ISO 8503-3:2012
Preparation of steel substrates before application of paints and related products — Surface roughness characteristics of blast-cleaned steel substrates — Part 3: Method for the calibration of ISO surface profile comparators and for the determination of su
ISO 8503-3:2012 specifies the optical microscope and describes the procedure for calibrating ISO surface profile comparators conforming to the requirements of ISO 8503‑1.
It is also applicable to the determination of the surface profile, within the range of 20 μm to 200 μm, of essentially planar blast-cleaned steel. The determination can be carried out on a representative section of the blast-cleaned substrate or, if direct observation of the surface is not feasible, on a replica of the surface.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test surfaces
6.1 ISO surface profile comparator
6.2 Blast-cleaned steel substrates/replica
7 Procedure for measurement of maximum peak-to-valley height
8 Calculation and expression of results
9 Test report
Annex A (normative) Determination of backlash (play) in the microscope adjustment mechanism
Annex B (normative) Test report for the calibration of ISO surface profile comparators and for the determination of surface profiles
Annex C (normative) Form for recording surface profile measurements made in accordance with this part of ISO 8503
Annex D (informative) Guidance notes for calibrating ISO surface profile comparators using a focusing microscope
Annex E (informative) Guidance notes for the preparation and measurement of replicas
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test surfaces
6.1 ISO surface profile comparator
6.2 Blast-cleaned steel substrates/replica
7 Procedure for measurement of maximum peak-to-valley height
8 Calculation and expression of results
9 Test report
Annex A (normative) Determination of backlash (play) in the microscope adjustment mechanism
Annex B (normative) Test report for the calibration of ISO surface profile comparators and for the determination of surface profiles
Annex C (normative) Form for recording surface profile measurements made in accordance with this part of ISO 8503
Annex D (informative) Guidance notes for calibrating ISO surface profile comparators using a focusing microscope
Annex E (informative) Guidance notes for the preparation and measurement of replicas
Bibliography