Engineered from raw fused silica ingots with ≥99.99% SiO₂ purity, delivering exceptional thermal shock resistance (ΔT > 1100°C) and helium-tested vacuum integrity across global high-temperature applications.
Sheet quartz (fused silica glass plate) represents the pinnacle of industrial amorphous silicate engineering. Operating in extreme temperature regimes up to 1,250°C and exposed to violent thermal shocks, standard borosilicate or soda-lime glass decomposes, fractures, or devitrifies within minutes. Southeast Quartz synthesizes natural high-purity crystalline quartz veins from Donghai into continuous amorphous tetrahedral silica matrices (SiO₄), yielding an exceptional SiO₂ purity of ≥99.99%.
| Physical / Chemical Property | Southeast Quartz Sheet Standard | Industry Benchmark |
|---|---|---|
| SiO₂ Purity Concentration | ≥ 99.992% (High-Purity 4N2) | 99.95% (3N5) |
| Softening Temperature | 1,683 °C | 1,580 °C |
| Annealing Point (Stress Relief) | 1,215 °C | 1,140 °C |
| Total Heavy Metal Impurities | < 15 ppm (ICP-MS Verified) | < 50 ppm |
| Dielectric Constant (1 MHz) | 3.75 (Ultra-low loss tangent) | 4.20 - 4.60 |
| Vacuum Leakage Rating | < 1.0 × 10⁻¹⁰ mbar·L/s (He Mass Spec) | 1.0 × 10⁻⁸ mbar·L/s |
From cleanrooms running 3nm FinFET wafer fabrication to extreme photovoltaic crystal-pulling chambers, Southeast Quartz delivers precision-machined quartz sheet structures tailored to demanding production cycles.
Sheet quartz tanks, single-wafer etching lids, and flanged diffusion liners withstand boiling nitric, hydrochloric, and sulfuric acids without chemical pitting or heavy-ion leaching.
Large-aperture quartz furnace tubes and precision slotted quartz boats provide ultra-pure wafer holding during high-temperature POCl₃ diffusion and boron tribromide doping.
Synthetic and JGS1/JGS2 optical quartz sheets polished to λ/10 surface wave error serve as laser protective debris shields, high-fluence optical mirrors, and plasma viewports.
Thermally tempered, flame-polished quartz plates withstand aerodynamic friction, rapid thermal differentials across supersonic atmospheric entry, and high vacuum pressures.
Situated in Donghai County, Jiangsu Province—internationally recognized as the crystal capital and the primary quartz raw material refinement cluster on the Eurasian continent—Southeast Quartz delivers an unmatched synergy of resource access, technological agility, and high-volume cost efficiency.
Direct access to ultra-pure silica veins eliminates tier-2 material markups and guarantees uninterrupted supply chains during global commodity crunches. Raw quartz sand undergoes proprietary multi-stage flotation, magnetic separation, and hydrofluoric leaching before entering arc and plasma melting crucibles.
Our 15,000 m² clean workshop couples experienced glassmasters handling intricate manual flame lathes (forming oversized bell jars and diffusion flanges) with automated 5-axis ultrasonic machining centers capable of slotting micro-grooves with ±0.005 mm pitch repeatability.
Every vacuum flange, weld joint, and envelope undergoes helium leak testing (Pfeiffer Vacuum systems) before chemical passivation. Our internal rejection threshold is calibrated to 10⁻¹⁰ mbar·L/s, assuring zero factory leakage upon arrival at your cleanroom.
As silicon semiconductor nodes migrate past 2nm toward Gate-All-Around (GAA) architectures, and AI optoelectronic transceivers demand sub-nanometer surface planarization, Southeast Quartz continues heavy investment in synthetic CVD silica precursors and extreme UV (EUV) optical pellicle research.
The future of quartz glass manufacturing hinges on controlling atomic-level structural defects and eliminating localized refractive index gradients. Our R&D center collaborates with regional advanced material institutes to introduce continuous inductive plasma torch deposition, producing bubble-free ingots with exceptional transmission efficiency down to 193 nm ArF excimer laser wavelengths.
In parallel, our engineering group is expanding clean-room laser trepanning capabilities for ultra-thin 0.1 mm quartz ribbons, catering directly to wearable biomedical biosensors, MEMS pressure transducers, and quantum optic optical cavity blocks.
International procurement managers require rigorous documentation, dependable geometric tolerancing, and export packaging that prevents transit breakage across ocean and air corridors.
Fully compliant with SEMI E49 guidelines for ultra-pure fluid and chemical piping. All custom sheet cuts are dispatched with full material lot traceability, batch chemical ICP-MS certifications, and dimensional CMM inspection reports.
100% free of hazardous heavy metals (Pb, Cd, Hg, Cr⁶⁺, PBBs, PBDEs). Certified safe for biomedical diagnostics, culinary laboratory heating, water sterilization lamps, and medical analytical sensors.
Each sheet quartz plate and delicate furnace boat is suspended inside vacuum-sealed static-free PE pouches, surrounded by custom-molded high-density EPE foam armor, and encased inside ISPM-15 heat-treated plywood crates.
Find immediate answers regarding material purity, thermal parameters, precision machining limits, and custom sample lead times.
Explore our specialized high-temperature fused silica plates, oversized furnace tubes, and custom wafer carriers engineered for laboratory, photovoltaic, and semiconductor manufacturing lines.
Our quartz application engineers analyze thermal loads, geometric tolerances, chemical environment compatibility, and provide a manufacturing feasibility assessment within 24 hours.
