In the global high-end quartz industry, Heraeus Conamic (Germany) is widely recognized as the technology benchmark, and its HSQ series electrically fused natural quartz sets the standard for advanced semiconductor manufacturing, precision optics and specialty fiber applications. From HSQ300 to HSQ330, HSQ330S and HSQ400, each grade is engineered for different levels of process rigor, matching scenarios from general high-end use to extreme precision.
For customers outside Europe, Heraeus premium quartz often comes with two major pain points: first, the wide range of grades and detailed specifications make material selection difficult, often leading to either insufficient performance or unnecessary cost overkill; second, premium grades demand extremely high fabrication precision and cleanliness, which most fabricators cannot deliver consistently, wasting high-value raw material.
As a professional high-precision quartz fabricator based in Donghai, China’s quartz industry hub, JiuRui Quartz works closely with official authorized Heraeus channels to provide finished component fabrication for the full HSQ300 / HSQ330 / HSQ330S / HSQ400 series. We cover tubes, plates, rods and custom precision parts, delivering one-stop service from material traceability to finished product delivery, maximizing the performance of premium raw materials. Compare all 4 global quartz brands | See HSQ300 capillary details
Heraeus HSQ Series: Grade Positioning & Key Differences
The HSQ series is Heraeus’ premium line of electrically fused natural quartz, produced from high-purity natural crystalline silica via arc fusion with strict quality control. Overall purity, defect control and batch consistency are among the best in global natural quartz. The four grades form a clear performance ladder for different levels of application rigor.
1. HSQ300: Premium Semiconductor Workhorse Grade
HSQ300 is the most widely adopted premium grade in the HSQ lineup, positioned as a direct equivalent to Momentive GE124. It features low defects and high cleanliness, and is the standard matching material for European and American high-end semiconductor equipment.
- Key features: Total metal impurities ~20ppm max, tight bubble, striae and inclusion control, excellent batch consistency, well-balanced overall performance
- Core positioning: Mainstream choice for mid-to-high end semiconductor processes, precision optics and general high-end applications, with strong cost-effectiveness
2. HSQ330: Ultra High-Purity Semiconductor Grade
HSQ330 is the ultra-high purity upgrade of HSQ300, with further tightened impurity and defect controls, targeting more advanced semiconductor process nodes.
- Key features: Lower alkali metal and heavy metal content, stricter internal defect control, higher cleanliness level, lower particle emission risk during long-term high-temperature use
- Core positioning: 12nm-class and above advanced semiconductor processes, high-cleanliness etch / diffusion processes, and precision scenarios with zero-tolerance for impurities
3. HSQ330S: Low-OH Ultra High-Purity Upgrade
HSQ330S is the low-hydroxyl optimized version of HSQ330. It maintains ultra-high purity while further reducing OH content via deep dehydroxylation, delivering upgraded high-temperature stability.
- Key features: Lower OH content, significantly reduced risk of devitrification, deformation and foaming during long-term operation above 1100℃, with 30%+ longer high-temperature service life than standard HSQ330
- Core positioning: Long-term high-temperature diffusion and oxidation processes, high-temperature optical windows, and scenarios with extreme thermal stability requirements
4. HSQ400: Special Custom Premium Grade
HSQ400 is Heraeus’ custom premium grade optimized for special operating conditions, with targeted performance enhancements for niche advanced scenarios.
- Key features: Directional optimization for specific scenarios (such as deep-UV transmission, high-pressure flexural strength, ultra-low radiation), customized specifications and stricter QC standards
- Core positioning: Specialty R&D, deep-UV optics, high-pressure special equipment, aerospace and other custom advanced scenarios
HSQ Full Series Specification Comparison Table
| Parameter | HSQ300 | HSQ330 | HSQ330S | HSQ400 |
|---|---|---|---|---|
| Positioning | Premium semiconductor workhorse | Ultra high-purity semiconductor | Low-OH ultra high-purity | Special custom advanced grade |
| Total metal impurities | ~20ppm | < 10ppm | < 10ppm | Custom optimized |
| OH content | < 30ppm | < 30ppm | < 5ppm | Custom adjustable |
| Defect control | Premium industrial | Ultra-clean grade | Ultra-clean grade | Custom extreme |
| Long-term temp rating | ≤ 1100℃ | ≤ 1100℃ | ≤ 1150℃ | Application-specific |
| Typical use | General high-end semiconductor, precision optics | Advanced semiconductor, high-cleanliness processes | Long-term high-temp processes, high-temp optics | Specialty R&D, custom advanced equipment |
| Fabrication difficulty | Standard premium | High precision | High precision | Custom process |
View official Heraeus HSQ series product page
Full-Range HSQ Series Fabrication Capabilities
Backed by original Heraeus raw material and multiple precision production lines, we deliver stable finished part fabrication across all HSQ grades, from standard components to custom shapes, from large sizes to micron-level ultra-thin parts.
