Engineered Quartz Solutions & Product Lineup
Direct from our manufacturing facility in Donghai to industrial hubs in Jakarta, Surabaya, Cikarang, and Morowali.
Technical Specification: Fused Quartz Crucible Science
Engineered to eliminate devitrification risks, trace metal leaching, and mechanical failure at continuous temperatures up to 1100°C.
Silicon Dioxide (SiO₂) Chemical Purity
Structural Softening Temperature Point
Linear Thermal Expansion (cm/cm/°C)
Average Technical Drawing Audit Turnaround
In high-temperature metallurgy, semiconductor ingot pulling (Czochralski process), and high-purity chemical digestion, standard refractory ceramics and conventional borosilicate glass fall short. Fused quartz crucibles manufactured by Zunex provide the structural integrity, trace-element immobility, and thermal shock resistance necessary for uncompromising industrial environments.
Synthesized via high-temperature fusion of natural ultra-pure crystalline quartz or synthetic silicon tetrachloride precursor powders, our crucibles maintain an amorphous vitreous state. This molecular configuration exhibits an exceptionally low coefficient of thermal expansion, allowing vessels to transition rapidly between ambient room temperatures and continuous furnace loads of 1100°C (or short-term thermal excursions up to 1300°C) without thermal shock fracturing or microstructural spalling.
| Physical & Chemical Metric | Standard Grade (Fused Quartz) | Synthetic Semiconductor Grade (Silica) | Testing Protocol / Compliance |
|---|---|---|---|
| Purity (SiO₂ Mass Fraction) | ≥ 99.98% | ≥ 99.999% (5N) | GDMS / ICP-OES Analytical |
| Operating Temperature (Continuous) | 1100 °C | 1150 °C | ASTM C385 Thermal Cycling |
| Softening Point (η = 10⁷.⁶ Poise) | 1683 °C | 1730 °C | ASTM C338 Standard Method |
| Hydroxyl (OH⁻) Concentration | ≤ 15 - 30 ppm | < 1 ppm (Dry) / 1200 ppm (Wet) | FTIR Optical Spectroscopy |
| Bulk Density | 2.20 g/cm³ | 2.201 g/cm³ | Archimedes Water Displacement |
| Acid Resistance (Loss in Boiling HCl) | < 0.1 mg/cm² after 24 hrs | Imperceptible leaching | ISO 1776 Chemical Durability |
For industrial buyers across Indonesia seeking bespoke geometry, our hot-working glassmakers and laser-finishing centers facilitate complex adaptations including customized lip pour spouts, dual-compartment interior dividers, extended cylindrical heights, reinforced flange bases, and ground-joint vacuum connections.
Localized Applications in Indonesia’s Industrial Landscape
Targeted thermal hardware meeting the specialized requirements of downstream resource processing, photovoltaic manufacturing, and chemical research facilities across the archipelago.
Nickel & Critical Mineral High-Purity Assay
Indonesia’s downstream processing centers in Sulawesi (Morowali) and North Maluku require high-precision laboratory digestions. Our crucibles withstand boiling nitric, hydrochloric, and perchloric acids without alkali metal contamination, ensuring accurate ICP-MS analysis of raw ore, matte, and mixed hydroxide precipitate (MHP).
Solar Ingot Growth & PV Cell Diffusion
Aligning with national solar initiatives in Batam and Kendal Industrial Parks, our arc-fused silica crucibles provide the thermal endurance needed for polysilicon casting and Czochralski monocrystalline pulling, maintaining low bubble ratios to prevent structural breach during melt cycles.
Academic & Institutional Research Labware
Supplying analytical laboratories across Universitas Indonesia (UI), Institut Teknologi Bandung (ITB), and National Research and Innovation Agency (BRIN) facilities with custom-blown quartz beakers, combustion boats, and specialized crucibles for high-temperature pyrolysis and catalyst characterization.
Semiconductor Backend Packaging in Batam
Specialized quartz boats, twin-tubes, and bell jars engineered for cleanroom chemical vapor deposition (CVD), oxidation tubes, and high-frequency annealing processes across Free Trade Zone electronics manufacturing clusters.
Precious Metal Smelting & Refining
Custom-shaped heavy-wall crucibles for precision gold, silver, and platinum induction melting across East Java and Greater Jakarta refineries. Delivers exceptional non-wetting properties against liquid precious metals, minimizing residual retention and optimizing batch yields.
Industrial Trends Shaping Indonesia's Quartz Demand
Understanding the macroeconomic and regulatory shifts driving procurement requirements for thermal fused quartz products.
1. Downstream Value Addition (Hilirisasi Industri): Indonesia’s decisive industrial shift from exporting unrefined nickel, bauxite, and copper ores to domestic smelting mandates strict assay consistency. High-throughput quality control labs require analytical-grade fused quartz crucibles capable of enduring hundreds of thermal fusion cycles with fluxing agents (such as lithium metaborate or sodium carbonate) without etching or cracking.
2. Expansion of Solar PV & Clean Energy Supply Chains: With the Indonesian government's commitment to clean energy infrastructure and local content mandates (TKDN), renewable component factories in Java and the Riau Islands are scaling cell production. This surge amplifies the regional demand for consumable quartz furnace components, high-purity ingot crucibles, and ozone-free quartz heaters.
3. Resilience Against Tropical Humidity and Saline Conditions: Tropical logistics present distinct storage hazards. Industrial coastal hubs in Indonesia subject goods to intense humidity and marine salt exposure. Standard alkali-bearing glasses suffer surface hydration and weathering; high-purity fused silica (SiO₂ > 99.99%) remains inert, resisting moisture adsorption and preventing surface degradation during transit and facility storage.
Why Procure from Zunex Quartz
Direct manufacturing capabilities, verified export compliance, and dedicated engineering oversight based in China's Silicon & Crystal Capital, Donghai.
OEM/ODM Fabrication to Drawing
Full manufacturing alignment with your PDF, DWG, DXF, or STEP mechanical files. We ensure tight dimensional tolerances, controlled wall thickness uniformity, and customized finishing for standard crucibles and specialized laboratory apparatus.
Proprietary Laser Micro-Finishing
Beyond traditional flame working, we utilize advanced CNC cold machining and precision laser drilling, grooving, and cutting. This guarantees micro-crack-free margins, clean aperture edges, and tight tolerance fitting for analytical assemblies.
Shockproof Export Packaging
Zero-breakage guarantee via specialized multilayer PE foam, internal stabilization, vacuum shrink bagging, and reinforced marine plywood crates engineered to handle multi-modal transit through Tanjung Priok or Tanjung Perak ports.
Verified ≤ 2-Hour Response Time
Every RFQ is assigned directly to an application engineer. Receive thorough feedback on material selection (JGS1, JGS2, JGS3), manufacturability audits, and formal landed price quotations within two hours.
Indonesian Procurement FAQ: Crucibles & Quartzware
Addressing essential trade compliance, customs documentation, and technical questions commonly posed by Indonesian purchasing directors.
What customs documentation (Form E, COO) is provided for importation into Indonesia?
How do you guarantee that fragile quartz crucibles arrive undamaged in Indonesia?
What is the operational distinction between JGS1, JGS2, and JGS3 quartz in crucible manufacturing?
Can Zunex accommodate small prototype batches before committing to bulk container orders?
What are the standard delivery lead times to primary industrial hubs across Java and Sumatra?
How can our engineering team verify purity to avoid crucible devitrification during high-temperature runs?
Ready to Optimize Your High-Temperature Thermal Operations?
Send your CAD files, sketches, or technical specifications. Our engineering specialists will provide a manufacturability review and a competitive quotation within 2 hours.
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