Machinable Quartz

Electrically fused quartz glass machined parts.

Final Advanced Materials provides a range of quartz glass parts : rods, tubes, boards, machined parts according to your drawings... We can machine quartz part and also a full range of technical machinable ceramics.

The electrical fusion process uses resistance heating to melt highly refined quartz sand into semi finished quartz glass products.

Electrically fused Quartz Glass characteristics

  • High purity level
  • Low bubble content
  • High homogeneity
  • Excellent thermal shock resistance
  • High visible and IR transmission
  • Very good thermal insulation
  • Maximum temperature 1300°C (1100°c continuously)

Fused Quartz Glass applications

  • Furnace tubes
  • Longboats
  • Baffles
  • Laser drilled injectors
  • Spare parts for loading systems
  • TC-sheaths
  • Optical windows
  • Combustion tubes for analyzers
  • Laboratory glassware
  • 3D measurement

Quartz plates dimensions

  • 500 x 500 mm
  • Thickness from 1 to 10 mm
  • Max. plates size 1000 x 800 x 100 mm

Quartz discs dimensions

  • Ø till 500 mm
  • Thickness 1 to 10 mm
  • Max. discs size Ø 1000 x 100 mm

Quartz tubes dimensions

  • Thickness 1 to 10 mm
  • Ø outer from 5 to 300 mm 
  • Wall thickness from 0.6 to 6 mm
  • Max. curvature 3%

Technical data

Properties

Units

Electrically fused quartz

Reference

PPM (mass)

Al=15 - Ca=0.5 - Cu<0.05 - Cr<0.05 - Fe=0.1 - K=0.4 - Li=0,6 - Mg=0.05 - Mn<0.05 - Na=0.3 - Ti=1.1 - Zr=0.7

Mechanical characteristics at 20°C

Density

g/cm3

2.2

Hardness

Mohs

5.5 - 6.5

Elasticity module at 20°C

N/mm²

7.25 x 104

Torsion module

N/mm²

3 x 104

Poisson's ratio

-         

 

0,17

Compressive Strength

N/mm²

1150

Tensile Strength

N/mm²

50

Flexual Strength

N/mm²

67

Torsion Strength

N/mm²

30

Sound propagation speed

m / s

5720

Thermal characteristics

Softening Temperature

°C

1710

Annealing Temperature

°C

1125

Continuous use Temperature

°C

1160

Peak Temperature

°C

1300

Specific Heat

J/kgK (0 - 100 °C)

J/kgK (0 - 500 °C)

J/kgK (0 - 900 °C)

772

964

1052

Thermal Conductivity

W/mK (20°C)

W/mK (100°C)

W/mK (200°C)

W/mK (400°C)

W/mK (950°C)

1.38

1.47

1.55

1.84

2.68

Thermal Expansion

10-7/°K (0-100°C)

10-7/°K (0-600°C)

10-7/°K (0-900°C)

10-7/°K (-50-0°C)

5.1

5.4

4.8

2.7

Electrical characteristics

Dielectric Strength

Ω.cm (20°C)

Ω.cm (400°C)

Ω.cm (800°C)

Ω.cm (1200°C)

1018

1010

6.3 x 106

1.3 x 105

Dielectric Capacity

kV/mm (20°C)

kV/mm (50°C)

25 – 40

4 - 5

Dielectric Loss Angle

tg δ (1 kHz)

tg δ (1 MHz)

tg δ (3x1010 Hz)

5 x 10-4

1 x 10-4

4 x 10-4

Dielectric Constant

ε (0 – 106 Hz)

ε (9x108 Hz)

ε (3x1010 Hz)

3.7

3.77

3.81

Machinable technical ceramics (873.92k)

Machinable technical ceramics data sheet.