INTERNATIONAL ISO
STANDARD 11126-1
Second edition
2018-08
Preparation of steel substrates before
application of paints and related
products — Specifications for non-
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 non métalliques
destinés à la préparation par projection —
Partie 1: Introduction générale et classification
Reference number
ISO 11126-1:2018(E)
© ISO 2018
ISO 11126-1:2018(E)
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ii © ISO 2018 – All rights reserved
ISO 11126-1:2018(E)
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 Identification and marking........................................................................................................................................................................ 3
Annex A (informative) International Standards for metallic and non-metallic blast-cleaning
abrasives........................................................................................................................................................................................................................ 4
Bibliography................................................................................................................................................................................................................................. 6
© ISO 2018 – All rights reserved iii
ISO 11126-1:2018(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
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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
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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 second edition cancels and replaces the first edition (ISO 11126-1:1993), which has been technically
revised. It also incorporates Technical Corrigenda ISO 11126-1:1993/Cor 1:1997 and ISO 11126-1:1993/
Cor 2:1997.
The main changes compared to the previous edition are as follows:
— Table 1 and Annex A have been technically revised.
A list of all parts in the ISO 11126 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
ISO 11126-1:2018(E)
Introduction
This document is one of a number of parts of ISO 11126 specifying requirements for non-metallic
abrasives for blast-cleaning.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts of ISO 11127
(see Annex A).
The requirements for metallic abrasives commonly used for blast-cleaning are specified in the various
parts of ISO 11124. Test methods to be used to define these requirements are contained in the various
parts of ISO 11125 (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 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 and profile form of the treated surface.
ISO 8503-2 describes the assessment of the surface roughness of prepared surfaces using comparators.
Table 1 of this document identifies the type of comparator to be used with each of the blast-cleaning
abrasives considered.
© ISO 2018 – All rights reserved v
INTERNATIONAL STANDARD ISO 11126-1:2018(E)
Preparation of steel substrates before application of paints
and related products — Specifications for non-metallic
blast-cleaning abrasives —
Part 1:
General introduction and classification
WARNING — Equipment, materials and abrasives used for surface preparation can be hazardous.
It is important to ensure that adequate instructions are given and that all required precautions
are exercised.
1 Scope
This document describes a classification of non-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 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.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
blast-cleaning abrasive
solid material intended to be used for abrasive blast-cleaning (3.2)
3.2
abrasive blast-cleaning
impingement of a high-kinetic-energy stream of blast-cleaning abrasive (3.1) on to the surface to be
prepared
3.3
shot
particles that are predominantly round, that have a length of less than twice the maximum particle
width and that do not have edges, broken faces or other sharp surface defects
© ISO 2018 – All rights reserved 1
ISO 11126-1:2018(E)
3.4
grit
particles that are predominantly angular, that have fractured faces and sharp edges and that are less
than half-round in shape
4 Classification
4.1 Abrasive type
Blast-cleaning abrasives shall be classified according to material, origin or manufacture. Table 1 gives
the abbreviated coding which shall be used to identify each of the types classified.
Table 1 — Commonly used non-metallic (N) blast-cleaning abrasives for steel substrate
preparation
Initial particle
Type Abbreviation shape Comparatora
(see 4.2)
Natural Olivine N/OL G G
Almandite garnet N/GA G G
Staurolite N/ST S G
Synthetic Iron slag (Calcium silicate ) N/FE1 G
Steel slag (Calcium silicate) N/FE2 G/S
Copper (Iron silicate) N/CU
G/S
refinery slag
Nickel slag (Iron silicate) N/NI1 G G
Ferronickel (Magnesium N/NI2
G/S
slag silicate)
Coal furnace (Aluminium N/CS
G
slag silicate)
Fused aluminium oxide N/FA G G
NOTE The non-metallic blast-cleaning abrasives listed in this table are those commonly used for the preparation of steel
substrates before application of paints and related products. The list is not intended to be exhaustive.
a Comparator to be used when assessing the resultant surface profile. The method for evaluating surface profile by
comparator is described in ISO 8503-2 (see Introduction).
4.2 Initial particle shape
The particle shape characterizes the geometric form of the abrasive particles. Basic forms of non-
metallic blast-cleaning abrasives are specified in Table 2, together with the symbol which shall be used
to describe each.
NOTE As the particle shape of an abrasive can change during use, only the initial particle shape is given in
the various parts of ISO 11126.
Table 2 — Initial particle shape
Designation and initial particle shape Symbol
Shot — round S
Grit — angular, irregular G
2 © ISO 2018 – All rights reserved
ISO 11126-1:2018(E)
4.3 Particle size range
Non-metallic blast-cleaning abrasives consist of mixtures of differently sized particles. These shall be
classified into size ranges.
