|
RUBY NOZZLES
Mohs Hardness of various minerals and other material
Name
|
Chemical Formula
|
Hardness
|
Diamond
Corundum (Ruby, Sapphire, Padaparadshah)
Chrysoberyll
|
C
Al2O3
Al2BeO4
|
10
9
8,5
|
Topaz
Ceramics
|
Al2SiO4 (F, OH2)
(various)
|
8
7,0-8,0
|
Zirconia
Rock Crystal
Tungsten Carbide
Agate
Glass
|
ZrSiO2
SiO2
SiO2
|
7,5
7
7
6,5-7
5-6
|
Hardened Stainless Steel
Stainless Steel AISI 316
|
|
5,6-5,8
4,8
|
Calicite
Gypsum
|
CaCO3
Ca(SO4).2H2O
|
3
2
|
Talc
|
Mg3((OH)2Si4O10)
|
1
|
|
