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Table 2: Buchholz indentation - Classification of test results
Indentation length
(mm)
0.8
0.85
0.9
0.95
1.0
1.05
1.1
1.15
1.2
1.3
1.4
1.5
1.6
1.7
Indentation depth
Indentation
resistance
(µm)
125
118
111
105
100
95
91
87
83
77
71
67
63
59
Minimum coating thickness for which
(mils)
5
0.2
6
0.24
7
0.28
7
0.28
8
0.31
9
0.35
10
0.39
11
0.43
12
0.47
14
0.55
16
0.63
18
0.71
21
0.83
24
0.94
a measurement is valid
(µm)
(mils)
15
0.59
20
0.79
20
0.79
20
0.79
20
0.79
20
0.79
20
0.79
25
1
25
1
25
1
30
1.18
30
1.18
35
1.38
35
1.38
13
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