Schott Quartz Glass Microcrystalline Plate for Extreme Demanding Applications -TOQUARTZ®
Schott quartz glass microcrystalline plate is processed to creates uniform precipitation of microcrystals throughout the glass matrix, forming a dense multi-phase composite that combines the outstanding properties of both quartz glass and crystalline materials. It has superior chemical inertness and excellent thermal resistant properties.
Properties of Schott Quartz Glass Plate
Schott quartz glass microcrystalline plates are created through a specialized manufacturing process where nucleating agents are added to specially formulated base glass, then subjected to controlled crystallization heat treatment.
Superior Thermal Properties
- Operating temperature up to 1100°C
- Low thermal expansion coefficient (72×10⁻⁷/°C)
- Thermal conductivity: 1.71 W/m.K at 25°C
Mechanical Strength
- Flexural strength >108 MPa
- Compressive strength >508 MPa
- Impact resistance >2.56 KJ/m²
- Mohs hardness 4-5
Electrical Performance
- Volume resistivity: 1.08×10¹⁶ Ω·cm at 25°C
- Dielectric constant: 6-7
- Low dielectric loss: 1-4×10⁻³
- Breakdown strength: >40 KV/mm
Chemical Stability
- Resistance to acids, alkalis, and salts
- Low 5% NaOH corrosion rate: 0.85 mg/cm²
- Low 5% HCl corrosion rate: 0.26 mg/cm²
- Excellent thermal shock resistance
- High Mechanical Strength
- Superior anti-hydration properties
Material Specifications & Dimensions of Quartz Glass Plate
TOQUARTZ® Schott quartz glass microcrystalline plates are available in multiple standard dimensions with customizable thickness, and also clear and opaque on options to meet your specific application requirements.
Size of of Quartz Glass Plate
| Schott quartz glass microcrystalline plates | ||
| Model | Dimensions (L×W mm) | Thickness (mm) |
| AT-WJ-B1001 | 100×100 | 3 |
| AT-WJ-B1002 | 300×300 | 4.0-8.0 |
| AT-WJ-B1003 | 330×330 | 4.0-8.0 |
| AT-WJ-B1004 | 400×400 | 4.0-8.0 |
| AT-WJ-B1005 | 500×500 | 4.0-8.0 |
| AT-WJ-B1006 | 720×500 | 4.0-8.0 |
| AT-WJ-B1007 | 1200×800 | 4.0-8.0 |
| AT-WJ-B1008 | 1950×1100 | 4.0-8.0 |
Material Specifications of Schott Quartz Glass Plate
| Material Properties | ||
| Property | Value | Notes |
| Density | 2.6 g/cm³ | Archimedes method |
| Apparent porosity | 0.07% | / |
| Water absorption | 0 | / |
| Long-term use temperature | 800°C | Continuous operation |
| Surface roughness | Ra≤0.01μm | After polishing |
TOQUARTZ® Solving Challenges with Schott Quartz Glass Plate
Schott Quartz Glass Plate in Laboratory Equipment
With a thermal expansion coefficient as low as 72×10⁻⁷/°C and zero water absorption, these plates ensure precise performance in high-temperature, high-humidity, and chemically aggressive environments such as microwave digestion systems and acid vapor chambers.
Key Advantages
- Dimensional change under 200°C thermal cycling is <0.02%, ensuring consistent calibration in analytical instruments.
- Absorption rate = 0%, preventing surface swelling or microcrack formation in high-humidity lab environments.
- Corrosion rate in 5% HCl at 95°C for 24h is only 0.26 mg/cm², suitable for acid digestion and sterilization chambers.
- Dielectric constant remains 6–7 across 25–200°C, ensuring signal integrity in lab sensors and measurement platforms.
TOQUARTZ® solution
A German lab equipment OEM reported 12% failure rate due to microcracks in high-humidity acid vapor chambers.
TOQUARTZ® plates with 0% water absorption and 0.26 mg/cm² HCl corrosion rate reduced failure to <1% over 6 months.
Schott Quartz Glass Plate for Industrial Heating Systems
With a flexural strength >108 MPa and thermal conductivity of 1.71 W/m·K, they are ideal for infrared heaters, furnaces, and thermal processing lines requiring both mechanical durability and uniform heat distribution.
Key Advantages
- Plates maintain structural integrity at 1100°C with flexural strength >108 MPa, suitable for load-bearing heating platforms.
- Thermal conductivity of 1.71 W/m·K ensures even temperature distribution across large surface areas, reducing thermal gradients.
- Coefficient of 72×10⁻⁷/°C minimizes warping in repeated heating cycles, critical for furnace door panels and IR heater covers.
- Impact toughness >2.56 KJ/m² prevents cracking from mechanical shocks during thermal cycling.
TOQUARTZ® solution
A U.S. furnace manufacturer faced 8-week delays due to cracking in large-format heater panels.
TOQUARTZ® delivered custom 1200×800mm plates with <±0.2mm tolerance and 1.71 W/m·K conductivity in 12 days, eliminating downtime and saving $15,000 in penalties.
Schott Quartz Glass Plate for Optical Instruments
These properties are essential for laser platforms, spectrometers, and optical alignment systems where even micron-level distortion can affect measurement accuracy.
