Preparation of steel substrates before application of paints and related products - Test methods for metallic blast-cleaning abrasives - Part 3: Determination of hardness (ISO 11125-3:2018)

This document specifies a test method for the determination of the Vickers hardness of metallic blast-cleaning abrasives.
This method is not recommended for the testing of particle sizes below 0,3 mm.
NOTE       Accurate testing of particles below 0,3 mm (grades S040/G050) is extremely difficult.
This is one of a number of parts of ISO 11125 dealing with the sampling and testing of metallic abrasives for blast-cleaning.
The types of metallic abrasive and requirements on each are contained in the various parts of ISO 11124.
The ISO 11124 and ISO 11125 series have been drafted as a coherent set of International Standards on metallic blast-cleaning abrasives. Information on all parts of both series is given in Annex A.

Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen - Prüfverfahren für metallische Strahlmittel - Teil 3: Bestimmung der Härte (ISO 11125-3:2018)

Préparation des subjectiles d'acier avant application de peintures et de produits assimilés - Méthodes d'essai pour abrasifs métalliques destinés à la préparation par projection - Partie 3: Détermination de la dureté (ISO 11125-3:2018)

Le présent document spécifie une méthode d'essai pour la détermination de la dureté Vickers des abrasifs métalliques destinés à la préparation par projection.
Cette méthode n'est pas recommandée pour les essais de tailles de particules inférieures à 0,3 mm.
NOTE       Il est extrêmement difficile de réaliser des essais précis sur des particules inférieures à 0,3 mm (qualités S040/G050).
Ceci est l'une des parties de l'ISO 11125 qui traitent de l'échantillonnage et des essais des abrasifs métalliques destinés à la préparation par projection.
Le type d'abrasifs métalliques et les exigences pour chacun sont donnés dans les différentes parties de l'ISO 11124.
Les séries de normes ISO 11124 et ISO 11125 constituent une série cohérente de Normes internationales sur les abrasifs métalliques destinés à la préparation par projection. L'Annexe A donne des informations sur toutes les parties des deux séries.

Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Preskusne metode za kovinske granulate za peskanje - 3. del: Ugotavljanje trdote (ISO 11125-3:2018)

Ta dokument določa preskusno metodo za ugotavljanje trdote kovinskih granulatov za peskanje po Vickersu.
Ta metoda se ne priporoča za preskušanje velikosti delcev, manjših od 0,3 mm.
OPOMBA: Natančno preskušanje delcev, manjših od 0,3 mm (razreda S040/G050), je izjemno zahtevno.
To je eden od več delov standarda ISO 11125, ki obravnavajo vzorčenje in preskušanje kovinskih granulatov
za peskanje.
Vrste kovinskega granulata in zahteve za vsak granulat so določene v različnih delih standarda ISO 11124.
Skupini standardov ISO 11124 in ISO 11125 sta bili pripravljeni kot skladen sklop mednarodnih standardov za kovinske granulate za peskanje. Informacije o vseh delih obeh skupin so podane v dodatku A.

General Information

Status
Published
Publication Date
25-Sep-2018
Withdrawal Date
30-Mar-2019
ICS
25.220.10 - Surface preparation
 
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
26-Sep-2018
Completion Date
26-Sep-2018
Ref Project
SIST EN ISO 11125-3:2018 - Preparation of steel substrates before application of paints and related products - Test methods for metallic blast-cleaning abrasives - Part 3: Determination of hardness (ISO 11125-3:2018)

Relations

Replaces
EN ISO 11125-3:1997 - Preparation of steel substrates before application of paints and related products - Test methods for metallic blast-cleaning abrasives - Part 3: Determination of hardness (ISO 11125-3:1993)
Effective Date
03-Oct-2018

Overview

EN ISO 11125-3:2018 is an international standard developed by CEN and ISO that specifies the test method for determining the Vickers hardness of metallic blast-cleaning abrasives. These abrasives are crucial for the preparation of steel substrates before the application of paints and related protective coatings. The standard ensures consistency and reliability in assessing the hardness of metallic blast-cleaning materials, which directly impacts their performance in surface preparation and coating adhesion.

