7.12.2.3 Resistance to Dry Abrasion
Test method
A fixed load of 2.5 N is used for this method. The specific pressure depends on the size of the area to be
tested. This implies, in relation to real use in practice, a higher load on ribs, raised lettering, etc. The
abrasive wheel is made from 3 discs of abrasive material (Scotch Brite Cleaning and finishing material type
A-VFN, thickness 6.35mm).
Requirement: Rda2 = 175Rev
7.12.2.4 Scratch Resistance (Scr)
Test method:
Test Roller used: Steel
Tester Position: Tester should be placed vertically with both rubber wheels on the test substrate
Average Speed: Very slow (2 m/min)
Test Pattern: 2 perpendicular to each other
Number of Stroke: 10cm (centre 6cm for assessment)
Mutual Distance between strokes: approx 1cm
Load Applied: 10N
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