Fused silica is the amorphous modification of quartz. It is manufactured synthetically using an electric arc at approx. 2000°C, and has an extremely low thermal expansion coefficient (0.5*10^-6/K). This characteristic is of decisive importance for specific applications that need to withstand extreme temperature changes. Using a combination of iron-free grinding and optical technologies, Quarzwerke is capable of producing fused silica with particle sizes of 1μm.

Features
• hardness 6.5 (Mohs)
• density 2.2 g/cm³
• chemically inert
• extremely low thermal expansion : 0.5*10^-6 K^-1 (at T 20-300°C)

Key applications
• electrical insulating
• casting resin systems
• electronics
• precision casting
• engineering ceramics 

Index Quarz