Product type: Glass Tableware. Application: Home. Function: Heat Absorbing Glass, Heat Reflective Glass.
Overview
The Borosilicate Float Glass Sheet, Pyrex Glass Borosilicate Cover Glass for Lighting is supplied as a printed / strengthened cover glass made from Borosilicate. Listed geometry: size Customized, thickness 3.3mm, Custom, curve, flat shape. Optical / electrical data: transmittance 92%thickness≤4mm,91%thickness≥5mm. It is used in Home. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Borosilicate |
|---|---|
| Type | Glass Tableware |
| Shape | Curve, Flat |
| Size | Customized |
| Thickness | 3.3mm, Custom |
| Application | Home |
| Color | Transparent |
| Glass Type | Polycrystalline Glass |
| Function | Heat Absorbing Glass, Heat Reflective Glass |
| nd | 1.47384 |
| Light transmission | 92%thickness≤4mm,91%thickness≥5mm |
| Supplier | DONGGUAN SAIDA GLASS CO.,LTD |
Technical data
| Physical Property | |||||
| No. | Physical performance | Numerical Value | Unit | ||
| 1 | Coefficient of mean linear thermal expansion(20°C,300°C) | 3.3±0.1 | 10-6K-1 | ||
| 2 | Transformation temperature | 525±15 | °C | ||
| 3 | Softening point | 820±10 | °C | ||
| 4 | Working point | 1260±20 | °C | ||
| 5 | Density at 20°C | 2.23±0.02 | g/cm3 | ||
| 6 | Mean thermal conductivity(20°C-100°C) | 1.2 | w/m2k | ||
| 7 | Refractive index | 0.92 | 1 | ||
| Main Composition | |||||
| SiO2 | B2O3 | Na2O+K2O | Al2O3 | ||
| 81 | 13 | 4 | 2 | ||
| Chemical Property | |||||
| Hydrolytic resistance at 98°C | ISO719-HGB 1 | ||||
| Hydrolytic resistance at 121°C | ISO720-HGA 1 | ||||
| Acid resistance Class | ISO1776-First Class | ||||
| Optical Property | |||||
| Refractive: | nd : 1.47384 | ||||
| Light transmission: | 92%thickness≤4mm,91%thickness≥5mm |
What to specify when you request a quote
- Glass type and thickness — listed as “Borosilicate”; name the glass (soda-lime, aluminosilicate, borosilicate) and thickness.
- Strengthening — state thermal tempering or chemical strengthening and the required surface compression or impact rating.
- Printing and coatings — list silk-screen colours, windows, and any AR / AG / AF coating.
- Outline and edges — listed as “Curve, Flat”; send a drawing with cut-outs, holes and edge finish.
- Optical requirements — listed as “92%thickness≤4mm,91%thickness≥5mm”; give transmission, haze or gloss targets for the viewing area.
Engineering guides for this part
For material grades and coating options, see Custom Borosilicate Glass Sheets Cut to Size: Precision and Performance. How parts like this are machined and finished is covered in Precision Glass Cutting Process for Custom Components. For an application example, read Precision Laser Cut Glass Covers for Appliance LED Displays. Before sending a drawing, check Precision Glass Material Selection: Fused Silica vs Borosilicate & More. A related standard product is CCD Optical Screening Glass Plate.
