ASTM D3359 Testing

Applied Technical Services conducts ASTM D3359 testing to measure the adhesion of film coatings on metallic substrates. Adhesion tests intentionally produce coating failures that allow experts to evaluate the strength of the adhesive bond between a coating and a substrate. These tests help determine a material’s suitability for specific tasks in specific environments and provide information relevant to research, development, and quality control.

What is ASTM D3359?
ASTM D3359 is a visual adhesion test used to evaluate the adhesion strength between a coating and substrate. The standard consists of two test methods, the x-cut test and the crosscut or cross-hatch test.

X-Cut Test

Primarily used for coating systems thicker than five mils, the X-cut test is a field test that evaluates the adequacy of a coating’s adhesion. During the procedure, technicians use a sharp cutting tool to make an “X” shaped cut in the film. The two cuts are about 1.5 inches long and intersect near the middle of the ‘X’ shape at an angle between 30 and 45 degrees. Technicians repeat the process until the incision penetrates the coating and reaches the substrate. Next, technicians apply a three-inch piece of tape to the intersection of the X for 30 to 90 seconds before removing the tape. Technicians rate the adhesion on a scale of 0 to 5, with zero being the weakest and five being the strongest. For example, a new coating should have little to no peeling, earning the coating a rating of 4 or 5, whereas coatings that suffer from excessive peeling or removal will be rated closer to 0.

Cross-Hatch Test

During the procedure, technicians cut a lattice pattern into the coating, penetrating down to the substrate. Technicians then brush the test area to remove debris and apply adhesive tape to the entire lattice pattern before quickly removing the tape. Technicians evaluate the test area to compare the test results to the corresponding ASTM standards, which exist on a scale that ranges from 0B to 5B. 0B represents the weakest coating classification, whereas 5B represents the strongest adhesion. For example, ASTM 5B illustrates that the cross-hatch test failed to yield a coating failure, and the subsequent classifications each represent a high percentage of coating failure in the test area.
ASTM D4060 Testing Explained More About Our ASTM Testing Capabilities
Applied Technical Services offers various ASTM-compliant services that benefit numerous industries, including:
Our experienced team uses our advanced facilities to conduct ASTM testing services that address our client’s specific needs and requests. We house multiple A2LA-accredited facilities specializing in chemical, metallurgical, mechanical, and environmental testing. We provide competitively priced services with quick turnaround times at the convenience of our clients to ensure that their experience with us is professional and positive. Please submit an online request form or call +1 (888) 287-5227 to request service from our ASTM testing lab.

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