committee: CEN/TC 139 - Paints and varnishes
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 03-Oct-2018
• Completion Date: 03-Oct-2018
• Ref Project: SIST EN ISO 11126-6:2018 - Preparation of steel substrates before application of paints and related products - Specifications for non-metallic blast-cleaning abrasives - Part 6: Iron and steel slags (ISO 11126-6:2018)

Relations

• Replaces: EN ISO 11126-6:1997 - Preparation of steel substrates before application of paints and related products - Specifications for non-metallic blast-cleaning abrasives - Part 6: Iron furnace slag (ISO 11126-6:1993)
• Effective Date: 10-Oct-2018

Overview

EN ISO 11126-6:2018 is an international standard specifying the requirements for non-metallic blast-cleaning abrasives produced from iron and steel slags. Part of the EN ISO 11126 series, this document focuses on the preparation of steel substrates prior to the application of paints and related coatings. It defines critical parameters such as particle size distribution, apparent density, Mohs hardness, moisture content, conductivity of aqueous extracts, and water-soluble chlorides for new (unused) slag abrasives intended for blast-cleaning operations.

This standard ensures that iron and steel slag abrasives meet consistent quality and safety criteria essential for effective surface preparation. It is applicable primarily to steel substrate preparation but can also be relevant to other materials prepared by blast-cleaning technology described in ISO 8504-2.

Key Topics

• Scope and Application
  Specifies requirements for blast-cleaning abrasives made from iron and steel slags in their new condition. Does not cover abrasives in use or after use.

• Material Composition
  Abrasives are vitreous amorphous materials mainly composed of calcium silicate with bonded silica content. Free crystalline silica must not exceed 1% mass fraction to ensure safety and performance.

• Particle Size and Shape
  Defines acceptable particle size ranges and shapes (grit or shot), catering to different surface preparation needs. Particle size distribution limits are specified to optimize cleaning efficiency and consistency.

• Physical and Chemical Properties

  • Apparent density: 2.6 to 3.9 kg/dm³
  • Mohs hardness: minimum 6 for durability and effective abrasive action
  • Moisture content: maximum 0.2% to maintain optimal blasting conditions
  • Conductivity of aqueous extract: limits impurities to a maximum of 250 µS/cm
  • Water-soluble chlorides: maximum 0.002% to reduce corrosion risk after blasting

• Designation and Identification
  Abrasives are designated by a standard coding system:
  Example – Abrasive ISO 11126 N/FE1/G 0,2-1, indicating non-metallic iron slag in grit form with a 0.2 to 1 mm particle range.

• Test Methods
  Testing and sampling methods for the abrasives referenced are covered in ISO 11127 parts 1 through 7. These include sampling, particle size distribution, density, hardness, moisture, conductivity, and chloride content.

• Safety Note
  Using blast-cleaning abrasives requires adequate safety measures and instructions due to the potential hazards of equipment and materials involved.

Applications

• Steel Surface Preparation
  Ensures optimal cleaning and surface profile development on steel prior to painting and coating applications, critical for achieving durable protective coatings.

• Blast-Cleaning Processes
  Suitable for use in various blast-cleaning equipment and processes, iron and steel slag abrasives are effective alternatives to metallic abrasives, offering controlled abrasive properties.

• Other Material Surfaces
  While developed for steel substrates, the properties specified also make these abrasives applicable to preparing other surface materials for coating, enhancing versatility.

• Corrosion Control
  Control of moisture and salts ensures minimized risk of corrosion post-blasting, improving the longevity of coatings applied thereafter.

Related Standards

• ISO 11126 Series
  A comprehensive set of parts addressing specifications for various non-metallic blast-cleaning abrasives:

  • Part 1: General principles and sampling
  • Part 2: Particle size distribution
  • Part 3: Apparent density measurement
  • Part 4: Hardness assessment
  • Part 5: Moisture determination
  • Part 6: Conductivity and contaminants testing
  • Part 7: Water-soluble chlorides determination

• ISO 8504-2
  Describes blast-cleaning techniques relevant for substrate preparation across materials and industries.

Practical Value

Compliance with EN ISO 11126-6:2018 guarantees the use of high-quality iron and steel slag abrasives with defined physical and chemical properties, enabling reliable, efficient surface preparation for protective coatings. The standard helps manufacturers, suppliers, and applicators maintain consistency and safety in blasting operations, ultimately improving coating performance and durability. Adherence also facilitates international trade by aligning product specifications across CEN member countries, ensuring interoperable quality benchmarks.

For professionals in surface treatment, coatings application, and industrial cleaning, this standard is a critical reference to select and evaluate blast-cleaning abrasives that meet technical and environmental requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2018
1DGRPHãþD
SIST EN ISO 11126-6:1997
Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov -
Specifikacije za nekovinske granulate za peskanje - 6. del: Železova in jeklova
žlindra (ISO 11126-6:2018)
Preparation of steel substrates before application of paints and related products -
Specifications for non-metallic blast-cleaning abrasives - Part 6: Iron and steel slags (ISO
11126-6:2018)
Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen -
Anforderungen an nichtmetallische Strahlmittel - Teil 6: Strahlmittel aus Roheisen- und
Stahlwerksschlacke (ISO 11126-6:2018)
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 6: Scories de four de métallurgie (ISO 11126-6:2018)
Ta slovenski standard je istoveten z: EN ISO 11126-6:2018
ICS:
25.220.10 Priprava površine Surface preparation
87.020 Postopki za nanašanje Paint coating processes
barvnih premazov
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11126-6
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 25.220.10 Supersedes EN ISO 11126-6:1997
English Version
Preparation of steel substrates before application of paints
and related products - Specifications for non-metallic
blast-cleaning abrasives - Part 6: Iron and steel slags (ISO
11126-6:2018)
Préparation des subjectiles d'acier avant application de Vorbereitung von Stahloberflächen vor dem Auftragen
peintures et de produits assimilés - Spécifications pour von Beschichtungsstoffen - Anforderungen an
abrasifs non métalliques destinés à la préparation par nichtmetallische Strahlmittel - Teil 6: Strahlmittel aus
projection - Partie 6: Scories de four de métallurgie Roheisen- und Stahlwerksschlacke (ISO 11126-6:2018)
(ISO 11126-6:2018)
This European Standard was approved by CEN on 12 August 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11126-6:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11126-6:2018) has been prepared by Technical Committee ISO/TC 35 "Paints
and varnishes" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 11126-6:1997.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11126-6:2018 has been approved by CEN as EN ISO 11126-6:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 11126-6
Second edition
2018-08
Preparation of steel substrates before
application of paints and related
products — Specifications for non-
metallic blast-cleaning abrasives —
Part 6:
Iron and steel slags
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 6: Scories de four de métallurgie
Reference number
ISO 11126-6:2018(E)
©
ISO 2018
ISO 11126-6:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
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
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Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 11126-6:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2  Normative references . 1
3  Terms and definitions . 2
4  Designation of abrasives . 2
5  Sampling . 3
6 Requirements . 3
6.1 General requirements . 3
6.2 Particular requirements . 3
7  Identification and marking. 4
8  Information to be supplied by the manufacturer or supplier . 4
Bibliography . 5
ISO 11126-6:2018(E)
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
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