Description

This clear quartz rod has high purity, elevated temperature characteristics and low coefficient of thermal expansion, It serves as the material of the bridging rod for single and halogen lamps, fiber optic lighting, quartz making, wafer carriers and push rods in semiconductor industry Dimensional Tolerance Range of OD OD ≤6mm ±2.0% 6.****5.*0mm ±1.*5% *5.****0.*0mm ±1.*5% *0.****5.*0mm ±1.*5% *5.****0.*0mm ±1.*5% *0.****0.*0mm ±1.5% Chemical Composition Unit: ppm Cr Ge Fe Mg Ti Ca Al Na Li K OH ï&frac*4;œ0.5 0.5 1.2 0.8 2.0 2.0 *0 1.2 0.5 1.5 ï&frac*4;œ*5 Physical Properties Density *0℃ ******3 (×**3) 2.2 Coefficient of expansion *****0℃ ℃*1 (×***6) 0.*6 Softening point ℃ ***0 Annealing point ℃ ***0 Strain point ℃ ***0 Youngs modulus Pa 7.3×**5 properties: The material is similar to GE**4 , high purity, strong heat resistance and low coefficient of thermal expansion application: It is widely used for filament bridging rod, semiconductor, quartz wielding rod, etc