1. Tubular Products (Including Ultra-Thin Capillaries)
- Range: 0.6mm OD ultra-thin capillaries up to 300mm OD large-diameter tubes, wall thickness as thin as 0.1mm
- Available processes: Precision fixed-length cutting, end face grinding / polishing, flame polishing, chamfering, flaring, necking, flange welding, scale marking
- Flagship product: 0.6mm-class HSQ ultra-thin quartz capillaries with ±0.02mm tolerance, smooth inner wall, chip-free ends, ideal for semiconductor packaging, specialty fiber and precision inspection applications
See more precision grinding processes
2. Plates & Optical Windows
- Range: 0.3mm – 50mm thickness, max size up to 800mm
- Available processes: Precision cutting, double-sided ultra-precision polishing, chip-free chamfering, micron-level drilling, slotting, step processing, coating support
- Precision level: Surface roughness as low as Ra ≤ 0.4μm, parallelism up to 0.005mm, ideal for optical windows, pressure sight glasses and semiconductor substrates
3. Rods & Structural Pillars
- Range: 1mm – 200mm diameter, length up to 2000mm
- Available processes: Fixed-length cutting, end face lapping, polishing, tip forming, drilling, step processing
- Typical products: Semiconductor wafer boat support pillars, high-temperature stirring rods, optical light guide rods, precision locating pins
4. Custom Shaped Precision Components
- Fabricable parts: Quartz boats, cleaning tanks, reactor liners, quartz flanges, instrument parts, custom structural components, assembled assemblies
- Capabilities: CNC precision milling, quartz welding, hot bending, multi-component assembly welding, drawing-based customization and sample replication supported
- QC standard: Full CMM dimensional inspection with tight geometric tolerance control, meeting precision assembly requirements of high-end equipment
4 Key Premium Fabrication Guarantees
1. Authentic Channel Material, Full Traceability
All HSQ series raw material is sourced from official authorized Heraeus channels. Each batch comes with original material certificates, batch numbers and traceability documentation, and supports third-party composition testing. We guarantee no inferior material substitution, protecting finished product performance from the source.
2. In-House Full Process Chain, Stable Precision
All processes from cutting, grinding, polishing to welding, cleaning and packaging are completed in-house, no outsourcing. Equipped with CNC precision cutters, CNC machining centers, ultra-precision polishers and laser diameter gauges, we achieve dimensional accuracy down to ±0.01mm, with chip-free, burr-free end faces, consistently matching the performance level of premium raw materials.
3. Cleanroom Process Control for Semiconductor Standards
Premium component finishing is completed in cleanroom workshops. Finished products go through multi-stage ultrasonic cleaning, dust-free drying and cleanroom packaging, with strict surface particle control, meeting cleanliness requirements for mid-to-high end semiconductor processes and ready for cleanroom use upon delivery.
4. Three-Level QC System, Zero Defect Shipment
We operate a three-level QC process: incoming material verification, in-process sampling inspection, and final full dimensional inspection. Premium grades undergo 100% dimensional, visual and defect inspection, with official inspection reports available, ensuring every finished part lives up to the quality of Heraeus raw material.
Target Industries & Applications
1. Semiconductor Manufacturing
- Diffusion / oxidation furnace tubes, etch chamber components, wafer carrier boats, support pillars
- Packaging & test quartz capillaries, micro-fluid transfer tubes
- High-cleanliness cleaning tanks, quartz cassettes, process support structures
Fit: Low impurities, high cleanliness, batch stability, meeting particle control requirements for advanced process nodes
2. Specialty Fiber & Optical Communications
- Sleeves and capillaries for specialty fiber preforms
- Precision quartz sleeves for fiber couplers and connectors
- Quartz guide and protection components for high-power laser equipment
Fit: Uniform material, excellent optical consistency, more stable device performance
3. Precision Optics & Analytical Instruments
- Pressure sight glasses, optical windows, precision test substrates
- Quartz cells and capillaries for chromatographs and spectrometers
- Deep-UV and IR optical system components
Fit: Low defects, high optical homogeneity, more reliable measurement and imaging accuracy
4. Advanced R&D & Specialty Equipment
- Custom quartz components for university and research institute laboratories
- Quartz components for aerospace and new energy specialty equipment
- Custom parts for high-temperature, high-pressure, highly corrosive conditions
Fit: Complete grade portfolio, flexible customization, matching targeted special operating requirements
Frequently Asked Questions
1. How to choose between HSQ300 and HSQ330?
For general high-end semiconductor and precision optics applications, HSQ300 delivers sufficient performance with better cost-effectiveness. For sub-12nm advanced processes and scenarios with extreme impurity and cleanliness requirements, we recommend HSQ330. For long-term high-temperature service, prioritize HSQ330S low-OH grade.
2. Can you fabricate special grades like HSQ400?
Yes. We support custom fabrication across the full Heraeus product line. For special custom grades like HSQ400, we first evaluate the process plan and material lead time based on your material specifications and fabrication drawings before proceeding.
3. Do you support small-batch sampling? What is the MOQ?
We support small-batch sampling with no mandatory minimum order quantity. R&D prototyping and sample testing orders are all accepted. You can confirm dimensions and performance before placing bulk orders, minimizing your trial cost.
4. What is the typical lead time for custom fabrication?
7–10 days for standard off-the-shelf components; 15–20 days for complex custom parts and special grades. Rush orders can be prioritized via our expedited channel to minimize lead time.
Contact Us for HSQ Quartz Solutions
If you need custom fabrication of Heraeus HSQ300 / HSQ330 / HSQ330S / HSQ400 fused silica components, work with JiuRui Quartz. Authentic channel-sourced material, full-range high-precision fabrication, small-batch sampling available, free selection consultation and process evaluation.
Company: Donghai JiuRui Quartz Products Co., Ltd.
Brand: JiuRui Quartz
WhatsApp (Direct Chat): +86 15189047520
Services: Heraeus HSQ fused silica fabrication, semiconductor quartz components, ultra-thin quartz capillaries, custom precision quartz parts