Wafer Substrate
OEM & Custom Fabrication
High-Purity Fused Quartz Discs & Components
Engineered from refined SiO₂ crystal feedstocks with thermal stability exceeding 1100°C. Explore our inventory standards and custom fabrication capabilities deployed across Tyrolean academic, optical, and semiconductor infrastructures.
Chemical Gas
High Temp
Spectroscopy
Linear Tubing
Crucible Melt
Sight Glass
Furnace Core
Regional Application Engineering
Specialized Applications in the Innsbruck & Tyrolean Tech Ecosystem
Innsbruck is not merely a crossroads of Central European trade; it is an internationally recognized nexus for quantum physics, photonics, cryogenic engineering, and clean-tech metallurgy. Our quartz glass discs serve specific mission-critical challenges unique to the Alpine engineering cluster.
Quantum Optics & Laser Trapping Viewports
Affiliated researchers at the University of Innsbruck and regional spin-offs operate ultra-high vacuum (UHV) chambers requiring optically flat discs (λ/4 to λ/10 surface accuracy). Our double-side polished synthetic fused silica discs provide near-zero wave-front distortion, minimal birefringence, and deep UV-to-NIR transmission required for ion-trap optical access windows.
High-Altitude Cryogenic Sight Glasses
Given the sub-atmospheric laboratory baseline pressures in high-elevation Tyrol test centers, viewports undergo steep thermal and mechanical differentials. With a thermal expansion coefficient of just 5.5 × 10⁻⁷/°C, our fused quartz circular discs maintain hermetic pressure seals across cryogenic helium baths (-269°C) transitioning to rapid ambient warming without micro-fracturing.
Alpine Chemical & High-Temperature Metallurgy
Refractory metal processors and environmental monitoring laboratories along the Inn Valley demand chemical isolation. Transparent quartz inspection discs resist devitrification under aggressive acidic atmospheres, providing inert furnace sight glasses capable of sustained 1100°C operation in induction furnaces and catalytic gas analysis cells.
Material Science Brief
Why Tyrolean Engineers Specify Kemzo Fused Quartz Over Borosilicate
Standard borosilicate glass (such as DIN ISO 3585) softens near 560°C and carries a thermal expansion coefficient roughly six times higher than fused quartz. In precision optical and furnace conditions, borosilicate experiences dimensional drift, focal shift, and thermal failure.
Our discs are formed from ultra-refined high-purity natural quartz sand and synthetic tetrachloride precursors. By eliminating transition metal dopants (Fe, Cu, Ti < 1.0 ppm aggregate), we ensure minimal UV absorption at 254nm and exceptional resistance to hydroxyl absorption peaks in the near-infrared spectrum.
Annealed systematically within computer-controlled kilns, every disc leaves our factory free of permanent shear stresses, ensuring precise CNC drilling, chamfering, and stepped-flange sealing for specialized vacuum clamp systems.
| Physical Property | Standard Value | Operational Impact |
|---|---|---|
| Chemical Formula | SiO₂ (≥99.99%) | Zero sample poisoning in cleanrooms |
| Continuous Temp Limit | 1100 °C | Surpasses standard kiln requirements |
| Softening Point | 1683 °C | Retains structural rigidity under extreme heat |
| Thermal Expansion (20-300°C) | 5.5 × 10⁻⁷ /°C | Immunity to rapid thermal shock/quenching |
| Refractive Index (n_d) | 1.4585 | Consistent optical path and low dispersion |
| Dielectric Constant (1 MHz) | 3.75 | Minimal loss in microwave/RF processing |
99.99%
SiO₂ Material Purity
1450°C
Peak Thermal Tolerance
±0.02mm
Precision Machining Limit
≤ 1 Hour
Innsbruck RFQ Turnaround
Macro Market Outlook
Procurement Trends Across the Tyrolean Advanced Tech Corridor
Strategic supply chain dynamics are shifting across Austria, Germany, and Northern Italy. Procurement directors are restructuring high-performance glass sourcing along three core axes.
Direct Factory Customization vs. Catalog Stock
Research facilities increasingly reject standardized optical stock catalogs that incur lengthy modification delays. Buyers require direct factory relationships offering custom step-grinding, water-jet slicing, and edge chamfering made to custom CAD drawings with short lead times.
Supply Security & Raw Material Traceability
With geopolitical disruptions affecting European precision foundries, engineering teams across Innsbruck prioritize suppliers situated directly adjacent to virgin crystal mines. Direct access to raw silica guarantees stable lot-to-lot refractive indexing and chemical compliance.
