Paint Scratch Testing
Applied Technical Services conducts paint scratch testing to simulate the stresses that materials endure daily. Manufacturers use coating tests to evaluate the adhesive properties of the coating, ensuring that the product or equipment performs as intended in their desired applications.
ASTM Adhesion Standards
ASTM Class 5B
None of the squares of the lattice pattern are detached, and the edges around the cuts are smooth.
ASTM Class 4B
Small flakes of coating appear along the intersections of the lattice pattern, but less than 5 percent is affected.
ASTM Class 3B
Coating flakes along the lattice pattern intersect, affecting between 5 percent to 15 percent of the pattern.
ASTM Class 2B
Coating flakes resembling ribbons along the edges and intersections of the cut, affecting between 15 to 35 percent of the pattern.
ASTM Class 1B
The coating flakes are now large ribbons, and partially or wholly detached squares form the lattice pattern. Between 35 to 65 percent of the area is affected.
ASTM Class 0B
Any degree of flaking that doesn’t fit the previous classifications.
Common Causes of Adhesion Failures
- Excessive substrate moisture
- Excessive dry film build
- Extreme temperatures
- High moisture content in the coating
- Coating isn’t compatible with the finishing system
- Insufficient curing and drying
- Substrate contamination
Applied Technical Services’ Coating Services
ATS provides various inspection and testing services for industrial coatings, including:
- Acid dissolution analysis of anodic coatings
- Adhesion and abrasion
- Coating thickness
- Coating weight
- Color and gloss
- Holiday detection
- Metal and oxide coating thickness
- Surface profile measurements
- Thermal properties
About Applied Technical Services
ATS is an industry leader in consulting engineering, inspection, and testing services and provides domestic and international services. Our commitment to customer service has earned us a positive reputation amongst our ever-growing list of clients. We employ professional and passionate experts that collaborate with clients to develop a plan of action for our lab services to ensure client satisfaction. Please call +1 (888) 287-5227 for further details about our paint scratch test and other coating testing services.
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