5 Designation of abrasives
Non-metallic abrasives shall be identified by using the full product designation which consists of
the term "Abrasive" followed by "ISO 11126” and the abbreviation specified in Table 1. This shall be
followed, without spaces, by an oblique stroke and then by the symbol specified in Table 2 to indicate the
required particle shape of the abrasive as purchased. The designation shall be completed by numbers
denoting the particle size range, in millimetres, required.
EXAMPLE
Abrasive ISO 11126 N/CS/G 0,2-0,5
denotes an abrasive of the non-metallic coal furnace slag type, complying with the requirements of the
appropriate part of ISO 11126, of initial particle shape grit and particle size range 0,2 mm to 0,5 mm.
This full product designation shall be quoted on all orders.
6 Identification and marking
All supplies shall be clearly marked or identified, using the appropriate designation as specified in
Clause 5, either directly or by the accompanying delivery note.
© ISO 2018 – All rights reserved 3
ISO 11126-1:2018(E)
Annex A
(informative)
International Standards for metallic and non-metallic blast-
cleaning abrasives
A.1 Requirements and test methods for metallic blast-cleaning abrasives are
contained in ISO 11124 and ISO 11125 respectively
ISO 11124 consists of the following parts, under the general title:
Preparation of steel substrates before application of paints and related products — Specification for
metallic blast-cleaning abrasives
— Part 1: General introduction and classification
— Part 2: Chilled-iron grit
— Part 3: High-carbon cast-steel shot and grit
— Part 4: Low-carbon cast-steel shot
— Part 5: Cut steel wire1)
ISO 11125 consists of the following parts, under the general title:
Preparation of steel substrates before application of paints and related products — Test methods for
metallic blast-cleaning abrasives
— Part 1: Sampling
— Part 2: Determination of particle size distribution
— Part 3: Determination of hardness
— Part 4: Determination of apparent density
— Part 5: Determination of percentage defective particles and of microstructure
— Part 6: Determination of foreign matter
— Part 7: Determination of moisture
— Part 9: Wear testing and performance2)
A.2 Requirements and test methods for non-metallic blast-cleaning abrasives are
contained in ISO 11126 and ISO 11127 respectively
ISO 11126 consists of the following parts, under the general title:
1) Under preparation. (Stage at the time of publication ISO/DIS 11124-5:2018.)
2) Under preparation. (Stage at the time of publication ISO/NP 11125-9:2018.)
4 © ISO 2018 – All rights reserved
ISO 11126-1:2018(E)
Preparation of steel substrates before application of paints and related products — Specifications for non-
metallic blast-cleaning abrasives
— Part 1: General introduction and classification
— Part 3: Copper refinery slag
— Part 4: Coal furnace slag
— Part 5: Nickel slag
— Part 6: Iron and steel slags
— Part 7: Fused aluminium oxide
— Part 8: Olivine
— Part 9: Staurolite
— Part 10: Almandite garnet
ISO 11127 consists of the following parts, under the general title:
Preparation of steel substrates before application of paints and related products — Test methods for non-
metallic blast-cleaning abrasives
— Part 1: Sampling
— Part 2: Determination of particle size distribution
— Part 3: Determination of apparent density
— Part 4: Assessment of hardness by a glass slide test
— Part 5: Determination of moisture
— Part 6: Determination of water-soluble contaminants by conductivity measurement
— Part 7: Determination of water-soluble chlorides
© ISO 2018 – All rights reserved 5
ISO 11126-1:2018(E)
Bibliography
[1] ISO 8501-1:2007, Preparation of steel substrates before application of paints and related products —
Visual assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated
steel substrates and of steel substrates after overall removal of previous coatings
[2] ISO 8503-2, Preparation of steel substrates before application of paints and related products —
Surface roughness characteristics of blast-cleaned steel substrates — Part 2: Method for the grading
of surface profile of abrasive blast-cleaned steel — Comparator procedure
[3] ISO 8504-2, Preparation of steel substrates before application of paints and related products —
Surface preparation methods — Part 2: Abrasive blast-cleaning
[4] ISO 11124 (all parts), Preparation of steel substrates before application of paints and related
products — Specifications for metallic blast-cleaning abrasives
[5] ISO 11125 (all parts), Preparation of steel substrates before application of paints and related
products — Test methods for metallic blast-cleaning abrasives
[6] ISO 11127 (all parts), Preparation of steel substrates before application of paints and related
products — Test methods for non-metallic blast-cleaning abrasives
6 © ISO 2018 – All rights reserved
ISO 11126-1:2018(E)
ICS 25.220.10
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