Boostamoose
Well-Known Member
Unfortunately it's all a marketing gimmick. There are some coatings that are extremely hard and must be sanded off or compounded off. Quartz/Silica ranks 7H on the Moh's scale. If the coating was truly 9H hardness, sandpaper could not scratch it. A masonry drill is rated at around 8.5H for further perspective.
What coating manufacturers are actually doing is something a little shady to be honest. They use the pencil lead hardness scale which is really only useful in the art world.
Pencil lead on the Moh's scale is only around 1-2H which is why we can scratch it with our finger nails. These manufacturers rate their coatings at the high end of the pencil lead scale which can range from 1 - 10H. In theory 95% of coatings out there are probably truly 2H on the Moh's scale. There are only a few certified install coatings that would be higher but not by much.
This is why it's still so easy to mar and scratch a coated vehicle. The main selling point of a ceramic coating should honestly be self cleaning properties and chemical resistance not the hardness.
What coating manufacturers are actually doing is something a little shady to be honest. They use the pencil lead hardness scale which is really only useful in the art world.
Pencil lead on the Moh's scale is only around 1-2H which is why we can scratch it with our finger nails. These manufacturers rate their coatings at the high end of the pencil lead scale which can range from 1 - 10H. In theory 95% of coatings out there are probably truly 2H on the Moh's scale. There are only a few certified install coatings that would be higher but not by much.
This is why it's still so easy to mar and scratch a coated vehicle. The main selling point of a ceramic coating should honestly be self cleaning properties and chemical resistance not the hardness.
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