What temperature can your fused quartz products withstand?

Typical clear fused quartz can be used continuously at around 1100 °C and for short periods up to about 1450 °C. The softening point is approximately 1683 °C. Exact limits depend on wall thickness, thermal cycling and atmosphere, so we confirm suitability for each application.

Can you manufacture custom quartz parts from my drawings?

Yes. We provide OEM and ODM manufacturing of quartz tubes, plates, discs, flanges, boats, crucibles, bell jars, cuvettes and custom labware. Send a PDF, DWG or STEP drawing with grade, tolerance, surface finish and quantity requirements to info@nivraquartz.com.

What is the minimum order quantity?

Many standard items start from 1 to 10 pieces, while small precision wafers and discs typically start from 50 to 100 pieces. Low-volume prototypes and sample orders are welcome before mass production.

How do you pack fragile quartz glass for international shipping?

Each part is cleaned, individually wrapped and fixed in shock-absorbing foam inside export cartons or fumigation-free wooden cases. Long tubes and rods are shipped in reinforced crates to prevent bending stress and breakage.

How quickly will I get a reply to my technical inquiry?

Our average response time is within 5 hours, with a measured response rate of 88.89%. Engineering questions on drawings and tolerances are answered by staff experienced in quartz processing.

CE Certified Optical Sapphire Substrate Supplier & Exporter

Q: What is the difference between JGS1, JGS2 and JGS3 fused quartz?

JGS1 is synthetic fused silica optimized for deep-UV transmission from about 185 nm and is used for UV optics and lasers. JGS2 is a fused quartz grade for UV-visible use from about 220 nm, common in windows, sight glasses and lamp covers. JGS3 is an IR-grade fused quartz with low hydroxyl content, transmitting up to about 3500 nm, used for infrared windows and thermal applications.

High-Purity Monocrystalline Sapphire (Al₂O₃) Wafers, Optical Windows & Custom Fused Quartz Solutions for Next-Gen Semiconductor, Photonics & High-Temperature Applications

Industry Technical Whitepaper

Optical Sapphire Substrates & Fused Quartz Material Science

Engineering guide to monocrystalline sapphire (Al₂O₃) crystal orientations, synthetic fused silica optical properties, chemical vapor deposition (CVD) compatibility, and structural thermal durability in microelectronics.

Information Gain Insight: Selecting between single-crystal sapphire (Al₂O₃) and high-purity synthetic fused quartz (SiO₂) depends heavily on working temperature gradients, dielectric constant requirements, and operational spectral bands. Sapphire offers extreme scratch resistance (Mohs 9) and thermal conductivities up to 40 W/(m·K) at room temperature, while synthetic fused silica provides exceptionally low thermal expansion ($5.5 \times 10^{-7} /^\circ\text{C}$) and superior UV spectrum transmission starting at 185 nm.

In high-stakes semiconductor manufacturing, optoelectronic packaging, and high-energy laser optical trains, optical substrate integrity dictates long-term yield and thermal stability. As a premier CE Certified Optical Sapphire Substrate Supplier & Exporter operating out of Donghai County, Jiangsu (China’s primary crystal and high-purity quartz industrial node), Donghai County Nivra Quartz Products Co., Ltd. delivers precision-engineered sapphire wafers and fused silica optics built strictly to international OEM/ODM tolerance standards.

99.999%

Ultra-High Purity Al₂O₃ / SiO₂

Mohs 9

Sapphire Surface Hardness

< 0.2 nm

Atomic Roughness (Ra)

1700°C

Max Thermal Tolerance

Single Crystal Sapphire (Al₂O₃) Orientation Guide

Monocrystalline sapphire is anisotropic, meaning its electrical, optical, and mechanical properties vary according to its crystallographic lattice plane. Understanding crystallographic orientation is vital for epitaxy, optical windows, and pressure viewports:

C-Plane Sapphire (0001)

The primary substrate orientation for III-V nitride thin films. C-plane sapphire is widely utilized for GaN (Gallium Nitride) LED growth, blue-violet laser diodes, and high-frequency RF micro-devices due to minimal lattice mismatch with GaN epitaxial layers.

R-Plane Sapphire (1012)

Favored in Silicon-on-Sapphire (SOS) microelectronic circuits and hetero-epitaxial growth. R-plane substrates allow seamless deposition of single-crystal silicon layers, enabling radiation-hardened microprocessors and ultra-fast CMOS RF switches.