Green Photonics & Clean Energy Transition
As Tyrol advances regional sustainability mandates, manufacturing partners demand components with higher longevity under aggressive UV and plasma exposure, minimizing maintenance shutdowns in regional solar photovoltaic and microelectronic research institutes.
Why Choose Kemzo
Source-Region Manufacturing Backed by Global Standards
Founded in 2011 in Donghai—the world-renowned crystal capital—Donghai Kemzo Quartz Products Co., Ltd. combines geographic raw material leverage with rigorous ISO 9001 certified optical processing.
Source Location Control
Located at the epicenter of natural quartz deposits in Lianyungang, we selectively screen incoming silica crystals, locking down chemical purity and ensuring consistent supply without third-party trading markups.
10+ Dedicated Lines
From tube redrawing and crucible molding to fine disc grinding and optical double-side polishing, our continuous production facilities handle prototype runs and volume output ranging between US$10M and US$50M annually.
Certified Quality & High-Tech Credential
Certified under ISO 9001 and recognized as a Jiangsu High Technology Enterprise, our on-site checked facilities enforce microscopic bubble-line sorting and laser interferometric surface verification.
Global Export & Custom Cradling
Exporting over 70% of our products worldwide, we utilize custom multi-layer foam cutouts and heavy-duty, reinforced wooden export crates engineered specifically for shock-free transit via air or rail freight directly to Austrian docks.
Purchasing & Technical Queries
Frequently Asked Questions by Tyrolean Buyers
Essential information regarding material classification, customs processing, tolerances, and express delivery protocols into the Austrian market.
How do fused quartz discs compare with synthetic fused silica for optics in Innsbruck?
Natural fused quartz is manufactured by melting high-grade natural SiO₂ sand crystals. It provides excellent mechanical stability, low thermal expansion, and great visible-to-infrared transmission at a highly competitive cost for general viewports and furnace tubes. Synthetic fused silica is synthesized via chemical vapor hydrolysis of silicon precursors (e.g., SiCl₄); it offers virtually zero metallic impurity levels, exceptional deep ultraviolet (DUV) clarity down to 185nm, and zero laser-induced fluorescence, making it the preferred choice for advanced quantum optics labs at the University of Innsbruck.
What dimensional tolerances can you maintain for custom circular discs?
For standard CNC edged and flat-ground discs, our standard outer diameter (OD) tolerance is ±0.05 mm, with thickness held to ±0.05 mm. For high-precision optics and viewport assemblies, our double-side optical lapping and polishing lines achieve diameter tolerances down to ±0.01 mm, surface parallelism <3 arc seconds, and surface flatness within λ/4 to λ/10 per 25mm aperture.
What are the standard Incoterms and customs clearance procedures for Austria?
We routinely operate under DAP (Delivered at Place, Innsbruck facility), DDU, CIF, and FOB terms. We supply commercial invoices with precise HS code classifications (typically 7002.31 or 7002.39), packing lists, Certificate of Origin, and raw material purity test certificates (CoA). Deliveries transit smoothly through Austrian customs directly to your receiving dock.
How do you guarantee fragile quartz discs arrive intact after international transit?
Every disc is individually wrapped in optical tissue or sealed in dust-free vacuum bags, layered in impact-absorbing EPE custom molded foam cells, packed into rigid internal cartons, and housed inside reinforced export-grade wooden cases. With over a decade of international freight handling, our global shipping transit break rate remains below 0.1%. In the unlikely event of transit damage, replacements are dispatched immediately under priority warranty.
Can we obtain sample discs for spectral verification before initiating volume production?
Yes. We actively encourage pre-production evaluation. We can ship sample discs machined to your specific diameter, thickness, and edge finish via DHL/FedEx priority air directly to Innsbruck within 5 to 7 business days, allowing your team to complete spectrophotometer, stress, and thermal test validation.
What currencies and payment schedules are available for Austrian commercial partners?
We conduct business directly in EUR (€), USD ($), and other major currencies. We support secure payment methods including Wire T/T, Irrevocable Letters of Credit (L/C at sight) for larger contracts, and verified commercial processing channels. Established academic research institutions and recurring corporate partners in Western Austria can apply for flexible credit accounts upon verification.
Request Engineering Review & Quotation for Innsbruck Delivery
Send your CAD files, sketches, or technical specifications to our technical desk. Our applications team typically confirms tolerances, pricing, and freight estimates within 60 minutes during global business hours.
Contact Us