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ISO 22557:2019

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

Jul 16, 2019

General information

90.60     Dec 3, 2024

ISO

ISO/TC 35/SC 9

International Standard

87.040  

English   French  

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Scope

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).

Life cycle

NOW

PUBLISHED
ISO 22557:2019
90.60 Close of review
Dec 3, 2024