Application: Device, Lighting. Function: Heat Absorbing Glass, Heat Reflective Glass.
Overview
Factory Customized High-Strength Heat-Resistant Tempered Borosilicate Cover Glass: a printed / strengthened cover glass made from Borosilicate. Listed geometry: size Customized, thickness 3.3mm, Custom, square, round, disc, circle shape. Optical / electrical data: transmittance 92%thickness≤4mm,91%thickness≥5mm. Typical applications: Device and Lighting. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Borosilicate |
|---|---|
| Shape | Square, Round, Disc, Circle |
| Size | Customized |
| Thickness | 3.3mm, Custom |
| Usage | Device, Lighting |
| Function | Heat Absorbing Glass, Heat Reflective Glass |
| Technique | Tempered Glass |
| Feature | Decorative Glass |
| Structure | Solid |
| Color | Transparent, Customzied |
| 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 — listed as “Device, Lighting”; list silk-screen colours, windows, and any AR / AG / AF coating.
- Outline and edges — listed as “Square, Round, Disc, Circle”; 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 OLED Module Cover Glass: Material & Coating Guide for Precision Packaging. How parts like this are machined and finished is covered in Precision Glass Cutting Process for Custom Components. For an application example, read AR Coated Glass for Appliance Touch Screens: Specs and Selection. Before sending a drawing, check Thermal Conductivity of Quartz Glass & Fused Quartz: A Process Guide. A related standard product is CCD Optical Screening Glass Plate.
