3.3 Borosilicate Glass offers excellent thermal stability, low thermal expansion, high temperature resistance up to 550℃, and strong chemical durability. Available in customized sizes and thicknesses, it is widely used for industrial and precision glass applications.
3.3 Borosilicate Glass is a high-performance specialty glass material known for its excellent thermal stability, chemical resistance, and optical transparency. The "3.3" designation refers to its extremely low thermal expansion coefficient of approximately 3.3×10⁻⁶/K, which allows the glass to maintain excellent dimensional stability under rapid temperature changes.
Compared with ordinary glass, 3.3 Borosilicate Glass provides superior resistance to thermal shock, high temperatures, and chemical corrosion. It is widely used in industrial applications where reliable performance, long service life, and high transparency are required.
Qingdao Vatti Glass manufactures and supplies customized 3.3 Borosilicate Glass with different sizes, thicknesses, shapes, and precision processing options. With professional production capabilities and advanced glass processing equipment, we provide reliable solutions for industrial equipment manufacturers, engineering companies, and global distributors.
3.3 Borosilicate Glass is a type of specialty glass mainly composed of silica and boron trioxide. The addition of boron oxide significantly reduces the thermal expansion coefficient, improving the glass's ability to withstand temperature changes without cracking or deformation.
The low expansion rate of 3.3×10⁻⁶/K makes this material one of the most widely used heat-resistant glasses for industrial applications. It provides excellent mechanical stability, chemical durability, and optical performance under demanding working conditions.
The main characteristics of 3.3 Borosilicate Glass include:
· Low thermal expansion coefficient
· Excellent thermal shock resistance
· High temperature stability
· Superior chemical resistance
· High light transmission
· Excellent electrical insulation performance
· Long service life under harsh environments
Excellent Thermal Resistance
3.3 Borosilicate Glass is designed for high-temperature environments and can operate at temperatures up to approximately 500-550℃ depending on application conditions.
Its low coefficient of thermal expansion minimizes internal stress caused by temperature fluctuations, allowing the glass to maintain structural stability during heating and cooling cycles.
Outstanding Thermal Shock Resistance
One of the most important advantages of 3.3 Borosilicate Glass is its excellent thermal shock resistance.
The material can withstand sudden temperature differences better than conventional glass, reducing the risk of cracking caused by rapid heating or cooling.
This makes it suitable for equipment exposed to frequent temperature changes, heating processes, and high-temperature observation applications.
Excellent Chemical Resistance
3.3 Borosilicate Glass offers excellent resistance against most acids, alkalis, and chemical substances.
Except for hydrofluoric acid and highly concentrated alkaline solutions under certain conditions, the material maintains stable performance in many corrosive environments.
This chemical durability makes it suitable for laboratory equipment, chemical processing systems, and industrial observation components.
High Optical Transparency
With light transmission reaching up to 92% for thinner glass, 3.3 Borosilicate Glass provides excellent visibility and optical clarity.
The high transparency allows operators to clearly observe internal conditions in industrial equipment, optical systems, and testing instruments.
Reliable Electrical Insulation
Borosilicate glass has excellent dielectric properties and stable electrical insulation performance.
Compared with ordinary glass, it provides improved insulation reliability, making it suitable for electrical and precision equipment applications requiring transparent insulating materials.
Stable Mechanical Performance
The excellent dimensional stability of 3.3 Borosilicate Glass allows it to maintain precise shapes and sizes during long-term operation.
It is suitable for applications requiring accurate dimensions, consistent performance, and reliable service life.
Feature | 3.3 Borosilicate Glass | Ordinary Glass |
Thermal Expansion Coefficient | Approx. 3.3×10⁻⁶/K | Higher |
Thermal Shock Resistance | Excellent | Limited |
Temperature Resistance | Up to 500-550℃ | Lower |
Chemical Resistance | Excellent | Moderate |
Optical Transparency | High | Good |
Dimensional Stability | Excellent | Lower |
Industrial Application | Widely used | Limited |
Due to its superior thermal and chemical performance, 3.3 Borosilicate Glass is preferred for industrial applications where standard glass cannot meet performance requirements.
