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Formula: SiO₂
Form: Foil/Film/Sheet
Material: Fused Quartz
CAS Number: 14808-60-7
Commodity: Ceramics
Fused Quartz Sheet is a high-purity, amorphous silica-based material known for its exceptional thermal stability, optical clarity, and chemical resistance. Unlike conventional glass, it contains minimal metallic impurities, offering superior transmission in the UV to IR range, making it ideal for optical, photonic, and high-temperature applications. The sheet's low coefficient of thermal expansion and excellent dimensional stability enable precise use in semiconductor processing, laboratory ware, and optical substrates. Research highlights its suitability for use in dynamic transparent soil simulations due to its mechanical similarity to natural soils and well-defined damping behavior under torsional stress. It also demonstrates high shear modulus (~60 MPa at microstrain levels) and minimal deformation under cyclic loads, which is critical in advanced geotechnical model testing and optics-based thermal sensors. The material is typically produced by melting high-purity quartz at ~2000°C, yielding a structure with exceptional resistance to thermal shock, high softening points, and UV-grade transparency.
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Tolerances

Foil/Film/Sheet
Thickness ±20%

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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