Historical
ISO 15184:1998
Paints and varnishes - Determination of film hardness by pencil test
This International Standard is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products.
It 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 multicoat system.
This rapid, inexpensive test has 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.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]