Altana Buchholz Indentation Tester Operating Instructions Uživatelský manuál stáhnout pdf (Strana 5)

3. During the indentation test the

paint lm generally should show a

plastic but no considerable elastic

deformation. An elastic deformation

could simulate high indentation

resistance because no or only

an insignicant indentation mark

would remain after removing the

indentation tester from the paint

lm.

4. The paint lm must have a uniform,

clean and smooth surface.

5. The table shows the correlation

between identation lenght (in mm),

the indentation depth (in µm) and

the minimum coatings thickness

(µm), for which the measurement is

valid.

Measurements outside of these

tolerances cannot be considered.

Identation

length

(mm)

Indentation

resistance

a

B

Absolute

value of

error

(Δa

B

)

Lower

limit

(a

B

)min

Upper

limit

(a

B

)max

Identation

depth *

(µm)

Minimum

coating

thickness

(µm)

0,4 250,0 62,5 187,5 312,5 1 3

0,5 200,0 40,0 160,0 240,0 2 6

0,6 166,7 27,8 138,9 194,4 3 9

0,7 142,9 20,4 122,4 163,3 4 12

0,8 125,0 15,6 109,4 140,6 5 15

0,9 111,1 12,3 98,8 123,5 7 20

1,0 100,0 10,0 90,0 110,0 8 20

1,1 90,9 8,3 82,6 99,2 10 20

1,2 83,3 6,9 76,4 90,3 12 25

1,3 76,9 5,9 71,0 82,8 14 25

1,4 71,4 5,1 66,3 76,5 16 30

1,5 66,7 4,4 62,2 71,1 19 30

1,6 62,5 3,9 58,6 66,4 21 35

1,7 58,8 3,5 55,4 62,3 24 53

1,8 55,6 3,1 52,5 58,6 27 40

1,9 52,6 2,8 49,9 55,4 30 40

2,0 50,0 2,5 47,5 52,5 33 45

* rounded off to full µm

Table 1: Indentation Resistance (DIN EN ISO 2815)

=

100 mm

Indentation Length

1 2 3 4 5 6 7 8 9 10 ... 38 39

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