Product type: Special Glass/High-Temperature-Resistant Glass. Application: Fireplace, Solar, Laboratory, Sight Glass, etc.. Model: HG-HG01. Function: Optical Function, Thermal Function, Mechanics and Mechanical Function, Biological and Chemical Function.
Overview
4/5mm Thermal Shock Resistant Flat/Curved High Borosilicate Tempered Flat Glass Fireplace Wood Stove Sight Window Custom Size: an appliance glass made from Borosilicate 3.3 or Borosilicate 4.0. Listed geometry: flat & curved shape. Listed for Home Appliances, Electronics and Industry applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Type | Special Glass/High-Temperature-Resistant Glass |
|---|---|
| Shape | Flat & Curved |
| Application | Home Appliances/Electronics/Industry |
| Usage | Fireplace, Solar, Laboratory, Sight Glass, etc. |
| Model NO. | HG-HG01 |
| Structure | Solid |
| Moh's Hardness | 6.5 |
| Function | Optical Function, Thermal Function, Mechanics and Mechanical Function, Biological and Chemical Function |
| Transparency | Transparent |
| Processing Method | Phase & Crystallization |
| Preparation Process | Fusion Method |
| Color | Black/Clear/White |
| Glass Type | Borosilicate 3.3 or Borosilicate 4.0 |
| Quantity | Number of Pieces or Square Meters |
| Edge & Shape | Polished Edge/Custom Shape/ Round Corners? |
| Drilling / Cutouts | Hole Size and Position (If Needed) |
| Thermal Shock | up to 700c |
| Processing | Cutting, Edging, Drilling |
| Destination Country | for Accurate Shipping Quote |
| Why Buyers Choose Our Borosilicate Glass | Extremely low thermal expansion (3.3×10-6/K) — 1/3 of ordinary glass |
| Full custom processing | cutting, drilling, edge polishing, printing, bending |
| Two Grades Available | Borosilicate 3.3 — Standard high borosilicate for industrial, laboratory, and commercial use |
| Soda-Lime Glass | Suitable for general applications with no heat exposure. Lowest cost. |
| Borosilicate Glass 3.3 | Best value for applications up to 450°C. Ideal balance of performance and price. |
| Ceramic Glass | Chosen when continuous service exceeds 500°C or thermal shock is extreme (fireplace, furnace). |
| Quartz Glass | Reserved for extreme conditions >800°C requiring ultra-high purity and optical clarity. |
| What We Do Best | Custom cut-to-size borosilicate glass sheets (any shape, any size up to 1830x2440mm) |
| Deep processing | cutting, drilling, edge polishing, silk screen printing, hot bending |
| One-stop glass solutions | from material |
| Quality Control | 100% inspection before packing — dimensions, thickness, edge quality, surface |
| Tell us | glass type, dimensions, thickness, quantity, edge/shape, application, destination. Reply within 24h. |
| Supplier | Qingdao Hitech Glass Co.,Ltd |
Technical data
| Customization Type | Details |
|---|---|
| Cut-to-Size | Any dimension based on your drawing or sample |
| Thickness | 1.5mm to 25mm — standard and non-standard |
| Shape | Rectangle, round, oval, or any custom cut shape |
| Edge Treatment | Polished edge, beveled edge, pencil edge, flat edge |
| Drilling & Cutouts | Hole drilling at any position per your drawing |
| Silk Screen Printing | Custom logo, pattern, or text on glass surface |
| Hot Bending | Curved borosilicate glass for special applications |
| Heat-Strengthened Bending | Curved tempered for enhanced safety |
| Surface Finishing | Clear, frosted, coated, printed |
| Parameter | Specification |
|---|---|
| Product Name | High Borosilicate Glass Sheet / Borosilicate 3.3 Glass |
| Glass Type | Borosilicate 3.3, Borosilicate 4.0 |
