BS EN ISO 2409:2020 – TC
$134.27
Tracked Changes. Paints and varnishes. Cross-cut test
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 48 |
This document specifies a test method for assessing the resistance of paint coatings and varnishes (including wood stains) to separation from substrates when a right-angle lattice pattern is cut into the coating, penetrating through to the substrate. The property determined by this empirical test procedure depends, among other factors, on the adhesion of the coating to either the preceding coat or the substrate. This procedure is not, however, a means of measuring adhesion.
Where a measurement of adhesion is required, see the method described in ISO 4624 .
Although the test is primarily intended for use in the laboratory, the test is also suitable for field testing.
The method described can be used either as a pass/fail test or, where circumstances are appropriate, as a six-step classification test. When applied to a multi-coat system, assessment of the resistance to separation of individual layers of the coating from each other can be made.
The test can be carried out on finished objects and/or on specially prepared test specimens.
Although the method is applicable to paint on hard (e.g. metal) and soft (e.g. wood and plaster) substrates, these different substrates need a different test procedure (see Clause 8).
The method is not suitable for coatings of total thickness greater than 250 µm or for textured coatings.
The method, when applied to coatings designed to give a rough patterned surface, will give results which will show too much variation (see also ISO 16276-2 ).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | compares BS EN ISO 2409:2020 |
| 2 | TRACKED CHANGES Text example 1 — indicates added text (in green) |
| 7 | Foreword |
| 10 | 3.15.1 General 3.25.2 Cutting tool 3.2.15.2.1 General requirements |
| 11 | 3.2.25.2.2 Single-blade cutting tools 3.2.35.2.3 Multi-blade cutting tools |
| 16 | Figure 3 — Motor-driven apparatus 3.35.3 Guiding and spacing edges 3.45.4 Viewing lens |
| 18 | 5.17.1 Substrate 5.2 Preparation and coating 5.3 Drying 5.47.2 Thickness of coating 6.18.1 General 6.1.18.1.1 Test conditions and number of tests 6.1.28.1.2 Conditioning of the test panels |
| 19 | 6.1.38.1.3 Number of cuts 6.1.48.1.4 Spacing of cuts 6.1.58.1.5 Number of determinations 6.28.2 Cutting the coating using the manual procedure |
| 20 | 6.38.3 Cutting the coating using a motor-driven tool |
| 22 | 9.111.1 Repeatability limit, r 9.211.2 Reproducibility limit, R |
| 26 | Bibliography |
| 28 | undefined |
| 30 | European foreword Endorsement notice |
| 32 | Foreword |
| 33 | 1 Scope 2 Normative references 3 Terms and definitions |
| 34 | 4 Principle 5 Apparatus 5.1 General 5.2 Cutting tool 5.2.1 General requirements 5.2.2 Single-blade cutting tools 5.2.3 Multi-blade cutting tools |
| 37 | 5.3 Guiding and spacing edges 5.4 Viewing lens |
| 38 | 6 Sampling |
| 39 | 7 Test specimen 7.1 Substrate 7.2 Thickness of coating 8 Procedure 8.1 General 8.1.1 Test conditions 8.1.2 Conditioning of the test panels 8.1.3 Number of cuts 8.1.4 Spacing of cuts |
| 40 | 8.1.5 Number of determinations 8.2 Cutting the coating using the manual procedure 8.3 Cutting the coating using a motor-driven tool 9 Evaluation and expression of results |
| 41 | 10 Designation of the test result |
| 42 | 11 Precision 11.1 Repeatability limit, r 11.2 Reproducibility limit, R 12 Test report |
| 44 | Annex A (informative) Examples of suitable procedures for removing loose paint |
| 46 | Bibliography |
