What is BS EN ISO 2409:2020 about?
This international standard details a way of testing how paint coatings resist separation when cut.
Who is BS EN ISO 2409:2020 for?
Paint and coating manufacturers and anyone conducting laboratory or field testing of paints and varnishes, including:
- Suppliers of technology solutions to aerospace, rail and defence companies
- High precision engineering companies
- Door and window suppliers
- Aluminium products suppliers
- Metal façade experts
- Architectural powder coating manufacturers
- Testing laboratories
- Metal finishing producers
Why should you use BS EN ISO 2409:2020?
It describes a test method for assessing the resistance of paint coatings to separation from substrates when a right-angle lattice pattern is cut into the coating, penetrating through to the substrate.
The method described can be used either as a quick pass/fail test or, where circumstances are appropriate, as a six-step classification test. When applied to a multi-coat system, assessment of the resistance to separation of individual layers of the coating from each other may be made.
Although BS EN ISO 2409:2020 is primarily intended for use in the laboratory, it’s also suitable for field testing. The test can be carried out on finished objects and/or on specially prepared test specimens.
Although the method applies both to paint on hard (e.g. metal) and soft (e.g. wood and plaster) substrates, these different substrates need a different test procedure.
NOTE: The method is not suitable for coatings of total thickness greater than 250 gm or for textured coatings. The method, when applied to coatings designed to give a rough patterned surface, will give results which will show too much variation.
What’s new about BS EN ISO 2409:2020?
This is a revision of the 2013 version. The major changes in BS EN ISO 2409:2020 are:
a) Clause 3 "Terms and definitions" has been added
b) Clause 4 "Principle" has been added
c) General requirements for the use of single- and multi-cutting tools have been updated
d) References to commercially available cutters have been deleted
e) Coating of the test panels has been deleted because final test specimen are assumed
f) The text has been editorially revised and the normative references updated