ISO 4624:2016

Paints and varnishes — Pull-off test for adhesion

Publication date:   Feb 25, 2016

General information

90.92 Standard to be revised   Jul 5, 2021


ISO/TC 35/SC 9 General test methods for paints and varnishes

International Standard

87.040   Paints and varnishes



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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 4624:2002


ISO 4624:2016
90.92 Standard to be revised
Jul 5, 2021


ISO/DIS 4624