RUBY NOZZLE

RUBY NOZZLE

RUBY NOZZLE Sapphire(Al203)property list

RUBY NOZZLE Sapphire(Al203)property list

Molecular formula

Al203

Density 

3.95-4.1g/cm ³

Crystalstructure

Hexagonal crystal

Lattice constant

a =4.785A,c=12.991A

Mohs hardness

9(below the diamond:10)

Melting point

2045°C

Boiling point

3000°C

Thermal expansivity

5.8×10-6/K

Specific heat

0.418W.s/g/k

Thermal conductivity

25.12W/m/k(@100°C)

Refractive index

no=1.768  ne=1.760

dn/dt

13×10-6/K(@633nm)

Light penetration

T˜80% (0.3~5µm)

Permittivity

11.5(//c),9.3(?c)
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