Chemically, sapphire is single crystal aluminum oxide (Al2O3), and is useful in a transmission range from 0.2 - 5.5µm.Sapphire , so making them ideal materials for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. And sapphire also is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance.
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Material Sapphire(Al2O3)
Density(20°C) Kg/m3 3.98×103
Crystal Structure hexagonal
Crystal lattice constant a=4.785Å c=12.991 Å
Mohs hardness 9
Melting Point 2045°C
Boiling Point 3000°C
Coefficient of Thermal Expansion α=5.8×10 -6 /K
Specific heat 0.418W.s/g/k
Thermal conductio 25.12W/m/k(@100°C)
Refractive Index (nd) no=1.768ne=1.76
dn/dt 13×10-6/K(@633nm)
Tranmission T≈85%(0.3~5um)
Permittivity 11.5(//c), 9.3(⊥c)
Sapphire Washers, Sapphire Windows, Sapphire Bearings, Sapphire Rods, Sapphire Tubes, Ruby
sapphire wafer, dome sapphire, Sapphire insulation Film, Sapphire ball lens, Sapphire/ruby ball
Specification for 12inch wafers
- 12inch 1.5mm thickness sapphire wafer specification
- Material: Single crystal Al2O3 99.999％
- Orientation: C-plane(0001) Off M -axis 0.2°±0.1
- Diameter:300±0.3mm；
- Thickness 1500um,
- Primary flat:: V-notch
- OF Orientation flat: A axis±0.1°
- Frontside Surface Roughness:Ra＜0.3nm
- Backside Surface Roughness: <0.3nm
- TTV:＜40um BOW:-30um WARP:＜60um
- Laser Mark Series No. by needs
- Package:Vacuum-sealed containers with nitrogen backfill in a class 100 environment
- Cleanliness :Free visible contamination
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Sapphire Wafer Process Step
we also can provide other materials crystal seimconductor wafers as like GaN, SiC,GaAs,InP,MgO etc.
Packing Details : Packing, BOX,CARTONS by 25pcs cassette in cleaning room by vacuumize
Delivery Details : 3-20 days after order of Solid bicycle tire tubesrecieving your pament will be send out.
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