Cross-Hatch Adhesion Testing for Powder Coated Parts

Cross-Hatch Adhesion Testing for Powder Coated Parts

Cross-hatch adhesion testing checks how a coating resists removal around a controlled grid of cuts. It can reveal weak attachment at the tested location. It does not measure bond strength in pounds per square inch or prove that every coated part will perform the same...
What Does an MEK Rub Test Tell You About Powder Coating?

What Does an MEK Rub Test Tell You About Powder Coating?

An MEK rub test checks how a coating resists a particular solvent under controlled rubbing. It can help assess the cure of a thermoset powder coating, but a result needs the powder manufacturer’s guidance and agreed acceptance criteria. It is not a universal proof of...
How Is Powder Coating Thickness Measured?

How Is Powder Coating Thickness Measured?

Powder coating thickness is usually measured after curing with a gauge suited to the base metal. The useful result is a set of readings compared with agreed limits, rather than one number taken anywhere on the part. ASTM D7091 describes the magnetic and eddy-current...