The document is part of a coherent series of standards, including ISO 11124 and the ISO 11125 series, focused on the sampling, classification, and testing of metallic abrasives. It supersedes the 1997 version, incorporating updated procedures aligned with international best practices.

Key Topics

  • Scope of Testing
    The standard applies specifically to metallic blast-cleaning abrasives with particle sizes larger than 0.3 mm. It excludes testing particles below this size due to the difficulty in obtaining accurate hardness measurements for very fine particles (grades S040/G050).

  • Test Method
    The method involves measuring the Vickers hardness using a hardness tester with optical magnification (minimum ×200), applying a test force up to 10 N. For particles larger than 0.5 mm, a 9.807 N force (HV 1) is used, while particles between 0.3 mm and 0.5 mm are tested at 4.904 N (HV 0.5).
    Key procedural steps include:

    • Sampling in accordance with ISO 11125-1
    • Embedding particles in metallurgical mounting material that hardens below 140 °C to avoid tempering effects
    • Abrading and polishing the sample to expose half of the nominal particle diameter
    • Performing hardness indentations away from sample edges and defects
    • Taking multiple indentations (minimum ten) per sample and recording acceptable measurements

  • Accuracy and Calibration
    Calibration of the hardness tester is verified with comparison plates similar in hardness to the abrasives tested to ensure measurement reliability.

  • Result Expression
    The results are expressed in terms of percentage conformance with requirements detailed in ISO 11124. While calculating an arithmetic mean hardness value is optional, it is commonly used for quality control and compliance verification.

  • Limitations and Notes
    The standard cautions against converting Vickers hardness values to other hardness scales or tensile strengths without validated conversion data due to potential inaccuracies.

Applications

  • Steel Surface Preparation
    EN ISO 11125-3:2018 supports quality assurance in the blasting process that removes rust, mill scale, and old coatings from steel substrates to enhance paint adhesion.

  • Abrasive Quality Control
    Manufacturers and users of metallic blast-cleaning abrasives utilize this standard to test product hardness, ensuring abrasives meet specified durability and performance levels.

  • Compliance and Certification
    The standard aids compliance with coating system specifications that require verification of abrasive hardness to maintain consistent surface preparation standards.

  • Research and Development
    Testing according to this standard supports R&D activities focused on developing new types of blast-cleaning abrasives with optimized hardness characteristics for specific industrial applications.

Related Standards

  • ISO 11124 Series
    Specifies classifications and requirements for various types of metallic blast-cleaning abrasives, including chilled-iron grit, high-carbon cast-steel shot and grit, low-carbon cast-steel shot, and cut steel wire. EN ISO 11125-3 complements these by detailing test methods.

  • ISO 11125-1
    Describes sampling procedures for metallic abrasives, ensuring representativeness before hardness testing.

  • ISO 6507-1
    Provides the standardized Vickers hardness test method, which EN ISO 11125-3 references for conducting hardness measurements.

  • ISO 11125 Series
    A comprehensive set of standards outlining various test methods for metallic blast-cleaning abrasives, supporting the quality control of abrasive products.

Keywords: EN ISO 11125-3:2018, metallic blast-cleaning abrasives, Vickers hardness, steel substrate preparation, paint application, abrasive hardness testing, ISO 11124, surface preparation standard, blast-cleaning quality control, paint coating processes.

Frequently Asked Questions

EN ISO 11125-3:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Preparation of steel substrates before application of paints and related products - Test methods for metallic blast-cleaning abrasives - Part 3: Determination of hardness (ISO 11125-3:2018)". This standard covers: This document specifies a test method for the determination of the Vickers hardness of metallic blast-cleaning abrasives. This method is not recommended for the testing of particle sizes below 0,3 mm. NOTE Accurate testing of particles below 0,3 mm (grades S040/G050) is extremely difficult. This is one of a number of parts of ISO 11125 dealing with the sampling and testing of metallic abrasives for blast-cleaning. The types of metallic abrasive and requirements on each are contained in the various parts of ISO 11124. The ISO 11124 and ISO 11125 series have been drafted as a coherent set of International Standards on metallic blast-cleaning abrasives. Information on all parts of both series is given in Annex A.

