ISO 11124-7:2025
(Main)Preparation of steel substrates before application of paints and related products — Specifications for metallic blast-cleaning abrasives — Part 7: High chromium white cast iron grit
Preparation of steel substrates before application of paints and related products — Specifications for metallic blast-cleaning abrasives — Part 7: High chromium white cast iron grit
This document specifies requirements for high chromium white cast iron grit, as supplied for blast-cleaning processes. It specifies ranges of particle sizes, together with corresponding grade designations. Values are specified for hardness, density, defect/structural requirements, metallographic structure and chemical composition. 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. High chromium white cast iron grits are used in both static and site blasting equipment. They are most often selected where there is a possibility for the recovery and re-use of the abrasive. NOTE 1 Although this document has been developed for preparation of steelwork, these materials are predominantly used for non-ferrous substrates. The properties specified will generally be appropriate for use when preparing other material surfaces, or components, using blast-cleaning techniques, and can be used for applications where no subsequent coating is applied. NOTE 2 Whenever dissimilar metals are used together, galvanic corrosion can occur.
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General Information
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Standards Content (Sample)
International
Standard
ISO 11124-7
First edition
Preparation of steel substrates
2025-06
before application of paints and
related products — Specifications
for metallic blast-cleaning
abrasives —
Part 7:
High chromium white cast iron grit
Reference number
© ISO 2025
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Designation of abrasives . 3
5 Sampling . 3
6 Requirements for high chromium white cast iron grit . 3
7 Package identification and lot traceability . 4
8 Information to be provided by the manufacturer or supplier . 4
iii
Foreword
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This document was prepared by Technical Committee ISO/TC 35 Paints and varnishes, Subcommittee SC12,
Preparation of steel substrates before application of paints and related products.
A list of all parts in the ISO 11124 series 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
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iv
International Standard ISO 11124-7:2025(en)
Preparation of steel substrates before application of paints
and related products — Specifications for metallic blast-
cleaning abrasives —
Part 7:
High chromium white cast iron grit
1 Scope
This document specifies requirements for high chromium white cast iron grit, as supplied for blast-cleaning
processes. It specifies ranges of particle sizes, together with corresponding grade designations. Values are
specified for hardness, density, defect/structural requirements, metallographic structure and chemical
composition.
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.
High chromium white cast iron grits are used in both static and site blasting equipment. They are most often
selected where there is a possibility for the recovery and re-use of the abrasive.
NOTE 1 Although this document has been developed for preparation of steelwork, these materials are
predominantly used for non-ferrous substrates. The properties specified will generally be appropriate for use when
preparing other material surfaces, or components, using blast-cleaning techniques, and can be used for applications
where no subsequent coating is applied.
NOTE 2 Whenever dissimilar metals are used together, galvanic corrosion can occur.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 439, Steel and cast iron — Determination of silicon content — Gravimetric method
ISO 629, Steel and cast iron — Determination of manganese content — Spectrophotometric method
ISO 9556, Steel and iron — Determination of total carbon content — Infrared absorption method after
combustion in an induction furnace
ISO 10138, Steel and iron — Determination of chromium content — Flame atomic absorption spectrometric method
ISO 11125-1, Preparation of steel substrates before appl
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