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Cross Cut Test

When it comes to preserving product quality, the coating's state is crucial. The protection is more dependable the better the coating adheres to the substrate. The cross cut test is a somewhat easy and quick way to determine how well coatings or paints adhere, flex, and hold up against surfaces in materials testing.

The cross cut method assesses a coating's effectiveness under shear stress and damage. Structured surfaces with higher layer thicknesses and layer thicknesses than 250 µm are not testable. Cross cut testing is destructive, thus it is limited to a specific location on an assembly or sample part at the start of a project.

Cross Cut Test

T, C&A Lab's test methods are as follows

The test involves making a series of shallow incisions in a grid pattern or a series of parallel lines on the coated surface using a cutting tool such as a knife or razor blade. The cuts are usually spaced a few millimeters apart. The cuts should be deep enough to penetrate the coating and reach the substrate below.

After making the cuts, a piece of tape is securely applied to the cut grid or lines. The tape can then be quickly removed by pulling it off at an angle of 90 degrees to the surface. The adhesion of the coating to the substrate is evaluated according to the appearance of the coating and the degree of removal.

The test is evaluated visually with the naked eye by comparing the raster image of the cross-section with the reference image in DIN EN ISO 2409. The scale can range from 0 to 5, where 0 indicates no coating removal and 5 indicates complete coating removal. The rating provides an indication of the adhesion strength of the coating to the substrate, with higher ratings indicating better adhesion.

Evaluation of adhesion by cross cut test.Fig 1. Evaluation of adhesion by cross cut test. (Vindedze E, et al. 2020)

Further research services from T, C&A Lab

T, C&A Lab provides additional surface characterization choices in addition to basic techniques like color, gloss, and roughness assessments, allowing claims to be made statements specific characteristics or reasons for surface failure.

To investigate the adherence of coated parts further, we employ scanning electron microscopy. We can display surfaces at higher magnifications and wide depths of focus for surface structures when compared to an optical microscope.

We describe the elemental composition of the surface coating both qualitatively and semi-quantitatively using an EDX analysis unit on the SEM.

Please get in touch with our team if you have any questions or would like more information about our cross-cut testing services. We will be pleased to assist and stand by you.

Features of T, C&A Lab's services

  • Professional equipment: We use advanced cross cut testing equipment to ensure the accuracy and reliability of our tests.
  • Experienced technical team: Our technical team has rich testing experience and professional knowledge to provide professional testing services and solutions.
  • Customized test solutions: We provide customized test solutions according to customer needs and material properties to ensure the validity and reliability of test results.
  • Fast delivery: We are committed to efficient testing services to ensure that test results are delivered to customers in the shortest possible time.
  • Comprehensive reports: We provide detailed test reports, including test methods, result analysis and recommendations, to help customers understand the adhesion properties of materials or coatings.


  1. Vindedze E, et al. "Evaluation of Adhesion of Polymer Composite Coatings." IKey Engineering Materials. 2020, 850, 100-106.

Note: this service is for Research Use Only and Not intended for clinical use.


T,C & A LAB is an independent lab providing quality or custom testing, characterization and analysis of a variety of materials. Our engaged experts are ready to help you.

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