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ISO 15184:2020
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ISO 15184:2020 Paints and varnishes - Determination of film hardness by pencil test
standard by International Organization for Standardization, 01/01/2020
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Full Description
ISO 15184:2020 specifies a method for determining the film hardness by pushing pencils of known hardness over the film.
The test can be performed on a single coating of a paint, varnish or related product, or on the upper layer of a multi-coat system.
This rapid test has not been found to be useful in comparing the pencil hardness of different coatings. It is more useful in providing relative ratings for a series of coated panels exhibiting significant differences in pencil hardness.
The method is applicable only to smooth surfaces.