2-inch Sapphire Ingot Item Specification
Item
|
Specification
|
Crystal Materials |
99.996% High purity, Monocrystalline Al2O3
|
Surface Orientation |
C-plane[0001]
|
M-Axis Orientation Tolerance |
0.0° ± 0.1°
|
A-Axis Orientation Tolerance |
0.0° ± 0.1°
|
Diameter |
51.0 mm ± 0.1 mm
|
Minimum Usable Core Length |
> 40.0 mm
|
Exclusion Allowance |
< 15% per order
|
Major Flat |
A [11-20] ± 0.2°
|
Major Flat Length |
16.0 mm ± 0.5 mm
|
Face Surface Fnish |
None
|
Front Surface Finish |
Fine Ground
|
OD Surface Finish |
Fine Ground
|
Bubble |
None by visual inspection in intensive light
|
Grain Boundary / Lineage |
None by visual inspection in polarized light
|
Cracks / Pits |
None
|
Cleanliness |
Free visible contamination
|
Notes 1. Exclusion Areas: Allowance as noted. Exclusion areas will be identified and marked on individual cores. Exclusion areas will not be billed. 2. Material Documentation: A unique and traceable Lot ID will be marked on each core. 3. Shipment Documentation: Each shipment shall include a Packing List indicating total useable millimeters of core in the shipment, and a Certificate of Conformance attesting to the conformity of the useable material to the specifications. |