Quartz (SiO2)

Quartz (SiO2)

Quartz, as a material, due to its unique properties, has proven itself as the main material for manufacturing:

  • quartz reactors,
  • quartz crucibles for monocrystalline silicon,
  • quartz viewing or protective windows, tubes,
  • quartz boats, filters and other products.
GN electronics has the ability to manufacture quartz products according to your drawings and/or technical specifications, both with and without metallization. Quartz products can be used for final products intended for ultraviolet disinfection, deposition of thin films, lithography in ultraviolet radiation, production of photomasks, manufacture of fiber optics products, for LEDs, etc.


Specifications

Ceramic Quаrtz

Properties

Condition

Value

Unit

SiO2

Density

 

g/cм3

≥ 1,85-2,0

Bending strength

 

МPа

>25

Compressive strength

 

МPа

50-120

Porosity

 

%

<5-15

Coefficient of thermal expansion

100-1000 °C

10-6 /°C

<0,6

Thermal conductivity

20C

W/м∙K

0,66

Max.working temperature

 

°C

1650


Glass Quartz

Properties

Conditions

Value

Unit

SiO2

Color         transparent, colorless

Density

 

g/см3

2,2

Flexural strength

 

МPа

67

Compressive strength

 

МPа

1100

Poisson's ration

 


0,14-0,17

Young's modulus  

МPа

 72000

Modulus hardness

   МPа  31000

Mohs hardness

     5,5-6,5

Transformation point

   С  1280

Softening point

   С  1780

Low thermal expansion coefficient

100-1000 °C

10-6 /°C

<0,55

Thermal conductivity

20C

W/м∙K

1,4

Short-term use temperature

 

°C

1300

Long-term use temperature

  °C
1100

Min thickness 

   мм  2

Max thickness

   мм  20

Dielectric constant glass quartz 

Properties

0-10⁶ Hz

3×1010 Hz

Clear

3,70 

3,81

Not Clear

3,50

3,62



Dielectric loss tangent glass quartz

Properties

1 GHz

1 МHz

10⁷ Hz  10⁸ Hz  10⁹ Hz 3×1010 Hz

Clear

5*10-4

<1*10-4

 <1*10-4  <1*10-4  <1*10-4  <4*10-4

Not clear

(6-20)*10-4

(5-15)*10-4

(4-12)*10-4  (4-12)*10-4 (4-12)*10-4  -


Application area

  • quartz reactors,
  • windows,
  • shelves,
  • boats,
  • crucibles,
  • chambers, etc.

See also