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PAINT ADHESION


Cross Hatch Cutter

Elcometer Cross Hatch Cutter

Description

The Elcometer cross hatch cutter is a simple means of assessing the adhesion or resistance to separation of coatings from substrates.

The cutter, which has of a number of blades at equal spacing, is used to score through the coating down to the substate. Two cuts are made at right angles to each other resulting in a grid of small squares. Debris is removed from the surface of the sample and then adhesive tape is applied over the grid. After removal of the tape, the coating adhesion is assesed by reference to charts shown in the relevant standard.

Specification

ASTM D 3359 - Metal Substrates
Coating thickness (m)Cut spacing (mm)Number of cuts
0 to 50111
50 to 12526
>125>5 

ISO 2409 - Hard Substrates (metal)
Coating thickness (m)Cut spacing (mm)Number of cuts
0 to 6016
61 to 12026
121 to 25036

ISO 2409 - Soft Substrates (wood, plaster)
Coating thickness (m)Cut spacing (mm)Number of cuts
0 to 6026
61 to 12026
121 to 25036

Standards

ASTM D 3359-09Standard Test Methods for Measuring Adhesion by Tape Test
BS EN ISO 2409: 2007
replaces
BS 3900-E6:1992
Paints and varnishes. Cross-cut test






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