Model: 90722.
Overview
Round / Square / Rectangular Borosilicate Fire Proof Glass Sheet Custom Cut is a precision glass plate / sheet. Listed geometry: thickness 5-12mm. Optical / electrical data: transmittance Clear glass with visible light transmittance ≥91.5%, sheet resistance 3.00 H. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Construction | Single Piece Of Fireproof Glass |
|---|---|
| Model NO. | 90722 |
| Duration Of Fire Resistance | 3.00 H |
| Fire Resistance | Class A |
| Glass Materails | Borosilicate 4.0 Glass |
| Coe | 4.0×10-6K-1 |
| Property | Fire Proof Glass Panel |
| Product Name | Borosilicate 4.0 Single Piece Fire-Resistant Glass |
| Super Large Size | World maximum available size up to 4800×2440 mm, meeting large-area building glass demand |
| Light Weight | Over 8% lighter than ordinary glass with the same volume |
| High Mechanical Strength | 3 times tougher and stronger than ordinary |
| Ultra-high Light Transmittance | Clear glass with visible light transmittance ≥91.5% |
| Super Corrosion Resistance | Outstanding water resistance and chemical erosion resistance, stable in harsh environments |
| Building fireproof facilities | Fire-resistant doors, |
| Transportation industry | Train and locomotive fireproof supporting parts |
| Standard dimensions (mm) | 4800×2440 / 3660×2440 / 2440 × 1830 |
| Thickness range | 5-12mm |
| Supplier | Jinan Everest Glass Company Limited. |
Technical data
| Item | TechnicalData |
|---|---|
| Density(25℃) | 2.3 g/cm³ |
| Young'sModulus | 64 kN/mm²(DIN13316) |
| Poisson'sRatio | 0.2 |
| KnoopHardness | 560 (HK 0.1/20,ISO9385) |
| VickersHardness | 589.2 |
| Bending Strength (Tempered) | 130MPa(DIN 522922 T1) |
| Linear ThermalExpansion Coefficient(20~300℃) | 4.0×10-6K-¹ |
| SpecificHeat Capacity (20~100℃) | 0.829 J/(g·℃) |
| Thermal Shock Resistance Temperature | > 300 ℃ |
| MaxLong-term Working Temperature | 450℃ |
| Max Short-term Working Temperature | 500℃ |
| MeltingPoint | 1300℃ |
| SofteningPoint | 843.8℃ |
| AnnealingPoint | 593.2℃ |
| StrainPoint | 543.1℃ |
| RefractiveIndex | 1.47 |
| Visible Light Transmittance | ≥92% |
What to specify when you request a quote
- Material — name the glass or quartz grade.
- Outline and thickness — listed as “World maximum available size up to 4800×2440 mm, meeting large-area building glass demand”; give outline, thickness and tolerances.
- Holes, slots and features — dimension every hole and its position tolerance on the drawing.
- Edges — state edge finish and chamfer.
- Surface — state polish and flatness where they matter.
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 Optical Glass Polishing for High Clarity Surfaces. For an application example, read Custom Ultra-Thin Glass Discs for Appliance Sensor Assemblies. Before sending a drawing, check Precision Glass Material Selection: Fused Silica vs Borosilicate & More. A related standard product is Custom Ultra-Thin Quartz Glass Disc.