A-Plane Sapphire (1120)

Provides uniform dielectric properties and high mechanical strength perpendicular to the C-axis. Ideal for optical windows, high-temperature sight glass windows, and substrates requiring uniform non-birefringent optical paths.

Comprehensive Material Property Comparison: Sapphire vs. Fused Silica Grades

To streamline material procurement for international R&D engineering teams, the following cross-reference table contrasts monocrystalline optical sapphire against our standard high-purity fused quartz grades (JGS1, JGS2, JGS3).

Material / Grade	Crystallinity	Spectral Bandpass	Thermal Expansion	Refractive Index	Max Temp (°C)	Primary Industrial Applications
Optical Sapphire (Al₂O₃)	Single Crystal	170 nm – 5.5 µm	$5.0 - 6.6 \times 10^{-6} /^\circ\text{C}$	1.768 @ 633 nm	2000 °C	GaN Epitaxy, Aerospace Sight Windows, Sensor Cover Glass, Micro-LEDs
JGS1 Synthetic Silica	Amorphous (SiO₂)	185 nm – 2500 nm	$5.5 \times 10^{-7} /^\circ\text{C}$	1.458 @ 589 nm	1100 °C	Deep-UV Laser Optics, Photolithography Masks, UV Cuvettes
JGS2 Fused Quartz	Amorphous (SiO₂)	220 nm – 2500 nm	$5.5 \times 10^{-7} /^\circ\text{C}$	1.458 @ 589 nm	1150 °C	High-Temperature Sight Glasses, Flanges, Standard Optical Windows
JGS3 IR Grade Quartz	Amorphous (Low OH)	260 nm – 3500 nm	$5.5 \times 10^{-7} /^\circ\text{C}$	1.458 @ 589 nm	1200 °C	Infrared Pyrometry, High-Thermal Process Tubes, CO₂ Laser Optics

Global Market Analysis

Future Procurement Trends in Sapphire Substrates & Precision Optics

Strategic foresight into supply chain dynamics, 8-inch/12-inch substrate scaling, Mini/Micro-LED expansion, and environmental compliance requirements shaping buyer procurement through 2030.

1. Large-Diameter Scaling (6" to 8"+ Wafers)

Driven by cost efficiencies in mass LED manufacturing and power electronics, optical substrate procurement is shifting rapidly from standard 2-inch and 4-inch sizes toward 6-inch and 8-inch monocrystalline sapphire wafers. Producing large-diameter sapphire with minimal Total Thickness Variation (TTV < 2 µm) and low internal stress requires advanced Kyropoulos (KY) crystal growth methods and multi-wire diamond sawing.

2. Mini/Micro-LED Display Surge

Next-generation consumer displays, AR/VR headsets, and automotive HUDs rely heavily on Micro-LED technology. Micro-LED fabrication demands double-side chemical-mechanical polished (CMP) C-plane sapphire substrates with near-zero atomic defects and atomic flat surface roughness ($Ra < 0.2\text{ nm}$) to facilitate seamless mass transfer of sub-10 µm LED chips.

3. CE & Sustainability Compliance

Global procurement directors are enforcing strict supply chain audits. Substrate exporters must verify compliance with European CE directives, REACH chemical safety standards, and RoHS environmental directives. Closed-loop diamond slurry recycling and eco-friendly slicing technologies are becoming essential supplier qualification criteria.

Sourcing Strategy Tip: When sourcing optical sapphire substrates for high-temperature plasma chemical vapor deposition (PECVD) or high-energy lasers, always request raw material batch certification detailing dislocation density ($EPD < 500/\text{cm}^2$) and thermal annealing history to prevent unexpected wafer warping or micro-cracking under operational thermal shock.

Cutting-Edge Fabrication

Sapphire Processing & Custom Quartz Fabrication Technology

From raw crystal growth in high-temperature furnaces to ultra-precision CNC grinding, laser dicing, and flame annealing in our Donghai facilities.

Precision Laser Scribing & Dicing

Utilizing picosecond and femtosecond UV laser cutting machinery, we produce ultra-clean sapphire wafer edges and custom geometries with negligible Heat-Affected Zones (HAZ) and zero micro-chipping, ensuring structural integrity during high-rpm spinning processes.

