Quartz Glass Blog

Introduction UV transmission is one of the most important optical properties of quartz glass. Many common glass materials absorb ultraviolet light, limiting their use in UV-based systems. Quartz glass, however, provides excellent ultraviolet transmission because of its highly stable silica structure and low absorption characteristics. This makes quartz glass widely used in: UV sterilization systems UV lamps Optical instruments Photochemical equipment Semiconductor manufacturing systems When selecting a material [...]

Introduction Chemical resistance is one of the key reasons quartz glass is selected for demanding industrial applications. When materials are exposed to chemicals, they may experience corrosion, surface damage, contamination, or loss of performance. For industries such as semiconductor manufacturing, laboratory research, and chemical processing, material stability is critical. Quartz glass provides excellent chemical durability because of its stable silicon dioxide (SiO₂) structure. This allows quartz components to [...]

Introduction Thermal expansion is one of the most important properties when selecting materials for high-temperature applications. When a material is heated, it expands. When it cools, it contracts. If this dimensional change creates excessive stress, components may deform, crack, or fail during operation. Quartz glass is widely used in demanding applications because it has an extremely low coefficient of thermal expansion compared with most glass materials. This unique [...]

Introduction Quartz glass manufacturing is a specialized process that requires precise control of temperature, material handling, forming methods, and finishing processes. Unlike ordinary glass production, quartz glass processing requires extremely high temperatures because silicon dioxide has a very stable molecular structure. The final performance of a quartz component depends not only on the material itself, but also on how it is formed, machined, polished, and inspected. For industrial [...]

Introduction Quartz glass is one of the most widely used advanced glass materials in high-temperature, optical, semiconductor, and laboratory applications. Unlike ordinary glass, quartz glass is mainly composed of silicon dioxide (SiO₂), giving it unique properties such as extremely low thermal expansion, excellent temperature resistance, high optical transmission, and outstanding chemical stability. These characteristics make quartz glass suitable for demanding applications where conventional glass materials cannot provide sufficient [...]

Introduction Fused quartz and fused silica are two terms that are often used interchangeably in the quartz glass industry. Because both materials are mainly composed of silicon dioxide (SiO₂), many engineers and buyers assume they are exactly the same material. In most industrial applications, the difference is not the chemical composition but the manufacturing method, raw material source, and industry terminology. Both materials offer excellent thermal stability, chemical [...]

Introduction Quartz glass and borosilicate glass are two widely used glass materials in laboratories, industrial equipment, optical systems, and high-temperature applications. Although both materials offer excellent chemical resistance and thermal stability compared with ordinary glass, their properties are significantly different. The main difference is that quartz glass is made from high-purity silicon dioxide (SiO₂), while borosilicate glass contains significant amounts of boron oxide (B₂O₃) and other components. This [...]

Introduction Large diameter quartz tubes are widely used in semiconductor furnaces, solar PV equipment, laboratory furnaces, and high-temperature industrial systems due to their excellent thermal stability, chemical resistance, and low contamination characteristics. FGQuartz manufactures custom fused quartz tubes with diameters from 5 mm to 1000 mm, supporting different wall thicknesses, lengths, surface finishes, and machining requirements according to customer drawings. Large quartz tubes are commonly used as furnace [...]

Modern laboratories demand materials that can perform reliably under some of the most demanding scientific conditions. Whether researchers are analyzing trace elements, developing new pharmaceutical compounds, testing advanced materials, or operating high-temperature furnaces, the quality of laboratory equipment directly influences the accuracy and repeatability of experimental results. Among the many engineering materials available today, quartz glass has earned a unique position. It is found in research laboratories, university [...]

Quick Answer A quartz tank is a fabricated fused silica vessel used where process media—hot acid, alkaline etch, plating solution, high-purity reagent—demands thermal stability, chemical inertness and low extractables that metal and fluoropolymer cannot both deliver. FGQuartz builds quartz tanks to customer drawing: rectangular or cylindrical body, welded flange rim, bottom drain or side port, optional heating jacket, sight window and agitator port, then fire-polished on all wetted [...]

