Low Expansion Glass / Low-CTE Glass (Precision Solutions)

Low expansion glass (Low-CTE) is engineered for applications where even the slightest change in size due to temperature can ruin a project’s accuracy. Whether you need material for a precision lens, a laser component, or a laboratory standard, we provide the raw material and the precision machining to meet your tolerances.

We specialize in processing Borosilicate, Quartz, and Ultra-Low Expansion Glass-Ceramics into finished parts

Materials We Work With

Depending on how much thermal stability your project requires, we offer several options:

Borosilicate Glass (3.3): The industry standard for general heat resistance and low expansion.
Fused Silica / Quartz: Extremely low expansion with excellent UV and IR transparency.
Zero-Expansion Glass-Ceramic: Designed for near-zero expansion (close to 0 x 10⁻⁷/°C). Remains stable even under extreme temperature fluctuations.

Products We Have Custom-Made (Real-World Use)

Our clients use our low-expansion glass for high-precision components, including:

Optical Mirrors & Lenses: Substrates for telescopes and laser systems that must stay perfectly shaped.
Semiconductor Wafers & Carriers: Stable platforms for chip manufacturing and lithography.
Precision Calibration Scales: Reference standards and measurement rules that cannot expand or contract.
Laser Cavity Components: Highly stable spacers and frames for laser equipment.
Space & Aerospace Parts: Window panels and structural components for satellites and high-altitude sensors.
3D Metrology Plates: Flat, stable surfaces used in high-end inspection and measuring machines.

Our Precision Machining Capabilities

Working with low-expansion materials requires high-precision equipment to avoid stress and maintain tolerances. Our shop provides:

High-Precision Grinding: Achieving flat surfaces and exact thicknesses for optical-grade parts.
Optical Polishing: Surface finishing to meet specific roughness and clarity requirements.
CNC Micromachining: Drilling micro-holes, milling slots, and creating complex geometries.
Water-jet & Laser Cutting: Fast and accurate shaping for custom-sized plates and discs.
Edge Chamfering: Smoothing edges to prevent chipping and improve structural integrity.
Thin-Film Coating: Applying AR (Anti-Reflective) or reflective coatings to finished parts.

Tell Us About Your Tolerances

We understand that with low-expansion glass, precision is everything. We support both one-off prototyping for research and volume production for industrial manufacturers.

Ready for a quote? Please send us your drawings (DWG, DXF, or PDF) along with your required tolerances and the operating temperature range. Our engineers will review your specs and provide a technical quote within 24 hours.