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DEEP SCRATCH RESISTANCE ISO 1518 (adapted)

1. TOOLS
1.1 Appropriate scratch apparatus
1.2 A needle with a 1 mm hard hemispherical tip
      
2. SAMPLING
2 samples (1 parallel and 1 perpendicular to the plank’s length). Each sample shall be of the appropriate dimension to fit the scratch apparatus platform

3. ENVIRONMENTAL CONDITIONS
Condition the sample on a flat surface for 24 hours at 23(+/-2)°C and 50(+/-5)% relative humidity

4. TESTING PROCEDURE
4.1 Clean the sample with absorbent cotton or soft cloth

4.2 Examine the needle under x30 magnification to check that the hard tip is smooth, hemispherical and free from contamination

4.3 Make sure the needle is perfectly perpendicular to the panel holder
4.4 Clamp the sample, coating face up, onto the apparatus, with the longer side of the panel parallel to the direction in which the scratch will be made

4.5 Place 2.5 Kg on the holder above the needle

4.6 Start the motor of the apparatus and allow the scratch to be made on the coating

4.7 Remove the sample and check under sufficient D65 Average North Sky Daylight and with the help of a with a x2 or x3 magnifying glass whether there is a scratch. In case there is a scratch, record its characteristics

4.8 Perform the test 3 times on each of the 2 samples

5. ASSESSING TEST RESULTS
Passed in case there are no scratches under 2.5 Kg

Note 1: the parties can agree that some types of scratches are acceptable while some others are not.

Note 2: aside from the pass/fail test at 2.5 Kg defined above, the parties can also agree to perform the test in order to determine the minimum load to cause penetration out of 3 panels



 
  
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