Tracked Changes. Paints and varnishes. Determination of scratch resistance. Variable-loading method
87.040 - Paints and varnishes
This document specifies a method for determining, using a pointed stylus loaded with a continuously increasing load, the scratch resistance of a single coating of a paint, varnish or related product, or the upper layer of a multicoat system.
This test has been found to be useful in comparing the scratch resistance of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in scratch resistance.
Neither this document nor ISO 1518-1 specifies a method using a curved stylus, which is specified in ISO 12137 . The choice between the three methods will depend on the particular practical problem.
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