Altana Byko-Cut Universal Short Instructions Manuel d'utilisateur télécharger pdf (Page 3)

269 020 584 E 0806

Additives & Instruments

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Measure what you see.

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ENGLISH

How to perform the Cross-Cut Test How to analyze the Cross-Cut Test

• Select the appropriate cross-cut tool based on the coating

ﬁlm thickness ( see table )

• Make a lattice pattern in the ﬁlm with appropriate tool,

cutting to the substrate

• Brush in diagonal direction 5 times each, using a brush

pen or tape and remove with tape

• Examine the grid area using an illuminated magniﬁer

ISO Class: 0 / ASTM Class: 5B

• Edges of cut are completely smooth

• None of the squares of the lattice is

detached

ISO Class: 1 / ASTM Class: 4B

• Detachment of small ﬂakes at the

intersection of the cuts

• Max. 5 % of the cross cut area is

affected

ISO Class: 2 / ASTM Class: 3B

• Flaked along the edges and /or

intersection of the cuts

• Affected cross-cut area: 5% - 15%

ISO Class: 3 / ASTM Class: 2B

• Squares are partly / wholly damaged

• Affected cross-cut area: 15% - 35 %

ISO Class: 4 / ASTM Class: 1B

• Squares partly / wholly detached

• Affected cross-cut area: 35% - 65 %

ISO Class: 5 / ASTM Class: 0B

• Any ﬂaking worse than ISO 4 or ASTM 1B

• Affected cross-cut area > 65%

Film Thickness Cutter Spacing

0 – 60 µm 1 mm

60 – 120 µm 2 mm

> 120 µm 3 mm

1 2 3 4

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Altana Byko-Cut Universal Short Instructions Manuel d'utilisateur Page 3