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Standard
ISO 9042
Second edition
Steels — Point counting method for
2024-04
statistically estimating the volume
fraction of a constituent with a
point grid
Aciers — Méthode d'estimation statistique de la fraction
volumique d'un constituant à l'aide de grilles de points
Reference number
ISO 9042:2024(en) © ISO 2024
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ISO 9042:2024(en)
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© ISO 2024 – All rights reserved
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ISO 9042:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 1
5 Principle . 2
6 Apparatus . 2
6.1 Grid.2
6.2 Means of observation . .3
7 Sample . 3
7.1 Sampling and number of samples .3
7.2 Preparation of samples .3
8 Procedure . 4
8.1 Selection of the grid .4
8.2 Magnification selection .4
8.3 Selection of the number of observed fields .4
8.4 Array of the fields .5
8.5 Examination and estimation of the fields .
...