Kimble Glass Company has not produced EN-1® glass in over a decade, but now our supplier has been licensed by Kimble Glass of Vinland, New Jersey to produce this excellent Kovar sealing glass. Under the close supervision of Kimble, our supplier will melt EN-1® Glass to meet the ASTM F105-72 standard for Type 58 Borosilicate Sealing Glass. We will customize our melt to meet customer demand with exacting specifications in size ranging from .010" to .125" diameters. Contact us at sales@glassdynamicsllc.com.
| Kovar Sealing Glass: Kimble EN-1® | |||
|---|---|---|---|
Glass Code: Kimble EN-1® |
EN-1 |
||
Type |
Borosilicate |
||
Color |
Clear |
||
Principal Use |
Kovar Sealing |
||
Thermal Expansion |
Multiply by 10-7 cm/cm/°C |
0 -300°C |
47.0 |
Thermal Contraction |
25°C. to Setting Point |
64.0 |
|
Working Point |
Log Viscosity = 4 |
1115° C |
|
Softening Point |
ASTM-C-338 |
716° C |
|
Annealing Point |
ASTM-C-336 |
482° C |
|
Strain Point |
ASTM-C-336 |
437° C |
|
Density-Annealed gm/cc |
2.27 |
||
Log10 of Volume Resistivity ohm/cm |
250°C |
5.1 |
|
350°C |
7.2 |
||
Dielectric Properties (1MHz 25°C) |
Dielectric Constant |
5.1 |
|
Loss Factor % |
1.3 |
||
Refractive Index |
1.48 |
||