Zerodur® is a specialized glass-ceramic known for its ultra-low thermal expansion, dimensional stability, and excellent machinability, making it ideal for optics, aerospace, metrology, and scientific instrumentation. Our CNC machining processes ensure precision tolerances for applications demanding sub-micron accuracy and thermal invariance.
Zerodur is a lithium-aluminosilicate glass-ceramic developed by SCHOTT, featuring a unique microcrystalline structure with near-zero thermal expansion. It combines the polishing behavior of glass with the stability of ceramics, making it the go-to material for high-precision optical and structural components used in fluctuating or extreme thermal environments.
We offer CNC machining for high-purity sintered Zerodur®.
~6.1 – 7.6 GPa (Vickers Hardness)
~2.53 g/cm³
~1.46 W/m·K
10¹³ ~ 10¹⁴ Ω·cm
Moderate
Excellent
~100 MPa
>800 MPa
Need a specific Silicon Carbide composition? We offer custom material options tailored to your project requirements. Contact us to discuss your needs.
Trusted by over 200 successful companies around the globe.
Challenges & Solutions
Though more machinable than most ceramics, Zerodur requires careful stress management and ultra-precise toolpaths to avoid microcracks and maintain surface integrity:
Tolerances Achievable for Machined Zerodur®
Zerodur is trusted where thermal invariance, precision geometry, and chemical inertness are mission-critical.
Industries Served:
To meet strict industry standards, we offer advanced surface treatments for Zerodur® parts:
Optical surfaces with Ra < 0.01 µm.
Surface flatness < λ/10
Reduces chipping and improves assembly fit.
We prioritize operational efficiency to reduce costs and expedite delivery.
Our collaboration with diverse partners, each with unique machinery and expertise, enables us to overcome complex manufacturing challenges.
Backed by 100+ carefully vetted, closely partnered experts, we fulfill your on-demand manufacturing needs at scale.
Every part we ship is meticulously inspected in our in-house lab to ensure it meets consistent design and quality standards.
Alumina (Al₂O₃) is a durable ceramic used for high-strength, high-temperature parts in precision industries.
High fracture toughness and wear resistance.
Excellent thermal conductivity and electrical insulation.
Used for optical and semiconductor applications.
Essential for semiconductor wafer processing.
Looking for more ceramic machining options? Check out our Alumina (Al₂O₃) CNC Machining services.
Looking for high-precision Zerodur® machining? InstaVoxel delivers expert CNC machining, fast lead times, and superior quality. Contact us today to discuss your project.
