Mar is described as a physical damage that usually occurs within a few micrometers of the surface of the topcoats; these damages are usually the cause of the changes in appearance observed on the paint coatings.
Mar is therefore one of the major concerns of the automotive coating industry.
Some causes of mar include keys, fingernails, branches, blowing sand. The car wash is however believed to be the main cause as it is one of the few periodic activities for many car owners.
Download the full application report, which will demonstrate mar behaviour analysis methodology using the Anton Paar Nanoscratch Tester.
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