Item | Specification |
Product Name | 3.3 Borosilicate Glass |
Material Type | High Borosilicate Glass |
Available Thickness | 2-30mm |
Size | Customized |
Shape | Customized |
Maximum Working Temperature | ≤550℃ |
Thermal Expansion Coefficient (20-300℃) | 3.3±0.1×10⁻⁶/K |
Softening Point | 820±10℃ |
Thermal Shock Resistance | ≥125K |
Refractive Index (nd) | 1.47384 |
Light Transmission | 92% (Thickness ≤4mm), 91% (Thickness ≥5mm) |
Industrial Observation Windows
3.3 Borosilicate Glass is widely used for industrial viewing windows, allowing operators to monitor equipment operation under high temperature and harsh conditions.
Its excellent transparency and thermal stability make it suitable for pressure equipment, processing systems, and industrial machinery.
Optical Components
Due to its high transparency and dimensional stability, this glass is used in optical windows, inspection systems, and precision instruments requiring reliable optical performance.
Laboratory Equipment
The chemical resistance and thermal stability of 3.3 Borosilicate Glass make it suitable for laboratory equipment exposed to temperature changes and chemical materials.
High Temperature Equipment
This material is commonly applied in furnaces, heating systems, and other high-temperature equipment requiring transparent and heat-resistant glass components.
Industrial Glass Components
Customized 3.3 Borosilicate Glass can be processed into different shapes and sizes for industrial equipment manufacturers and engineering applications.
Precision Instruments
The excellent optical and mechanical properties make it suitable for instrument covers, protective windows, and special glass components.
Qingdao Vatti Glass provides customized manufacturing services for 3.3 Borosilicate Glass according to customer drawings, specifications, and application requirements.
Available processing options include:
· Customized cutting
· Edge grinding
· Polishing
· CNC machining
· Precision shaping
· Customized thickness and dimensions
With professional glass processing equipment and experienced technicians, we can provide accurate glass solutions for different industrial applications.
Quality and consistency are essential for industrial glass applications. Qingdao Vatti Glass follows strict quality management procedures throughout production.
Our quality control includes:
· Raw material inspection
· Dimension checking
· Surface quality inspection
· Thickness tolerance control
· Final inspection before shipment
We are committed to providing stable-quality 3.3 Borosilicate Glass products for customers worldwide.
To ensure safe delivery, our glass products are professionally packed according to export requirements.
Packaging solutions include:
· Protective film
· Shock-resistant materials
· Customized cartons
· Export wooden cases
With extensive international shipping experience, we support customers from different regions with reliable delivery services.
Professional Special Glass Manufacturer
Qingdao Vatti Glass specializes in manufacturing special glass products, including borosilicate glass, quartz glass, ceramic glass, and other high-performance glass materials.
Customized Industrial Solutions
We provide flexible customization options based on customer requirements, including size, thickness, shape, and precision processing.
Global Export Experience
Our products are supplied to customers in North America, Europe, Asia, the Middle East, and other international markets.
With professional manufacturing capabilities and strict quality control, we support long-term cooperation with global industrial customers.
What is 3.3 Borosilicate Glass?
3.3 Borosilicate Glass is a specialty glass material containing silica and boron trioxide. It features a low thermal expansion coefficient of approximately 3.3×10⁻⁶/K, providing excellent thermal stability and chemical resistance.
Why is 3.3 Borosilicate Glass resistant to thermal shock?
The low thermal expansion coefficient reduces internal stress during temperature changes, allowing the glass to withstand rapid heating and cooling better than ordinary glass.
What temperature can 3.3 Borosilicate Glass withstand?
Depending on application conditions, 3.3 Borosilicate Glass can be used at temperatures up to approximately 500-550℃.
Can 3.3 Borosilicate Glass be customized?
Yes. Qingdao Vatti Glass provides customized sizes, thicknesses, shapes, and processing services according to customer requirements.
What thicknesses are available?
The available thickness range is generally from 2mm to 30mm, with customized options available.
What is the difference between borosilicate glass and ordinary glass?
Borosilicate glass has lower thermal expansion, better thermal shock resistance, higher temperature resistance, and stronger chemical durability compared with ordinary glass.
Do you provide precision processing services?
Yes. We provide cutting, grinding, polishing, CNC machining, and other precision processing services for customized glass components.
What industries use 3.3 Borosilicate Glass?
It is widely used in industrial equipment, optical instruments, laboratory systems, high-temperature equipment, and other applications requiring heat-resistant transparent materials.
Qingdao Vatti Glass provides a wide range of specialty glass products for industrial, high-temperature, and precision applications. Explore our related glass solutions, including borosilicate glass sheets, sight glasses, glass discs, and other customized glass products designed for different working environments.