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ISO/TC 35/SC 9 N 2973, ISO/PWI 20567-4 Paints and varnishes -- Determination of stone-chip resistance of coatings -- Part 4: Mobile multiimpact testing on a small testing area

Scope

This document specifies a mobile method for evaluating the resistance of automotive finishes to chillediron grit projected onto the surface under test to simulate the effect of stone chipping.

Purpose

The stone-chip resistance of the body finish is an important quality characteristic. A standard procedure for testing this characteristic is the method in accordance with ISO 20567 1, which is performed with a stationary tester on a large test area. The method described here can be used in mobile form. Results from the test in accordance with this document are not comparable with results in accordance with ISO 20567 1.

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