what does 9H mean in relation to coating

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dennis hiip

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I'm thinking it's meant to designate hardness. Diamond being a hardness of 10.
 
dennis hiip said:
I'm thinking it's meant to designate hardness. Diamond being a hardness of 10.
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It means squat. Meaning don’t buy into the marketing of coating hardness. They can still swirl and scratch. They do help with wash induced marring that may occur.
 
IMO:
Marketing moguls’ mostly meaningless meanderings.


Bob
 
NOTHING beats the marketing of top coat F11, period! Just this morning I put on Peppa Pig for my three-year-old daughter and an advertisement for that damn company came up

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Klasse Act said:
NOTHING beats the marketing of top coat F11, period! Just this morning I put on Peppa Pig for my three-year-old daughter and an advertisement for that damn company came up

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Marketing works. It kept us talking about it. Lol
 
IMHO, it's just a silly marketing ploy. I haven't noticed coatings being any less resistant to swirling or light scratches than the original clearcoat that comes with a car from the factory.
 
It refers to the hardness of pencil lead with 9B as the softest and 9H being the hardest. A standard number 2 pencil that we all grew up with is actually an HB lead which is close to the middle of the scale. The 9H hardness test measures the hardness of a clear surface coating by its ability to resist scratching with a 9H pencil.
 
Klasse Act said:
NOTHING beats the marketing of top coat F11, period! Just this morning I put on Peppa Pig for my three-year-old daughter and an advertisement for that damn company came up

Sent from my SM-G950U using Tapatalk
Click to expand...

They do know how to market that product and I was intrigued at first. Then I took a closer look at this picture. They say that it is the surface of steel magnified thousands of times under an electron microscope. I didn't know that electron microscopes had blue sky and clouds.

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I'm no expert but you know ? Holiday Inn ?

Got this from the interweb....

The Mohs' hardness scale was developed in 1822 by Frederich Mohs.
This scale is a chart of relative hardness of the various minerals (1 - softest to 10 - hardest).” - as defined by Mineralogical Society of America.

The common softest mineral out there would be talc (baby powder rates as a 1 on the Moh scale) and the hardest substance in nature is a diamond (rated as a 10 on the Moh scale). The next closest object in hardness to a diamond coming in at a 9, would be ruby and tungsten carbide (commonly used in drill bits). Synthetic diamonds or cubic zirconia, comes in at 8.

Most car owners are also generally concerned over the possible damage from vandalism including:

a) Coins (3.5 on the Moh scale)
b) Knife blades (5.5 on the Moh scale)
c) Fingernails (2.5 on the Moh scale)

Some coating specialists claim that they have a coating with a hardness of 9. If this were true, a synthetic diamond (cubic zirconia at 8) would not be able to scratch such a coating! Only other elements such as ruby, tungsten carbide and real diamonds would be able to scratch these coatings claiming a hardness of 9.

"A hardness claim of 9 on a glass/quartz/ceramic/crystal coating is physically impossible."

Coatings are formulated to be tough enough to withstand most of the common elements that car owners have to face with daily driving. Si02 coating will cover the bulk of your protective needs. It would be highly unlikely someone would come out to intentionally vandalise a car with a real diamond ring, real ruby bracelet or tungsten carbide drill!

Another common test of hardness for coatings is the infamous pencil hardness test or the Wolff-Wilborn test. This test which is carried out in a laboratory setting where pencils of various hardness are used to intentionally scratch a surface or coating to see how well it resists scratching. Usually with a maximum pressure of about 2 lbs/f using different pencils, the hardness rating (H) is derived based on the pencil used. However, such tests do not represent real world conditions. Even poor car washing practices such as using a damaged rag can potentially scratch a coating on a car.
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The Guz said:
It means squat. Meaning don’t buy into the marketing of coating hardness. They can still swirl and scratch. They do help with wash induced marring that may occur.
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If it’s not swirls, what exactly is “wash induced marring”?
 
Must be reading about Adams new product another spray ceramic.
 
Eldorado2k said:
If it’s not swirls, what exactly is “wash induced marring”?
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You can get swirls from lots of different sources such as washing, drying, bird dropping removal, and a big one in my area is snow/ice removal. Even with the softest snow blade or brush you'll probably get light swirl marks.

I define wash induced marring as the *very* light marks (swirls) that occasionaly show up from the washing/drying proces for someone taking the right precautions. The kind you only see when you look at the paint under certain conditions and certain angles. We're not talking about the marks that result from washing with a red shop rag and drying with an old terry cloth towel which cloud the paint and make for great 50/50 pictures here at autogeek. Personally I've noticed my coated vehicles stay marring free far longer with a coating than when I used a sealant. With a sealant, I'd start seeing the light marks at the six month point, maybe sooner if the winter was bad and I had to clean off my car more often. With a coating, I can easily go a year. The difference for me was quite noticable on my wife's Toyota which marrs if you breath on it wrong.
 
Desertnate said:
You can get swirls from lots of different sources such as washing, drying, bird dropping removal, and a big one in my area is snow/ice removal. Even with the softest snow blade or brush you'll probably get light swirl marks.

I define wash induced marring as the *very* light marks (swirls) that occasionaly show up from the washing/drying proces for someone taking the right precautions. The kind you only see when you look at the paint under certain conditions and certain angles. We're not talking about the marks that result from washing with a red shop rag and drying with an old terry cloth towel which cloud the paint and make for great 50/50 pictures here at autogeek. Personally I've noticed my coated vehicles stay marring free far longer with a coating than when I used a sealant. With a sealant, I'd start seeing the light marks at the six month point, maybe sooner if the winter was bad and I had to clean off my car more often. With a coating, I can easily go a year. The difference for me was quite noticable on my wife's Toyota which marrs if you breath on it wrong.
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Great... I just made a thread asking about this. So basically it just means swirls?

So why say coatings don’t resist swirls... But they resist minor swirls? That doesn’t make any sense.

IMO marring means marks, not swirls. And I’ve never seen marks get left behind after washing a car.
 
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