Sapphire has the outstanding physical (optical, mechanical, thermal) and chemical properties, along with the superior radiation stability.
So, the sapphire products are ideal for the applications where high pressure, vacuum, or corrosive atmosphere and widely used in electro-optics, aerospace,
bio-medical areas.
Product Details
Sapphire Physical properties
| Chemical composition: |
Al2O3 |
Molecular weight: |
101.96 |
Crystal system: |
Rhombohedral systems(R3c) |
Lattice constant: |
a=4.765A/c=13.001A*
A=10 nm |
Density (specific gravity): |
3.98 g/cm3 |
Mechanical properties: |
Hardness: |
[Mohs] 9(*Diamond=10, quartz=7)
[Knoop] 15.0 to 16.3GPa (perpendicular to the c axis)
16.4 to 19.6GPa (parallel to the c axis)
[Vickers] 2300 |
Young’s modulus: |
34 to 37 GPa |
Crushing strength: |
2000 Mpa |
Tensile strength: |
2250 Mpa |
Compression strength: |
2950 Mpa |
Bending strength: |
450 to 690 Mpa |
Destruction coefficient: |
490 to 690 Mpa |
Bulk modulus of elasticity: |
250 GPa |
Shearing modulus: |
140 Gpa |
Optical Properties |
Transmittance: |
|
Refractive index: |
1.83 at 0.26 nm
1.76 at 0.63 nm
1.58 at 5.57 nm |
Window:
Product Details
Sapphire windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres and they are widely used in electro-optics, aerospace, bio-medical areas.
| Attribute |
Specification |
Diameter (Φmm) |
1.00~250.00 |
Thickness (mm) |
≥0.1 |
Diameter Tolerance (mm) |
±0.05 |
Thickness Tolerance (mm) |
±0.02 |
Clear Aperture |
>95% |
Parallelism |
10 sec. |
Surface Quality |
80/50~10/5 |
Flatness (per 25mm@633nm) |
1λ~λ/4@any 25.4mm area |
Bevel (face width x 45°) |
<0.25mm |
Prisms:
high precision prisms, right angle prisms, corner cubes, penta prisms, dove prisms, roof prisms, rhomboid prisms or other irregular shape.
| Attribute |
Specification |
Length(mm) |
1.00~250.00 |
Width(mm) |
1.00~150.00 |
Height(mm) |
1.00~150.00 |
Clear Aperture |
>95% |
Parallelism |
5’ |
Surface Quality |
80/50~10/5 |
Flatness (per 25mm@633nm) |
1λ~λ/4@any 25.4mm area |
Bevel (face width x 45°) |
<0.25mm |
Lenses:
optical grade sapphire lenses are chemical and erosion resistant.
| Attribute |
Specification |
Radius |
R≥3.0 |
Centration |
≥1’ |
Diameter |
5.00~50.80mm |
Surface Figure |
5λ~λ/2 |
Surface Quality |
80/50~20/10 |
Bevel |
0.25mm at 45 deg |
Coating |
Single or Multi-layer films |
Tips:
Sapphire tips are widely used as contact tips for various surgical laser applications
| Specifications |
Material |
Optical grade sapphire |
Diameter(mm) |
0.50~300.00 |
Conical Diameter(mm) |
≥0.10 |
Diameter tolerance(mm) |
0.005 |
Surface Quality |
10/5 |
Perpendicularity |
30’ |
IPL:
IPL light guides and filters are for IPL ( intensed pulsed light) machine,
The surface quality could be S/D: 20/10, and flatness λ/10
Attribute |
Specification |
Material |
Optical grade sapphire |
Dimension Tolerance (mm) |
±0.05 |
Surface Quality |
10/5 |
Parallelism |
<1arc min |
Flatness (per 25mm@633nm) |
<λ/10 |
Bevel (face width x 45°) |
|
|
