Machinable Quartz

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 |