
Company Information
Ask for more detail from the seller
Contact SupplierBorosilicate Glass
Physical Data
| No. | Physical Performance | Data | Unit |
| 1 | Coefficient of mean linear thermal expansion(20 ) | 3.3 +/- 0.1 | |
| 2 | Transformation temperature | 525 +/- 15 | |
| 3 | Softening point | 820 +/- 10 | |
| 4 | Working point | 1260 +/- 20 | |
| 5 | Density at 20C | 2.23 +/- 0.02 | |
| 6 | Mean thermal conductivity( ) | 1.2 | |
| 7 | Refractive index | 0.92 |
Chemical Composition
| SiO2 | B2O3 | Na2O+K20 | AL2O3 |
| 81 | 13 | 4 | 2 |
Chemical Data
| Hydrolic resistance at 98C | ISO719-HGB 1 |
| Hydrolic resistance at 121C | ISO720-HGA 1 |
| Acid resistance Class | ISO1776-First Class |