
The ISO 1518 standard, published by the International Standards Organization (ISO), consists of the following two subsections under the main title "Paints and varnishes - Determination of scratch resistance":

The ISO 1518-1 standard defines a test method for determining the scratch resistance of a single coating or multi-layer paint, varnish or related product under certain conditions with a scratch pen loaded with a specific load. Pen penetration is to the substrate except in the case of a multi-layer system, in which case the stylus can penetrate either the substrate or an intermediate layer.
The specified method is performed as a pass/fail test by testing with a single specified load applied to the stylus to assess compliance with a particular specification. Or this method is performed as an evaluation test by applying increasing loads to the pen to determine the minimum load penetrating the coating.
The ISO 1518-2 standard, on the other hand, defines a test method for determining the scratch resistance of a single coating or top layer of a multi-layer system of a paint, varnish or related product using a pointed stylus that is loaded with an ever-increasing load. This test method is very useful in comparing the scratch resistance of different coatings. It is considered very useful in providing relative ratings for a range of coated panels that exhibit significant differences in scratch resistance.
Coatings and paints are applied to protect the substrate or hide its defects, and these functions are related to coating hardness. Hardness is an important indicator for evaluating the paint quality as well as the important performance for the mechanical strength of the paint.
The test methods described in the ISO 1518 standard are useful for comparing the scratch resistance of different coatings. These methods are effective in providing relative ratings for a range of coated panels that exhibit significant differences in scratch resistance.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides test services for the determination of the scratch resistance of paints and varnishes within the scope of ISO 1518 standard, with its trained and expert staff and advanced technological equipment.
