Any Major Differences b/t these hybrid coatings?

[blake_jl]

Opti-Coat doesn't claim 9H MOHs Scale. It claims 9H in the Wolff Wilborn pencil test for scratch resistance which is what most coatings use to measure.

You see coatings in this test use 500g and 1000g and claim 9H with the pencil.

Opti-Coat took 1100g with a tungsten carbide needle which is 9.5H Mohs scale, so this is well above 9H in the pencil scale and quite impressive IMO

 

[blake_jl]

BTW - I didn't see any arguments here either on this chemistry topic. Quite enjoyed reading it.

 

[FUNX650]

Opti-Coat doesn't claim 9H MOHs Scale.

-Although this appears all over the internet, including almost every detailing-site
(even I have used this oft repeated terminology)...

-And...An Optimum spokesperson once stated:
"The statement about 9H hardness was for the ingredients, of course this will vary
depending on the surface it becomes a part of".

-I'm not going to beleaguer this point...
No need of it anymore...IMHO.

It claims 9H in the Wolff Wilborn pencil test for scratch resistance which is what most coatings use to measure.

I imagine:
The W.W. pencil test follows the guidelines outlined in the:
ASTM D3363-05(2011)e2 "Standard Test Method for Film Hardness by Pencil Test"

-And I might just be hoping:
That OPT also used these ASTM's...D7027-05e-1; and D7187-10

You see coatings in this test use 500g and 1000g and claim 9H with the pencil.

Opti-Coat took 1100g with a tungsten carbide needle which is 9.5H Mohs scale, so this is well above 9H in the pencil scale and quite impressive IMO

^^^:iagree:^^^

Good Post...Good Information...blake_jl...!! :xyxthumbs:

BTW - I didn't see any arguments here either on this chemistry topic. Quite enjoyed reading it.

I've enjoyed it as well...(maybe too much! LOL)

Bob