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Crosshatch Adhesion Test

Last updated: July 19, 2024

What Does Crosshatch Adhesion Test Mean?

The crosshatch adhesion test is conducted to ensure that the paint coating applied on a metallic substrate adheres properly. This test is conducted with the help of crosshatch adhesion tapes.

The crosshatch adhesion test is also known as a cross-hatch test. Since it uses crosshatch adhesion tapes, this test is also sometimes also known as a tape adhesion test.

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Corrosionpedia Explains Crosshatch Adhesion Test

A crosshatch adhesion test is conducted using pressure-sensitive tape to determine the adhesion quality of a coating. In order for corrosion-resistant coatings to perform properly, they must adhere to the surface on which they are applied, and the crosshatch adhesion test can determine whether or not a coating is properly adhering to its substrate.

ASTM D3359 is known as the Standard Test Method for Measuring Adhesion by Tape Test.

This test makes use of two test methods that can be performed either in laboratories or at job sites:

  1. The X-cut tape test is used at job sites. Using a razor blade, knife or other sharp cutting tool, two cuts are made all the way through the coating down to the substrate to form an “X” mark with a 30 to 45 degree angle between the legs of the cuts. Tape is placed at the center of the “X” and then quickly removed. The area is then examined to see if any coating has been removed.
  2. The crosshatch tape test is conducted in a laboratory on coatings less than 125 microns thick. It uses a crosshatch pattern, which is created using a cutting guide or a special crosshatch cutter with preset blades, helping to ensure that incisions are parallel to each other and properly spaced. After the tape has been applied and peeled off, the area is examined and rated.

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Synonyms

Cross-hatch Test

Tape Adhesion Test

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