Quick Answer A semiconductor diffusion furnace typically runs on four fused silica components: the process tube​ (sometimes with a nested liner), the boat​ that carries wafers, the paddle​ that pushes the boat in and out, and a set of supporting pieces​ — spacers, end caps, dummy wafers, gas distribution nozzles. All are high-purity fused silica, but they solve different problems. The tube owns the process envelope. The boat [...]

Quick Answer FGQuartz manufactures custom quartz glass and fused silica parts to customer drawing when standard tubes, rods and plates will not fit the process. In-house capabilities span cold working (CNC turning, milling, drilling, optical grinding) and hot working (flame forming, welding, bending, fire polishing), which lets a single part move from raw material to finished assembly without leaving the facility. Complex geometries—multi-port reactors, flanged tubes, angled bores, [...]

Introduction The quartz wafer boat is one of the most critical consumables in high-temperature semiconductor processing. It positions and supports wafers through diffusion, oxidation, deposition and annealing steps, and its design directly determines batch uniformity, wafer yield and equipment throughput. Many engineering and procurement teams select boats based on wafer count alone, overlooking how slot geometry, frame structure and dimensional fit shape process performance. This guide breaks down [...]

Introduction Quartz beakers represent a high-performance container solution for demanding laboratory and industrial processes, manufactured from high-purity fused silica glass. In scenarios involving extreme temperatures, corrosive reagents or strict contamination control, standard lab glass containers fail to meet requirements, leading to process failure, sample contamination or unexpected downtime. Engineers, purchasing managers and technical directors face the recurring challenge of selecting container materials that balance performance, durability and total [...]

Introduction Quartz glassware represents the pinnacle of material performance for demanding industrial and laboratory environments. Unlike conventional glass types, fused silica components deliver exceptional thermal stability, chemical purity, and optical transmission that make them irreplaceable in semiconductor manufacturing, high-temperature processing, UV spectroscopy, and precision optics. Engineers, purchasing managers, and technical directors face a critical challenge: selecting the right glassware material that balances performance requirements, operational longevity, and total [...]

Introduction In high-purity manufacturing environments—particularly semiconductor wet processing, pharmaceutical production, and specialty chemical handling—contamination control is non-negotiable. Even trace levels of metallic ions leaching into process chemistry can compromise product quality or cause costly production failures. The quartz heater chamber is the critical wetted component that makes contamination-free fluid heating possible. A quartz inline heater chamber is a high-purity flow-through fused quartz component that forms the core wetted [...]

Introduction Quartz glass, widely referenced as fused silica across global industrial contexts, is a high-performance engineering material that enables critical processes in semiconductor manufacturing, UV disinfection, high-temperature furnace operations, and precision optics. Unlike conventional glass formulations that rely on mixed raw materials and fluxing additives, quartz glass is derived almost exclusively from silica feedstock, processed at extreme temperatures to deliver a unique combination of thermal, optical, and chemical [...]

Introduction Quartz wafer carriers are critical components used in semiconductor and solar manufacturing equipment to hold and transport wafers during high-temperature processes. Designed for diffusion furnaces, oxidation systems, LPCVD, PECVD and photovoltaic processing equipment, quartz wafer carriers provide stable wafer positioning while maintaining thermal performance, chemical resistance and contamination control. Unlike conventional glass materials, fused quartz offers excellent thermal stability, low thermal expansion and high resistance to process [...]

Introduction A quartz crucible is the single most consumed precision component in monocrystalline silicon production, and also one of the least understood by procurement teams outside the crystal-growing process itself. It is not a permanent fixture like a furnace or a pulling mechanism — it is a high-purity, single-use vessel that dissolves, deforms, and is discarded after one growth run, then must be replaced again for the next. [...]

Quick answer: JGS1, JGS2, and JGS3 are the three standard grades of optical fused silica defined under China's GB/T 18371 standard. The difference comes down to how each is made and how much hydroxyl (OH) and metallic impurity it carries — which in turn decides what wavelengths it transmits. Choose JGS1 for deep-UV work (down to ~185 nm), JGS2 for general UV–visible optics at a lower price, and [...]