This fifth edition cancels and replaces the fourth edition (ISO 2409:2013), which has been technically revised. The main changes compared to the previous edition are as follows:

This document specifies a test method for assessing the resistance of paint coatings and varnishes (including wood stains) to separation from substrates when a right-angle lattice pattern is cut into the coating, penetrating through to the substrate.

When applied to a multi-coat system, assessment of the resistance to separation of individual layers of the coating from each other can be made. The test can be carried out on finished objects and/or on specially prepared test specimens.

Learn about the ISO 2409 cross-cut test for assessing paint and varnish coating adhesion. This standard details procedures and evaluation methods.

ISO 2409 provides a method for assessing a coating’s resistance to separation from an underlying material, including preceding coating layers. ISO 2409 is a cross-cut test for coatings with layer thicknesses up to 250 μm. This test can either be pass/fail or score the results by classification.

ISO 2409 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes. This third edition cancels and replaces the second edition (ISO 2409:1992), which has been technically revised. The main changes are: ⎯ precision data have been added.

ISO 2409:2020 specifies a test method for evaluating the resistance of paint coatings and varnishes to separation from substrates through a cross-cut test. The document outlines the apparatus, procedure, and evaluation methods, emphasizing that the test is not a direct measure of adhesion but assesses the integrity of the coating.

Jan 9, 2025 · ISO 2409 specifies a test method for assessing the adhesion of paint coatings by creating a right-angle lattice pattern in the coating. The test involves making six parallel cuts and another six perpendicular cuts, penetrating through to the substrate.

ISO 2409 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes. This fourth edition cancels and replaces the third edition ( ISO 2409:2007 ), which has been technically revised.