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Massive Selection for Semi - Sapphire Al2O3 Wafer & Ingot – WMC


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Sapphire Crystal, with its structural strength of the second hardest crystal next to diamonds, is widely used in the fabrication of single crystal substrate, superconducting film substrate material, blue, purple and white light emitting diodes LEDs,  high-temperature infrared window, and a blue laser LD Industrial preferred substrate. Single Crystal Sapphire or single crystal aluminum oxide Al2O3 is useful in a transmission range from 0.2-5.5 μm as well as in other advanced power semiconductors manufacturing industries.

No. Items Standard Specification
1 Diameter mm 50.8±0.05 100±0.1 150±0.2
2 Growth Method HEM HEM HEM
3 Orientation (C-A) or (C-M) (C-A) or (C-M) (C-A) or (C-M)
4 Primary Flat Location A-axis ±0.2° A-axis ±0.2° A-axis ±0.2°
5 Primary Flat Length mm 16±0.5 30±0.5 47.5±0.5
6 Thickness μm 430±10 650±20 1300±20
7 TTV μm max 5 10 15
8 Bow μm max 5 10 15
9 Warp μm max 8 15 30
10 Surface Finish P/E P/E P/E
11 Surface Roughness nm <0.2 (epi-ready, for polished surface)
12 Packing In vacuum bag filled with nitrogen atmosphere
13 Remarks Ingot and bulk up to 8″ is available upon request.
Linear Formula Al2O3
Molecular Weight 101.96
Crystal structure Hexagonal
Appearance Translucent solid
Melting Point 2050 °C, 3720 °F
Boiling Point 2977 °C, 5391 °F
Density at 300K 4.0 g/cm3
Energy Gap N/A
Intrinsic resistivity 1E16 Ω-cm
CAS Number 1344-28-1
EC Number N/A
  • Sample Available Upon Request 
  • Safety Delivery of Goods By Courier/Air/Sea
  • COA/COC Quality Management
  • Secure & Convenient Packing
  • UN Standard Packing Available Upon Request
  • ISO9001:2015 Certified    
  • CPT/CIP/FOB/CFR Terms By Incoterms 2010
  • Flexible Payment Terms T/T D/P L/C Acceptable
  • Full Dimensional After-Sale Services
  • Quality Inspection By Sate-of-the-art Facility
  • Rohs/REACH Regulations Approval
  • Non-Disclosure Agreements NDA
  • Non-Conflict Mineral Policy
  • Regular Environmental Management Review
  • Social Responsibility Fulfillment
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