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Formula: SiO₂
Form: Filament
Material: Quartz - Fused
CAS Number: 14808-60-7
Commodity: Ceramics
Diameter: 0.1mm
A Quartz - Fused Filament is a type of filament offered by Goodfellow within its range of engineered materials. Made of fused quartz, it exhibits high purity, thermal stability, and durability. With Goodfellow providing over 5 variations, Quartz - Fused Filament's can be customized for applications like fiber optics, semiconductor manufacturing, and laboratory equipment. Its unique properties allow it to withstand ultra-high temperatures while resisting chemical corrosion.
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Tolerances

Filament
Diameter ±20%
Length +5% / -1%

Material Properties for Ceramics

Chemical Resistance
Element Value
Acids - concentrated Good
Acids - dilute Good
Alkalis Fair
Halogens Good
Metals Fair
Electrical Properties
Element Value
Dielectric constant 3.8
Dielectric strength( kV mm⁻¹ ) 25-40
Volume resistivity( Ohmcm ) 10¹⁸@25
Physical Properties
Element Value
Refractive index 1.46
Useful optical transmission range 180-2500nm
Apparent porosity( % ) 0
Water absorption - saturation( % ) 0
Density( gcm⁻³ ) 2.2
Thermal Properties
Element Value
Melting point( C ) 1715
Upper continuous use temperature( C ) 1100-1400
Specific heat( J K⁻¹ kg⁻¹ ) 670-740@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 1.46@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 0.54@20-1000
Mechanical Properties
Element Value
Tensile modulus( GPa ) 72-74
Hardness - Knoop( kgf mm⁻² ) 820
Hardness - Vickers( kgf mm⁻² ) 1000
Shear strength( MPa ) 70
Tensile strength( MPa ) 48
Pultrusions
Element Value
Compressive strength( MPa ) 1100

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