Custom Size Corning 7980 UV Grade Quartz Blanks
- Product Item : HYRD-Q002
- Category： Quartz Blanks
- Material: Corning 7980
- Silica purity: 99.99%
- Dimension: Custom or Standard
- Minimum Order Quantity: Negotiable
Custom Size Corning 7980 UV Grade Quartz Blanks
Corning® HPFS®7980 Fused Silica
Optical Materials Product Information
Corning 7980 is high purity non-crystalline silica glass with excellent optical qualities produced by Corning Company. The material is with extraordinary low refractive index variations leading to state-of-the-art homogeneity values, lowest birefringence values, large size capabilities, exceptional transmittance from the deep ultraviolet through the infrared region, and an ultra-low thermal expansion coefficient.
Mechanical Properties
|
Unless otherwise stated, all values @ 25 ℃ |
|
|
Elastic (Young’s) Modulus |
73 GPa |
|
Shear Modulus |
31 GPa |
|
Modulus of Rupture, abraded |
52.4 MPa |
|
Bulk Modulus |
35.9 GPa |
|
Poisson’s Ratio |
0.16 |
|
Density |
2.20 g/cm3 |
|
Knoop Hardness (100g load) |
522 kg/mm2 |
|
Tensile Strength |
54 MPa |
|
Compressive Strength |
1.14 GPa |
Thermal Properties
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Glass Code: |
7980 |
Viscosity |
|
Softening Point* |
1585 ℃ |
107.6 poises |
|
Annealing Point* |
1042℃ |
1013 poises |
|
Strain Point* |
893 ℃ |
1014.5 poises |
|
Specific Heat 0.770 J/(g K) |
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|
Thermal Conductivity 1.38 W/(m K) |
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Thermal Diffusivity 0.0075 cm2/s |
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|
Thermal Expansion** (ppm/C): |
||
|
5 ℃ to 35 ℃ |
0.52 x 10-6 |
|
|
0 ℃ to 200 ℃ |
0.57 x 10-6 |
|
|
-100 ℃ to +200 ℃ |
0.48 x 10-6 |
|
|
ASTM Procedures - *C-598, **E-228 |
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Broad Spectrum Internal Transmittance
UV Internal Transmittance