| Thickness | 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.3mm, 4.0mm, 5.0mm, 6.0mm, 8.0mm, 10mm, 12mm, 15mm, 18mm, 20mm, 22mm, 25mm |
| Max Sheet Size | 1830x2440mm (customizable) |
| SiO2 Content | 80%+ |
| B2O3 Content | 12-13% |
| Linear Thermal Expansion Coefficient | (3.3+/-0.1)x10-6/K (20-300C) |
| Density | 2.23 g/cm3 |
| Softening Point | 820C |
| Annealing Point | 560C |
| Strain Point | 520C |
| Refractive Index | 1.47 |
| Light Transmittance (2mm) | 92%+ |
| Elastic Modulus | 76 KN/mm2 |
| Thermal Conductivity | 1.2 W/(m.K) |
| Specific Heat | 0.9 J/(g.K) |
| Thermal Shock Resistance | Withstands 200C+ sudden temperature change |
| Water Resistance (ISO 719) | Grade 1 |
| Acid Resistance (ISO 195) | Grade 1 |
| Alkali Resistance (ISO 695) | Grade 2 |
| Color | Clear / Ultra-clear |
| Surface | Smooth, fire-polished or float finish |
| Shape | Flat & Curved |
| Processing Capabilities | Silk Screen Printing, Drilling & Edge Grinding, Hot Bending, Heat-Strengthened Bending (Curved Tempered) |
| Parameter | Soda-Lime Glass | Borosilicate Glass 3.3 | Ceramic Glass (Microcrystal) | Quartz Glass |
| Thermal Expansion Coefficient | ~9.0×10-6/K | 3.3×10-6/K | ~0.5×10-6/K (near zero) | ~0.5×10-6/K |
| Softening Point | ~700°C | 820°C | >950°C | ~1,650°C |
| Max Continuous Working Temp | 80°C | 450°C | 560°C | 1,100°C |
| Max Short-Term Working Temp | 120°C | 500°C | 800°C | 1,300°C |
| Thermal Shock Resistance (ΔT) | ~40°C | 200°C+ | 700°C+ | 1,000°C+ |
| SiO2 Content | ~72% | 80%+ | 60-70% (glass-ceramic) | 99.9%+ |
| Density | ~2.5 g/cm3 | 2.23 g/cm3 | ~2.6 g/cm3 | 2.2 g/cm3 |
| Typical Applications | Windows, bottles, containers | Lab equipment, fireplace windows, solar collectors, sight glass | Fireplace doors, cooktop panels, industrial furnace, wood stove | Semiconductor, UV optics, high-temp furnace, precision optics |
| Relative Cost | Low (1/4) | Moderate (2/4) | Medium-High (3/4) | Very High (4/4) |
What to specify when you request a quote
- Glass type and thickness — listed as “Borosilicate 3.3 or Borosilicate 4.0”; name the glass and thickness.
- Temperature and pressure — listed as “up to 700c”; give working temperature, thermal shock and any pressure rating.
- Strengthening and safety — state tempering, lamination or the safety standard.
- Outline and edges — listed as “Flat & Curved”; send a drawing with outline, holes and edge finish.
Engineering guides for this part
For material grades and coating options, see Borofloat 33 Glass: Material Selection for Precision Substrates. How parts like this are machined and finished is covered in How Borosilicate Glass Is Sandblasted for Matte Surface Processing. For an application example, read Why Quartz Glass Components Excel in Coffee Heating Modules. Before sending a drawing, check Thermal Conductivity of Quartz Glass & Fused Quartz: A Process Guide. A related standard product is 4-inch Borofloat 33 Glass Wafers.
FAQ
What is the 4/5mm Thermal Shock Resistant Flat/Curved High Borosilicate Tempered Flat Glass Fireplace Wood Stove Sight Window Custom Size made of? expand_more
It is listed as Borosilicate 3.3 or Borosilicate 4.0. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.
Where is this appliance glass used? expand_more
Listed applications: Home Appliances, Electronics and Industry.
What should I include in a quote request? expand_more
Include glass type and thickness, temperature and pressure, strengthening and safety and outline and edges, plus quantity and a drawing if the part is custom.
