4-inch 0.5mm C-Axis Sapphire Crystal Wafer - Single Crystal Epi-Ready with 2040°C Melting Point and 2000 kg/mm² Hardness
Price:
Negotiable
MOQ:
5 Pieces
Delivery Time:
1-4 weeks
Brand:
BonTek
Product Description
Product Overview
This 4-inch diameter, 0.5mm thick sapphire crystal wafer features single crystal C-axis orientation and is epi-ready for immediate use. Manufactured using Horizontally Directed Crystallization (HDC) technology, it delivers exceptional optical, physical, and chemical properties for demanding industrial applications.
Key Features & Benefits
- Single crystal Al2O3 sapphire with C-axis orientation
- 4-inch diameter with 0.5mm thickness specification
- Epi-ready surface for immediate processing
- High strength retention at temperatures up to 2040°C
- Excellent chemical resistance to acids and alkalis
- Superior optical transmission from visible to near infrared
- Knoop hardness of 2000 kg/mm² for exceptional durability
Technical Specifications
Optical Properties
| Property | Specification |
|---|---|
| Transmission Range | 0.17 to 5.5 μm |
| Refractive Index | 1.75449 (o) 1.74663 (e) at 1.06 μm |
| Reflection Loss | 11.7% (o-ray) 14.2% (e-ray) at 1.06 microns |
| Absorption Index | 0.3 × 10⁻³ cm⁻¹ at 2.4 μm |
| dN/dT | 13.7 × 10⁻⁶ at 5.4 μm |
Physical Properties
| Property | Specification |
|---|---|
| Density | 3.97 g/cm³ |
| Melting Point | 2040°C |
| Thermal Conductivity | 27.21 W/(m × K) at 300 K |
| Thermal Expansion | 5.6 × 10⁻⁶/K (parallel C-axis) & 5.0 × 10⁻⁶/K (perpendicular C-axis) |
| Hardness | Knoop 2000 kg/mm² with 2000g indenter |
| Young's Modulus | 335 GPa |
| Dielectric Constant | 11.5 (parallel C-axis) 9.4 (perpendicular C-axis) at 1MHz |
Product Images
Handling & Quality Assurance
Important Handling Instructions
- Product is fragile - handle with extreme care during unpacking
- Inspect outer carton condition before opening
- Open vacuum packaging only in clean room environments
- Document packaging condition with photos before removal
- Contact supplier immediately if damage is detected during transit
All sapphire wafers undergo rigorous quality acceptance checks and are vacuum-sealed for protection. We utilize premium domestic and international express services to ensure secure transportation and delivery.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Hangzhou Freqcontrol Electronic Technology Ltd.
Location
Room 1106, CIBC, No.198 Wuxing Rd, Hangzhou, P.R.China
Contact Person
Xu