 |
|
|
http://www.stemmerich.com
|
VYCOR® (#7913)
DESCRIPTION
| VYCOR® brand glass is comparable to fused silica or quartz in performance and properties. Because of its high-temperature properties, VYCOR® brand glass can be used at continuous temperatures up to 900° and at intermittent temperatures up to 1200°. Composed of 96% fused silica with an extremely low coefficient of thermal expansion, it provides excellent thermal shock resistance. VYCOR® brand glass performs better than other glasses in the presence of acid, water and steam at low and high temperatures. In the presence of alkalis, VYCOR® brand glass performs similarly to other commercially available glass products. VYCOR® brand glass has high electrical resistivity and low dielectric loss characteristics and transmits more than 90% of both ultraviolet and infrared light. |
|
SHEET SIZES
|
Up to about 12" x 18" for thicknesses up to about 1/4".
Thicker than 1/4" are available up to about 12" x 15". |
|
|
AVAILABLE THICKNESSES
|
||
|
ROLLED
|
4.00 mm (4.0 mm - 4.8 mm) | 10.0 mm (9.5 mm - 11.3 mm) |
| 6.00 mm (6.35 mm - 8.0 mm) | 12.5 mm (12.7 mm - 15.8 mm) | |
PROPERTIES
| Refractive Index: | nd (λ = 588 nm) = 1.458 |
| Transmission (estimated at 1.0 mm thick): |
@ 225 nm 14% | @ 300 nm 80% | 400-1500 nm 90%+ |
| @ 250 nm 54% | @ 350 nm 91% |
@ 2600 nm 50%
|
| Mechanical and Thermal: |
Density | 2.18 g/cm3 |
| Young's Modulus | 6.62 x 1010 Pa | |
| Thermal Coefficient of Expansion (0-300°C) = 7.5 x 10-7 | ||
| Chemical: |
Reactant
|
Temperature
|
Wt. Loss (mg/cm2)
|
|
5% HCL (24 hr.)
|
95°
|
0.0005
|
|
|
N/50 Na2CO3 (5 hr.)
|
100°C
|
0.07
|
|
|
5% NaOH (6hr.)
|
100°C
|
0.90
|
| Electrical: | Dielectric Constant @ 20°C; 1 MHz | 3.8 |
| Dielectric Loss Factor @ 20°C; 1 MHz | 0.04% |