Electric Fused Opaque Quartz

  

  Introduction



Electric fused opaque quartz glass has low transmission, high heat reflectivity, which can effectively reduce heat loss and can extend the lifespan of heating parts. The material can be welded, fire-polished, and high-precision optical polished, featuring high density, excellent machining finish, good surface finish after firing, and longer service life. Suitable for semiconductor heat treatment processes.

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  Physical Property

Density(g/cm³ )

Porosity

Pore size

Expansion coefficient( 0-900℃)10-6-1

SSpecific Heat(20℃)

Max. working temperature-continuous℃

Max. working temperature-short term ℃

Dielectric loss (room temperature)

Thermal Conductivity(20℃)

2.18~2.19

<0.5%

<10 μm

0.45

0.75

1100

1300

2×10-4

1.39


  

  Chemical purity

Impurity Typical Value         (ppm)



Al

12.29

Ca

1.05

Mg

0.03

Cu

0.0

Fe

0.53

Ni

0.01

Mn

0.00

Li

0.30

K

0.47

Na

0.98

Zr

1.64

Ti

1.42

B

0.00

Co

0.00

sum

18.72

  

  Optical Properties

Transmission(400-2000nm)

 Reflectivity(400-2200nm)

>0.5% 

>60% 

2024-9-19 白乐动全站·(中国)官方网站曲线1.jpg

     Fig. a Transmittance of FSTQZ®W

2024-9-19 白乐动全站·(中国)官方网站曲线2.jpg

      Fig.b Reflectivity of FSTQZ®W





  Electric Fused Opaque Quartz
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