This document specifies a test method for the determination of the Vickers hardness of metallic blast-cleaning abrasives. This method is not recommended for the testing of particle sizes below 0,3 mm. NOTE Accurate testing of particles below 0,3 mm (grades S040/G050) is extremely difficult. This is one of a number of parts of ISO 11125 dealing with the sampling and testing of metallic abrasives for blast-cleaning. The types of metallic abrasive and requirements on each are contained in the various parts of ISO 11124. The ISO 11124 and ISO 11125 series have been drafted as a coherent set of International Standards on metallic blast-cleaning abrasives. Information on all parts of both series is given in Annex A.

EN ISO 11125-3:2018 is classified under the following ICS (International Classification for Standards) categories: 25.220.10 - Surface preparation; 87.020 - Paint coating processes. The ICS classification helps identify the subject area and facilitates finding related standards.

EN ISO 11125-3:2018 has the following relationships with other standards: It is inter standard links to EN ISO 11125-3:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase EN ISO 11125-3:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-december-2018
1DGRPHãþD
SIST EN ISO 11125-3:1997
Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Preskusne
metode za kovinske granulate za peskanje - 3. del: Ugotavljanje trdote (ISO 11125-
3:2018)
Preparation of steel substrates before application of paints and related products - Test
methods for metallic blast-cleaning abrasives - Part 3: Determination of hardness (ISO
11125-3:2018)
Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen -
Prüfverfahren für metallische Strahlmittel - Teil 3: Bestimmung der Härte (ISO 11125-
3:2018)
Préparation des subjectiles d'acier avant application de peintures et de produits
assimilés - Méthodes d'essai pour abrasifs métalliques destinés à la préparation par
projection - Partie 3: Détermination de la dureté (ISO 11125-3:2018)
Ta slovenski standard je istoveten z: EN ISO 11125-3:2018
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 11125-3
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2018
EUROPÄISCHE NORM
ICS 25.220.10 Supersedes EN ISO 11125-3:1997
English Version
Preparation of steel substrates before application of paints
and related products - Test methods for metallic blast-
cleaning abrasives - Part 3: Determination of hardness
(ISO 11125-3:2018)
Préparation des subjectiles d'acier avant application de Vorbereitung von Stahloberflächen vor dem Auftragen
peintures et de produits assimilés - Méthodes d'essai von Beschichtungsstoffen - Prüfverfahren für
pour abrasifs métalliques destinés à la préparation par metallische Strahlmittel - Teil 3: Bestimmung der Härte
projection - Partie 3: Détermination de la dureté (ISO (ISO 11125-3:2018)
11125-3:2018)
This European Standard was approved by CEN on 17 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 11125-3:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11125-3:2018) 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 March 2019, and conflicting national standards shall
be withdrawn at the latest by March 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 11125-3:1997.
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 11125-3:2018 has been approved by CEN as EN ISO 11125-3:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 11125-3
Second edition
2018-08
Preparation of steel substrates before
application of paints and related
products — Test methods for metallic
blast-cleaning abrasives —
Part 3:
Determination of hardness
Préparation des subjectiles d'acier avant application de peintures et
de produits assimilés — Méthodes d'essai pour abrasifs métalliques
destinés à la préparation par projection —
Partie 3: Détermination de la dureté
Reference number
ISO 11125-3:2018(E)
©
ISO 2018
ISO 11125-3:2018(E)
© 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
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 11125-3:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Sampling . 2
6 Preparation of the sample . 2
7 Procedure. 2
8 Expression of results . 3
9 Alternative hardness scales . 3
10 Test report . 3
Annex A (informative) International Standards for metallic blast-cleaning abrasives .4
Bibliography . 5
ISO 11125-3:2018(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 Int
...

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