ISO15184 Pencil Hardness Tester “Determination of film hardness by pencil test”

ISO15184 Pencil Hardness Tester “Determination of film hardness by pencil test”

범위

This document 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.

pencil hardness

Resistance of the surface of a paint film to marking, or the formation of some other defect, as a result of the action of a pencil, with a lead of specified dimensions, shape and hardness, which is pushed across the surface.

연필 경도 시험기 GA-6002

The purpose of scratch hardness tests is to determine the resistance of coating materials or lacquers to scratch effects on the surface. This test is of particular value for furniture or vehicle lac- quers, but is also a useful aid in the development of synthetic resins or other film forming materials.

일반적으로, scratch hardness is measured by moving a sharp object under a known pressure over the test surface.

The result may either be the value of the pressure required to scratch through the test material if a scratching tool of constant hardness is used, or the hardness of the scratching tool is varied while constant pressure is applied.

ISO15184 Pencil Hardness Tester “Determination of film hardness by pencil test”

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