Borosilicate glass tube
Product Images
Product Property
| Product Status : | New |
| Sample Available : | yes |
| Shipment Terms : | fob,cif |
| Payment Mode : |
T/T,L/C |
Description
Specifications
Borosilicate glass tube1.OD:3mm to 350mm
2.WT:0.5mm to 10mm
3.Custom-made
Borosilicate glass tube
Physical data sheet
| No. | Physics performance | Numerical Value | Unit |
| 1 | coefficient of mean linear thermal expansion(20ºC;300 ºC) | 3.3±0.1 | 10-6 K-1 |
| 2 | Transformation Temperature | 525±15 | ºC |
| 3 | Softening point | 820±10 | ºC |
| 4 | Working point | 1260±20 | ºC |
| 5 | Density at 20ºC | 2.23±0.2 | g/cm2 |
| 6 | Mean thermal conductivity(20ºC-100ºC) | 1.2 | W/m.K |
| 7 | Refractive Index | 0.92 | l |
Chemical Composition in approximate weight %( main components)
| Item . | SiO2 | B2O3 | AL2O3 | Na2O +K2O |
| % | 81 | 13 | 2 | 3.08 |
Chemical Data:
Hydrolytic resistance at 98ºC ISO719-HGB 1
Hydrolytic resistance at 121ºC ISO720-HGB 1
water resistance Grade 1 Test method: ISO1776
Acid resistant Class Grade 1 Test method: ISO1776
