ISO 21949:2024

International
Standard
ISO 21949
Second edition
Coated abrasives — Plain sheets
2024-10
with holes for dust extraction
Produits abrasifs appliqués — Feuilles simples avec trous pour
extraction de la poussière
Reference number
© ISO 2024
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Published in Switzerland
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Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 1
4.1 Types and dimensions . .1
4.2 Test conditions .4
5 Designation . 4
6 Marking . . 5

iii
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,
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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 document should be noted. This document was drafted in accordance with the editorial rules of the
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