JGS1 Fused Silica | UV-Grade Quartz Machining Manufacturer

What Is JGS1 Fused Silica?

JGS1 Fused Silica is a UV-grade optical quartz material characterized by high purity, excellent UV transmittance (185–2500 nm), and superior thermal stability. It is one of the three grades defined by China’s GB/T 31447.1 standard for optical fused silica (JGS1, JGS2, JGS3).

JGS1: UV-grade, best for deep-UV and precision optics.
JGS2: Standard optical grade for visible–IR.
JGS3: IR-grade, ideal for thermal or infrared applications.

Key Properties of JGS1 Quartz

Property	Typical Value	Description
Transmission Range	185–2500 nm	Excellent UV transparency
Purity (SiO₂)	≥ 99.995%	Ultra-low metallic impurities
Bubble / Striae	None visible	High optical uniformity
Thermal Expansion	0.5 × 10⁻⁶ /K	Excellent thermal stability
Max Working Temp	~1100°C	Suitable for high-temperature optical systems

These characteristics make JGS1 Fused Silica ideal for high-precision optical and semiconductor applications.

Typical Applications

Semiconductor process equipment (CVD/PECVD shower plates, wafers, windows)
Semiconductor quartz chucks
Quartz absorption bases
Quartz clamping fixtures, rings, sleeves, etc.
UV laser optics and photolithography lenses
Vacuum chambers and observation windows
High-temperature optical inspection systems

Machining JGS1 Fused Silica at Jundro Ceramics

At Jundro Ceramics, we specialize in precision machining of JGS1 Fused Silica components.
Leveraging advanced 5-axis CNC machining centers and years of experience machining hard and brittle materials, we can produce lightweight JGS1 parts with angled holes, special shapes, and curved surfaces, with tolerances as low as ±0.001mm and roughness as high as Ra0.02.Our engineering team works closely with clients in semiconductor, laser, and optical industries to deliver reliable fused silica parts that meet demanding specifications. We ensure stable supply, fast lead times, and technical support for each project.

✅ In-house material processing and inspection

✅ ISO 9001 / ISO 14001 certified facility

✅ Custom prototypes to small-batch production