Historical
BS 3900-E19:1999
Methods of test for paints. Determination of film hardness by pencil test (British Standard)
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.
CONTENT PROVIDER
British Standards Institution [bsi]
British Standards Institution [bsi]