Wear Resistance Sapphire Windows 25-250mm Diameter with 0.15-120mm Thickness for Laser Systems
Price:
Negotiable
MOQ:
5 Pieces
Delivery Time:
1-4 weeks
Brand:
BonTek
Product Description
Product Overview
Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications such as laser systems. They offer extreme surface hardness, high thermal conductivity, high dielectric constant, and resistance to common chemical acids and alkalis.
Sapphire is the second hardest crystal next to diamonds, allowing for thinner window designs with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) with a transmission range from 0.2 - 5.5µm.
Available Orientations
C-axis [0001], R-axis [1-102], A-axis [11-20], M-axis [10-10], Random
Sapphire Windows Specifications
| Parameter | Specifications |
|---|---|
| Diameter / Width | 25.0 - 250.0 mm |
| Tolerance | Standard ± 2°, Special to ± 0.1° |
| Thickness | Minimum 0.15 mm, Maximum 120.0 mm |
| Surface Finish | As cut, fine ground, lapped, polished s/d 80/50, 60/40, 40/20, 20/10, 10/5 (MIL-0-13830A) |
| Ends / Edge Quality | Fine ground, 80/50 |
As-Grown Sapphire Tubes
| Parameter | Specifications |
|---|---|
| Dimensions | Up to 50 mm inner diameter, 0.5 - 4.0 mm wall thickness, 300-600 mm length |
| Orientation | C-axis in the length of the tube |
Polished Sapphire Tubes
Up to 50 mm inside diameter, 0.5 - 3.0 mm wall thickness, 80-350 mm length
Sapphire Ingots
| Parameter | Specifications |
|---|---|
| Diameter/Width | 5-220 mm |
| Thickness/Length | 25 - 125 mm |
| Surface Quality | As-cut |
| Ends/Edge Quality | Diamond cut |
Optical Properties of Sapphire Al2O3
| Property | Value |
|---|---|
| Transmission Range | 0.17 to 5.5 microns |
| Refractive Index | 1.75449 (o) 1.74663 (e) at 1.06 microns |
| Reflection Loss | 11.7% (o-ray) 14.2% (e-ray) at 1.06 microns |
| Index of Absorption | 0.3 x 10-3 cm-1 at 2.4 microns |
| dN/dT | 13.7 x 10-6 at 5.4 microns |
| dn/dm = 0 | 1.5 microns |
Physical Properties of Sapphire Al2O3
| Property | Value |
|---|---|
| Density | 3.97 g/cm3 |
| Melting Point | 2040°C |
| Thermal Conductivity | 27.21 W/(m x K) at 300 K |
| Thermal Expansion | 5.6 x 10-6/K (parallel C-axis) & 5.0 x 10-6/K (perpendicular C-axis) |
| Hardness | Knoop 2000 kg/mm2 with 2000g indenter |
| Specific Heat Capacity | 419 J/(kg x K) |
| Dielectric Constant | 11.5 (parallel C-axis) 9.4 (perpendicular C-axis) at 1MHz |
| Young's Modulus (E) | 335 GPa |
| Shear Modulus (G) | 148.1 GPa |
| Bulk Modulus (K) | 240 GPa |
| Apparent Elastic Limit | 275 MPa (40,000 psi) |
| Poisson Ratio | 0.25 |
Handling & Acceptance Guidelines
- Products are fragile and packed with adequate protection. We use premium domestic and international express services to ensure transportation quality.
- Upon receipt, handle with care and inspect outer carton condition. Photograph packaging before removal.
- Open vacuum packaging in clean room environment prior to application.
- If damage is discovered during transit, photograph or video immediately. Do not remove damaged products from packaging. Contact us for resolution.
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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