ISO 2409 Cross-cut test
Cutting tool
Single bladed knife or multi-blade cutting tool with 6 blades spaced 1 or 2 mm apart
Spacing of cuts
0 - 60 microns: 1 mm spacing, hard substrates
0 - 60 microns: 2 mm spacing, soft substrates
60 - 120 microns: 3 mm spacing, hard/soft substrates
121 - 250 microns: 3 mm spacing, hard/soft substrates
Procedure
Make 6 parallel cuts with defined space in the coating.
Repeat operation, crossing original cuts at 90o so that a grid pattern is formed
Brush with soft brush.
Apply adhesive tape and pull off.
Classify results in accordance with table.