Cross Hatch Adhesion Tester
Cross Hatch Adhesion Tester or Adhesion Testers verify that both surface preparation and coating application are within specification.
From the largest man-made structures to the smallest household appliances, most manufactured products have a protective or cosmetic coating. Premature failure of this coating can, at the very least, result in additional costs of rework.
Adhesion testing after the coating process will quantify the strength of the bond between substrate and coating, or between different coating layers or the cohesive strength of some substrates. Routine adhesion testing is used as part of inspection and maintenance procedures to help detect potential coating failures.
Elcometer offer a highly comprehensive range of Adhesion Gauges designed specifically to meet your requirements.
Cross Hatch Adhesion Tester or Cross Hatch Cutters
Using this Cross Hatch adhesion tester is a fast, low cost, visual comparison method for paint and powder coatings up to a thickness of 250µm in order to evaluate the coating adhesion. The coating is cut into small squares, thereby reducing lateral bonding, and the coating adhesion assessed against ISO, ASTM or Corporate Standards.
- Advantages – A fast, low cost, comparison method – see table below under “Description”
- Possible Limitations – A subjective test for flat surfaces for a limited thickness range – 250mic
- Applications – For paint and powder coatings up to a thickness of 125mic
| Description | IS0/BS/DIN | ASTM |
| The edges of the cuts are completely smooth, none of the squares of the lattice are detached | 0.5 | B |
| Detachment of small flakes of the coating at the intersections of the cuts, A cross cut area not significantly greater than 5%, is affected | 1 | 4B |
| The coating has flaked along the edges and/or at the intersections of the cuts. A cross cut area significantly greater than 5%, but not significantly greater than 15%, is affected | 2 | 3B |
| The coating has flaked along the edges of the cuts partly or wholly in large ribbons, and / or it has flaked partly or wholly on different parts of the squares. A cross cut area significantly greater than 15%, but not significantly greater than 35%, is affected | 3 | 2B |
| The coating has flaked along the edges of the cuts in large ribbons and/or some squares have detached partly or wholly. Across cut area significantly greater than 35% but not significantly greater than 35% is affected | 4 | 1B |
| Any degree of flaking that cannot even be classified by classification 4/1B | 5 | 0B |
