19/30397052 DC - BS EN ISO 2409. Paints and varnishes. Cross-cut test

19/30397052 DC

BS EN ISO 2409. Paints and varnishes. Cross-cut test

Status : Current, Draft for public comment   Published : September 2019

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HARDCOPY



This document specifies 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 property determined by this empirical test procedure depends, among other factors, on the adhesion of the coating to either the preceding coat or the substrate. This procedure is not to be regarded, however, as a means of measuring adhesion.

Where a measurement of adhesion is required, the method described in ISO 4624[1] may be used.

NOTE 1

Although the test is primarily intended for use in the laboratory, the test is also suitable for field testing.

The method described may be used either as a 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 can be made.

The test can be carried out on finished objects and/or on specially prepared test specimens.

Although the method is applicable to paint on hard (e.g. metal) and soft (e.g. wood and plaster) substrates, these different substrates need a different test procedure (see Clause 6).

The method is not suitable for coatings of total thickness greater than 250 µm or for textured coatings.

NOTE 2

The method, when applied to coatings designed to give a rough patterned surface, will give results which will show too much variation (see also ISO 16276-2[2]).




Standard Number19/30397052 DC
TitleBS EN ISO 2409. Paints and varnishes. Cross-cut test
StatusCurrent, Draft for public comment
Publication Date10 September 2019
Normative References(Required to achieve compliance to this standard)ISO 4618, ISO 15528, ISO 13076, ISO 2808, ISO 1513
Informative References(Provided for Information)ISO 4624, ISO 16276-2
International RelationshipsISO/DIS 2409
Draft Expiry Date29 October 2019
DescriptorsGrading (quality), Varnishes, Test equipment, Specimen preparation, Paints, Test specimens, Testing conditions, Cross-cut test, Coatings, Adhesion tests
ICS87.040
Title in FrenchPeintures et vernis — Essai de quadrillage
CommitteeSTI/10
PublisherBSI
FormatA4
DeliveryYes
Pages20
File Size538 KB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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