new material
Ultra-low expansion transparent microcrystalline glass is a high-performance optical material engineered for extreme thermal stability, superior mechanical strength, and excellent transparency. Designed with a precisely controlled microcrystalline structure, it exhibits near-zero thermal expansion, minimal optical distortion, and high resistance to environmental stress. This advanced material is widely used in precision optics, aerospace instrumentation, semiconductor manufacturing, and scientific applications requiring unparalleled dimensional stability and optical clarity.
Product Overview
Ultra-low expansion transparent microcrystalline glass is a composite material made of β-quartz solid solution nano-crystals and glass phases, with an almost zero thermal expansion coefficient. This material is created by precisely controlling the microcrystallization of lithium-aluminum-silicate glass, exhibiting excellent resistance to thermal shock and high-temperature performance. Ultra-low expansion transparent microcrystalline glass is widely used in high-precision fields such as navigation systems, astronomical telescopes, and precision instruments. It fills a domestic gap in the production of high-quality ultra-low expansion transparent microcrystalline glass and has reached world-leading performance and large-scale production capacity.
Key Features
- Almost Zero Thermal Expansion Coefficient: Features an extremely low thermal expansion coefficient, making it suitable for high-end applications requiring precise dimensional control.
- Excellent Optical Transmission: With a transmission rate of over 85%, ensuring efficient light transmission in optical systems.
- Outstanding Thermal Shock Resistance: Exceptional ability to withstand rapid temperature changes without damage.
- High Bending Strength: High bending strength of up to 173 MPa, offering superior mechanical strength and durability.
- Long-Term High-Temperature Performance: Stable performance in environments up to 600°C for extended periods.
Applications
- Navigation Systems: Used in precision components such as laser gyro housings, mirrors, etc., ensuring high-precision measurements.
- Astronomical Telescopes: Used as mirror blanks for large astronomical telescopes, providing stable optical performance.
- Precision Instruments: Applied in high-precision CNC machine tools, optical gratings, and optical communication grating supports.
- High-Temperature Environments: Suitable for high-temperature observation windows and high-temperature electro-optical source glasses, offering excellent thermal stability.
- Projector Equipment: Used in high-temperature optical components such as projector lamp covers.
| Property | Value |
| Thermal Expansion Coefficient (-60~100℃) | 2.0~8.0×10⁻⁸/℃ |
| Transmittance (Sample Thickness 5mm, 0.6μm~2.0μm) | ≥85% |
| Stress Birefringence | ＜6 nm/cm |
| Bending Strength | 173 MPa |
| Long-Term Usage Temperature | 600℃ |
| Main Specifications | Maximum size φ 2500 mm × 300 mm |
| Other Specifications | Available upon customer request |
