Guild optics is a manufacturer of sapphire substrates.
Sapphire thermal conductivity vs temperature.
Sapphire is a notable example of variable thermal conductivity based on orientation and temperature with 35 w m k along the c axis and 32 w m k along the a axis.
4 5 10 6 k 1 and 1000 c.
Good thermal conductivity and high heat resistance.
Wood generally conducts better along the grain than across it.
Mechanical chemical thermal and more all listed out in plain english.
13 10 6 c 0 57 µm 20 c.
23 0 w m c at 77 c.
The properties of sapphire.
Excellent thermal conductivity at low temperatures allows single crystal sapphire as a transparent material to be used in many diverse fields requiring thermal conduction and heat radiation.
25 8 w m c at 70 c.
Temperature coefficient of refractive index.
40 w m k 298 k.
Thermal electrical and optical ir transmission vs wavelength 500 c 20 c 1000 c 0 0 2 3 4 5 6 10 20 30 40 50 60 70 80 90 100 wavelengths microns.
Single crystal sapphire is used as a material for substrates in super high frequency regions.