Atomic Chemical Mechanical Planarization (CMP)

Our multi-step CMP polishing lines deliver sub-nanometer surface roughness ($Ra < 0.2\text{ nm}$) on both single-sided (SSP) and double-sided (DSP) polished substrates, meeting stringent optical wave-front distortions ($\lambda/10$ @ 632.8 nm).

Thermal Stress Relief & Annealing

High-temperature vacuum annealing furnaces (up to 1800 °C) eliminate lattice dislocation stresses induced during crystal growth and slicing, ensuring that optical sapphire substrates remain perfectly flat under severe operational heating.

Enterprise Sourcing Advantages

Why Direct Buyers Partner with Donghai County Nivra Quartz

Integrated manufacturing from raw material sourcing to final export inspection in Lianyungang, Jiangsu.

Geographic Hub

Headquartered in Donghai County (285 Heping East Road, Lianyungang), China's crystal capital, giving us direct access to world-class raw silica and synthetic sapphire crystal stocks.

101–200 Expert Workforce

Founded in Feb 2019, our skilled workforce operates advanced CNC glass lathes, double-sided optical polishers, flame welding rigs, and laser inspection instruments.

CE & ISO Quality Control

Verified business status, ISO-compliant dimensional tolerance verification (±0.005 mm), and CE certification ensure total reliability for European and American OEMs.

Global Export Expertise

Serving North America (40%), Western Europe (20%), Eastern Europe (14%), and South America (11.4%) with shockproof, fumigation-free wooden export packaging.

Buyer & Sourcing FAQ

Frequently Asked Questions Regarding Sapphire & Quartz Sourcing

Clear engineering and commercial answers to simplify global procurement decision-making.

What distinguishes CE Certified Optical Sapphire Substrates from standard glass substrates?

CE Certified Optical Sapphire Substrates are monocrystalline single-crystal aluminum oxide ($\text{Al}_2\text{O}_3$), offering extreme surface hardness (Mohs 9), exceptionally broad optical transmittance (170 nm to 5.5 µm), and operational thermal resistance above 1700 °C. Unlike standard borosilicate or soda-lime glass, sapphire resists harsh chemical plasma etchants (HF/gas phase) and exhibits high thermal conductivity, making it ideal for semiconductor substrate processing and high-stress optical viewports. CE certification guarantees strict compliance with European safety, dimensional precision, and material purity directives.

How do I specify crystallographic orientation when ordering sapphire wafers?

When requesting a quote, specify the desired plane: C-plane (0001) for GaN LED/semiconductor growth, R-plane (1012) for Silicon-on-Sapphire (SOS) electronics, or A-plane (1120) for uniform optical windows. Additionally, specify off-cut orientation (e.g., C-plane off-axis by 0.2° to 2.0° toward the M-axis), surface roughness ($Ra$), Total Thickness Variation (TTV), Bow, Warp, and whether Single-Side Polished (SSP) or Double-Side Polished (DSP) finish is required.

What are the standard lead times for custom sapphire substrate and quartz glass orders?

Standard stock items ship within 3 to 7 business days. Custom fabrications requiring dedicated wire dicing, CNC machining, or specialized CMP polishing typically take 2 to 3 weeks following drawing approval. Prototype runs and sample orders are welcomed before full-scale OEM mass production.

What is the difference between JGS1, JGS2, and JGS3 fused silica quartz grades?

JGS1 is synthetic fused silica optimized for deep-UV applications (transmitting down to 185 nm) with zero bubble inclusions. JGS2 is a high-grade fused quartz widely used for visible and near-UV optical windows, sight glasses, and process tubes. JGS3 is an infrared-grade fused silica engineered with extremely low hydroxyl content ($\text{OH} < 5\text{ ppm}$), allowing superior IR transmission up to 3500 nm without OH absorption dips.

How does Donghai County Nivra Quartz prevent transit breakage for international orders?

Fragile quartz tubes, wafers, crucibles, and sapphire substrates undergo ultrasonic cleaning, vacuum sealing in dust-free plastic wrap, and custom embedding into high-density ESD foam shells. Shipments are packed inside reinforced export cartons or fumigation-free wooden crates equipped with drop/tilt indicator labels to guarantee zero breakage during ocean or air transport.

Request Custom Optical Sapphire Substrate & Quartz Quotations

Need precision-polished C-plane/R-plane/A-plane sapphire wafers, JGS1/JGS2/JGS3 optical windows, or custom fused silica labware? Connect with our engineering sales team for rapid quote turnaround within 5 hours.

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