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| About
Mohs' Hardness |
Mohs' hardness value indicates the materials resistance
to scratching.
A German minerologist Fredrich Mohs (1773-1839)
created the scratch hardness test in 1812. His
aim was to measure the resistance, or hardness
of a mineral when scratched with varying objects,
as well as other minerals. Mohs then categorized
the minerals on a scale from 1 to 10, with 10
being the hardest (diamond) and 1 being the softest
(talc).
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|
Mohs'
Hardness Scale |
|
Mohs'
Hardness |
Mineral |
|
Mohs'
Hardness |
|
10 |
Diamond |
Diamond |
10 |
| 9.5 |
|
"Carborundum"
= Silicon Carbide |
9.5 |
|
9 |
Corundum |
Ruby,
Sapphire |
9 |
| 8.5 |
|
Alexandrite |
8.5 |
|
8 |
Topaz,
Spinel |
Topaz,
Spinel |
8 |
| 7.5 |
|
Emerald,
Aquamarine |
7.5 |
|
7 |
Quartz |
Garnet,
Crystal, Tourmaline, Zircon |
7 |
| 6.5 |
|
Steel
Needle, Streak Plate, Peridot |
6.5 |
|
6 |
Orthoclase,
Feldspar |
Pumice,
Opal, Lapis Lazuli, Moonstone, Turquoise,
Eagle Wax "KAMIKAZE" |
6 |
| 5.5 |
|
Window
Glass, Glass, typical Knife Blade |
5.5 |
|
5 |
Apatite |
Pocket
knife, Tooth structure Enamel |
5 |
| 4.5 |
|
Platinum,
Amalgam |
4.5 |
|
4 |
Fluorite |
Pearl,
Coral, Malachite |
4 |
| 3.5 |
|
Penny,
Copper Coin, Tooth structure Dentin |
3.5 |
|
3 |
Calcite |
Gold(18k),
Chalk(calcium carbonate) |
3 |
| 2.5 |
|
Fingernail,
Gold(14k), Silver |
2.5 |
|
2 |
Gypsum |
Amber,
Ivory |
2 |
| 1.5 |
|
Sulphur |
1.5 |
|
1 |
Talc |
Graphite |
1 |
|
This
implies that the polymer, when applied on the car,
creates the scratch hardness and avoids lots of scratches.*
Please do not try to scratch your car! The KAMIKAZE's
hardness was tested by Japan Paint Inspection and
testing Association.
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