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BS EN ISO 22557:2020 2021

BS EN ISO 22557:2020 2021

$102.76

Paints and varnishes. Scratch test using a spring-loaded pen

Published By Publication Date Number of Pages
BSI 2021 22
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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 Ć— 50 mm).

The test can be carried out as a ā€œpass/failā€ test (test requirement I) or as a classification test (test requirement II).

PDF Catalog

PDF Pages PDF Title
2 undefined
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 ā€“ ā€œpass/failā€ test)
7.5 Varied test load method (test requirement II ā€“ 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

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BS EN ISO 22557:2020 2021
$102.76