サファイア

Supply Forms |
Thicknesses |
Dimensions |
---|---|---|
Customized processing
|
from 1 mm to 40 mm | Ø from 10 to 300 mm from 10 to 210 mm |
Plano surface Spherical surface |
||
Various shapes from round to square |
Attribute | Commercial Quality | Precision Quality | Ultra-Precision Quality |
---|---|---|---|
Size (round and square) | Ø from 10 to 300 mm from 10 to 210 mm | ||
Size tolerance1 | ± 0.2 mm | ± 0.10 mm | ± 0.05 mm |
Thickness1 | From 1 to 40 mm | ||
Thickness tolerance1 | ± 0.2 mm | ± 0.10 mm | ± 0.05 mm |
Parallelism1 | < 5 arc minutes | < 1 arc minute | < 30 arc seconds |
Surface accuracy (PV)1 | 5 λ (546 nm) | λ/2 (546 nm) | λ/10 (546 nm) |
Surface quality (scratch & dig) | According to MIL 80 - 50 | According to MIL 40 - 20 | According to MIL 20 – 10 |
Surface roughness (Rq) | < 10 nm | < 3 nm | < 1 nm |
AR coating | Custom-designed | ||
Order quantity | Depending on customer specifications. Please contact us. | ||
Delivery time (weeks) | 6 - 10 weeks, assuming raw materials are available. |
Mechanical Properties2 |
||
---|---|---|
Tensile strength | 40,000 – 60,000 psi (design criterion) | 0.27 – 0.41 GPa |
Flexural strength | 70,000 –130,000 psi (design criterion) | 0.48 – 0.89 GPa |
Young’s modulus, E (25 °C) (modulus of elasticity) |
50 x 106 psi | 345 GPa |
Compressive modulus, K | 55 x 106 psi | 379 GPa |
Flexural modulus (modulus of rupture) |
52 x 106 psi | 358 GPa |
Shear modulus, G (modulus of rigidity) |
21.5 x 106 psi | 148 GPa |
Bulk modulus, k (volumetric modulus of elasticity) Poisson’s ratio |
35 x 106 psi 0.29 |
241 GPa |