Quartz glass machinable ceramic
Final Advanced Materials provides a range of quartz parts : rods, tubes, boards, machined parts according to your drawings... We can machine quartz part and also a full range of technical ceramics.
The electrical fusion process uses resistance heating to melt highly refined quartz sand into semi finished quartz glass products.
Quartz main 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)
Quartz applications
- Furnace tubes for horizontal and vertical furnaces
- Longboats
- Various sorts of carriers
- Baffles
- Laser drilled injectors
- Doorplates
- Pedestals
- Spare parts for loading systems
- TC-sheaths
- Etch and cleaning containers
- Optical windows
- Combustion tubes for analyzers
- Laboratory glassware
- Ceramic products
- Products according to customer specifications
- Cleaning and repair
- 3D measurement
Technical data
|
Properties |
Units |
Quartz (electrically fused) |
|
Composition |
PPM |
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 properties 20 °C |
||
|
Densité (g/cm3) |
g/cm3 |
2.2 |
|
Hardness |
Mohs Knoop (N/mm²) |
5.5 - 6.5 5800 - 6100 |
|
Modulus of Elasticity at 20°C |
N/mm² |
7.25 x 104 |
|
Modulus de rigidity |
N/mm² |
3 x 104 |
|
Poisson's ration |
-
|
0.17 |
|
Compressive Strength |
N/mm² |
1150 |
|
Tensile Strength |
N/mm² |
50 |
|
Flexural Strength |
N/mm² |
67 |
|
Torsion Strength |
N/mm² |
30 |
|
Sound Propagation Speed |
m / s |
5720 |
|
Thermal properties |
||
|
Softening Temperature |
°C |
1710 |
|
Annealing Temperature |
°C |
1125 |
|
Max 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 |
|
Coefficient of 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 properties |
||
|
Dielectric Strength |
Ω.cm (20°C) Ω.cm (400°C) Ω.cm (800°C) Ω.cm (1200°C) |
1018 1010 6.3x106 1.3x105 |
|
Dielectric Capacity |
kV/mm (20°C) kV/mm (50°C) |
25 – 40 4 - 5 |
|
Dielectric Loss |
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 |
Indicative values. The characteristics of the material may vary depending on the part and the process. Contact us for more information's.