Product type: Borosilicate Glass. Application: Door, Window, Heat Resistant Glass. Model: 8057. Function: Optical Function, Electromagnetic Function, Thermal Function, Biological and Chemical Function.
Overview
Borosilicate Float Glass Sheet 3.3 Glass Wafer for Sensor and Detector Window is a CCD / CMOS sensor cover glass made from Borosilicate 3.3 (Borofloat type), low thermal expansion coefficient. Listed geometry: plate shape. Temperature Heat Resistant Glass. Typical applications: Home Appliance. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Borosilicate 3.3 (Borofloat type), low thermal expansion coefficient |
|---|---|
| Type | Borosilicate Glass |
| Shape | Plate |
| Application | Home Appliance |
| Usage | Door, Window, Heat Resistant Glass |
| Model NO. | 8057 |
| Structure | Float Glass |
| Moh's Hardness | 7 |
| Function | Optical Function, Electromagnetic Function, Thermal Function, Biological and Chemical Function |
| Transparency | Transparent |
| Processing Method | Float Processing |
| Preparation Process | Float Processing |
| Color | Tranparent |
| Materials | Borosilicate 3.3 Glass |
| Temperature | Heat Resistant Glass |
| Property | Low Thermal Expansion |
| Long time (>10h) | 500℃ |
| Stock size | 1150*850mm /1700*1150mm |
| Supplier | Jinan Everest Glass Company Limited. |
Technical data
| Density (25℃) ρ | 2.23±0.02g/cm3 |
|---|---|
| Modulus of elasticity | 68kN/mm2 |
| Co-efficient of expansion(20-300℃) | 3.3±0.1×10-6 |
|---|---|
| Softening point | 820±10℃ |
| Strain point | 516±10℃ |
| Heat conductivity at 90℃ | 1.2W/mk |
| Caloricity | (20-100℃) 0.82KJ × (kg×K)-1 |
| Thermal shock resistanceStrengthening type | 180K300K |
| Identical temperature differenceStrengthening type | 100K300 K |
| Maximum working temperatureShort time (<10h):Long time (>10h): | 500℃450℃ |
| Water resistance | ISO719/DIN12111 HGB1ISO720 HGA1 |
|---|---|
| Acid resistance | ISO1776/DIN12116 1 |
| Alkali resistance | ISO695/DIN52322 A2 |
What to specify when you request a quote
- Material and grade — listed as “Borosilicate 3.3 (Borofloat type), low thermal expansion coefficient”; name the glass or crystal grade (for example JGS1, N-BK7, Borofloat 33, sapphire) because it fixes the transmission band and thermal limits.
- Diameter or outline — listed as “1150*850mm /1700*1150mm”; give the nominal size and the tolerance you can accept.
- Thickness — state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — define the usable aperture and the edge chamfer.
Engineering guides for this part
For material grades and coating options, see BOROFLOAT 33 & Alkali-Free Glass Wafers: Material Guide. How parts like this are machined and finished is covered in Precision Glass Wafer Dicing: Fused Silica & Borofloat Process Guide. For an application example, read Precision Borosilicate Glass Wafers for Appliance Sensor Components. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is 4-inch Borofloat 33 Glass Wafers.
