BS ISO 22557:2019
$102.76
Paints and varnishes. Scratch test using a spring-loaded pen
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 22 |
This document specifies a method for determining the resistance of a coating to scratches introduced by a usually hand-held loaded stylus.
The test can be carried out using a point stylus (method A) or using a disc stylus (method B).
Both methods are generally applicable and can be used in the field as well as on curved surfaces. Method A can also be applied on small test specimens (minimum dimensions 30 mm × 50 mm).
The test can be carried out as a “pass/fail” test (test requirement I) or as a classification test (test requirement II).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Principle 5 Apparatus |
| 12 | 6 Test specimens 6.1 General requirements 6.2 Film thickness 6.3 Conditioning |
| 13 | 7 Procedure 7.1 Agreements 7.2 Test conditions 7.3 General test procedure 7.4 Constant test load method (test requirement I – “pass/fail” test) 7.5 Varied test load method (test requirement II – classification test) |
| 14 | 7.6 Assessment of the damage |
| 15 | 8 Precision 8.1 General 8.2 Repeatability limit, r 8.3 Reproducibility limit, R 9 Test report 9.1 Detailed form |
| 16 | 9.2 Short form |
| 17 | Annex A (informative) Details on the interlaboratory comparison for the estimation precision |
| 21 | Bibliography |