Key Advantages
- Polished to Ra ≤ 0.01μm, enabling high-precision light transmission and minimal scattering in laser alignment systems.
- Plates maintain <0.05 mm warpage after 1000°C thermal cycling, ensuring optical path stability in high-power laser setups.
- Dielectric loss remains 1–4×10⁻³ across 25–200°C, reducing signal noise in optoelectronic interfaces.
- Outgassing rate of 8.8×10⁻⁹ ml/s·cm² after 8h vacuum bake-out supports cleanroom and vacuum optical systems.
TOQUARTZ® solution
A Japanese spectrometer OEM reported 18% rejection due to surface warping >0.1mm post-thermal alignment.
TOQUARTZ® plates with <0.05mm warpage and Ra ≤ 0.01μm finish reduced rejection to 0.3%, improving optical calibration accuracy.
Customization Services for TOQUARTZ® Schott Quartz Glass Plate
TOQUARTZ® Process Capabilities
Material selection and specifications
- Precision cutting with ±0.2mm tolerance
- Custom shapes (round, square, irregular)
Surface Treatments
- Polished finish (Ra≤0.01μm)
- Ground finish for specific light diffusion
- Sand-blasted surface for increased adhesion
- Custom silk screening in various colors
Edge & Corner Treatments
- Beveled edges for safety and aesthetics
- Rounded corners (standard or custom radius)
- Step edges for specialized mounting
- Chamfered edges for stress reduction
Drilling & Machining
- Precision hole drilling (any diameter)
- Complex cutouts and internal features
- Threaded inserts and mounting provisions
- Multi-level machining for complex geometries
TOQUARTZ® Engineering Support
Material selection and specifications
Design optimization for thermal performance
CAD/CAM support for complex designs
Prototype development and testing
Technical documentation and certification
Usage Guidelines for Schott Quartz Glass Plate
Handling & Storage
- Store plates in a clean, dry environment
- Handle with clean gloves to prevent surface contamination
- Support plates evenly during transport to prevent stress
- Avoid direct contact between plates (use separators)
- Keep away from strong impact or concentrated pressure
Thermal Cycling
- Limit heating/cooling rates to <10°C/minute for large plates
- Allow uniform temperature distribution during heating
- Avoid direct flame impingement on single spots
- Consider thermal expansion in application design
- Pre-heat thick plates gradually to prevent thermal stress
Installation Guidelines
- Ensure mounting surfaces are clean and flat
- Allow for thermal expansion in mounting designs
- Avoid rigid clamping that may induce stress
- Use appropriate gaskets for sealing applications
- Follow recommended torque specifications for fasteners
Cleaning & Maintenance
- Clean with mild detergent and distilled water
- For stubborn residues, use alcohol or acetone
- Avoid abrasive cleaners that may scratch surfaces
- Periodically inspect for cracks or damage
- Replace plates showing signs of stress or damage
Ready to upgrade your equipment?
Why Partner with TOQUARTZ
Direct Factory Advantage
As a direct manufacturer, we can cut out the numerous intermediate links.
Engineering Expertise
Technical team guides clients from material selection to design optimization, translating specs into deliverables.
Flexible Manufacturing
Handling standard & custom orders via small-batch expertise and prototyping rigor to meet urgent deadlines.
Quality
Assurance
Pre-shipment 3-step validation:
1. dimensional accuracy,
2. material purity ,
3. performance thresholds
Global Supply Chain
Reliable global logistics to industrial hubs (DE/US/JP/KR priority) with trackable milestones.
Releted Products
As a specialized manufacturer with direct factory capabilities, TOQUARTZ provides both standard and custom quartz solutions with engineering support throughout the specification and implementation process.
FAQ
Q: What is a quartz glass microcrystalline plate?
A: A quartz glass microcrystalline plate is created by adding nucleating agents to specially formulated base glass, then subjecting it to controlled crystallization heat treatment. This process creates a uniform precipitation of microcrystals throughout the glass matrix, forming a dense multi-phase composite that combines excellent thermal, mechanical, and chemical properties.
Q: What is the maximum continuous operating temperature for Schott quartz glass microcrystalline plates?
A: TOQUARTZ® Schott quartz glass microcrystalline plates can withstand continuous operation at 800°C and intermittent exposure up to 1100°C. The material maintains its mechanical properties and dimensional stability throughout this temperature range.
Q: How do microcrystalline quartz glass plates compare to regular quartz glass?
A: Microcrystalline quartz glass plates offer superior thermal shock resistance, lower thermal expansion, better chemical resistance, and higher mechanical strength compared to regular quartz glass. The microcrystalline structure provides enhanced stability and durability for demanding applications.
Q: How does thermal cycling affect the lifespan of Schott quartz glass microcrystalline plates?
A: TOQUARTZ® Schott quartz glass microcrystalline plates are engineered to withstand repeated thermal cycling with minimal degradation. Their low thermal expansion coefficient (72×10⁻⁷/°C) minimizes thermal stress during heating and cooling cycles, resulting in extended service life compared to conventional materials.
Q: What colors are available for Schott quartz glass microcrystalline plates?
A: Standard colors include light brown, milky white, transparent, and black. Custom colors may be available for specific applications with minimum order quantities. Please consult with our sales team for special color requirements.
Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.