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ISO 4624

Paints and varnishes — Pull-off test for adhesion

General information

60.00     Apr 27, 2023


ISO/TC 35/SC 9

International Standard



ISO 4624:2016 specifies three methods (i.e. one dolly or two dollies on a painted panel and two dollies, one as painted substrate) for determining the adhesion by carrying out a pull-off test on a single coating or a multi-coat system of paint, varnish or related product.
These test methods have been found useful in comparing the adhesion behaviour of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion.
The test may be applied using a wide range of substrates. Different procedures are given according to whether the substrate is deformable, for example thin metal, plastics and wood, or rigid, for example thick concrete and metal plates. To avoid distortion of the substrate during the tensile test, it is common to use a sandwich construction. For example, for special purposes, the coating may be applied directly to the face of a test dolly.

Life cycle


ISO 4624:2016


ISO 4624
60.00 Standard under publication
Apr 27, 2023

National adoptions

Paints and varnishes - Pull-off test for adhesion (ISO/FDIS 4624:2023)

50.60 Close of voting. Proof returned by secretariat

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